<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.chapter01.MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Sup doge"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
package com.example.chapter01;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="vertical"
tools:context="com.example.chapter02.FindBeerActivity"
>
<Spinner
android:id="@+id/color"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:layout_gravity="center"
android:layout_margin="16dp"
android:entries="@array/beer_colors"
/>
<Button
android:id="@+id/find_beer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="16dp"
android:text="@string/find_beer"
android:onClick="onClickFindBeer"
/>
<TextView
android:id="@+id/brands"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="16dp"
android:text="@string/brands"
/>
</LinearLayout>
<resources>
<string name="app_name">Beer Adviser</string>
<string name="find_beer">Find Beer!</string>
<string name="brands">No beers selected</string>
<string-array name="beer_colors">
<item>light</item>
<item>amber</item>
<item>brown</item>
<item>dark</item>
</string-array>
</resources>
package com.example.chapter02;
import java.util.ArrayList;
import java.util.List;
/**
* Created by davidg on 28/04/2017.
*/
public class BeerExpert {
List<String> getBrands(String color) {
List<String> brands = new ArrayList<>();
if (color.equals("amber")) {
brands.add("Jack Amber");
brands.add("Red Moose");
} else {
brands.add("Jail Pale Ale");
brands.add("Gout Stout");
}
return brands;
}
}
package com.example.chapter02;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.List;
public class FindBeerActivity extends Activity {
private BeerExpert expert = new BeerExpert();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_find_beer);
}
//Call when the button gets clicked
public void onClickFindBeer(View view) {
//Get a reference to the TextView
TextView brands = (TextView) findViewById(R.id.brands);
//Get a reference to the Spinner
Spinner color = (Spinner) findViewById(R.id.color);
//Get the selected item in the Spinner
String beerType = String.valueOf(color.getSelectedItem());
//Get recommendations from the BeerExpert class
List<String> brandsList = expert.getBrands(beerType);
StringBuilder brandsFormatted = new StringBuilder();
for (String brand : brandsList) {
brandsFormatted.append(brand).append('\n');
}
//Display the beers
brands.setText(brandsFormatted);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="vertical"
tools:context=".CreateMessageActivity"
>
<EditText
android:id="@+id/message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:hint="@string/hint"
android:ems="10"
/>
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:onClick="onSendMessage"
android:text="@string/send"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="vertical"
tools:context=".ReceiveMessageActivity"
>
<TextView
android:id="@+id/message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
<resources>
<string name="app_name">My Messenger</string>
<string name="send">Send Message</string>
<string name="hint">Enter a message</string>
<string name="chooser">Send message via...</string>
</resources>
package com.example.chapter03;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class CreateMessageActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_message);
}
//Call onSendMessage() when the button is clicked
public void onSendMessage(View view) {
EditText messageView = (EditText)findViewById(R.id.message);
String messageText = messageView.getText().toString();
Intent intent = new Intent(this, ReceiveMessageActivity.class);
// intent.setType("text/plain");
// intent.putExtra(Intent.EXTRA_TEXT, messageText);
// String chooserTitle = getString(R.string.chooser);
// Intent chosenIntent = Intent.createChooser(intent, chooserTitle);
// startActivity(chosenIntent);
intent.putExtra(ReceiveMessageActivity.EXTRA_MESSAGE, messageText);
startActivity(intent);
}
}
package com.example.chapter03;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class ReceiveMessageActivity extends Activity {
public static final String EXTRA_MESSAGE = "message";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_receive_message);
Intent intent = getIntent();
String messageText = intent.getStringExtra(EXTRA_MESSAGE);
TextView messageView = (TextView)findViewById(R.id.message);
messageView.setText(messageText);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="30dp"
tools:context=".MainActivity"
>
<TextView
android:id="@+id/time_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:textAppearance="@android:style/TextAppearance.Large"
android:textSize="56sp"
/>
<Button
android:id="@+id/start_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:onClick="onClickStart"
android:text="@string/start"
/>
<Button
android:id="@+id/stop_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="8dp"
android:onClick="onClickStop"
android:text="@string/stop"
/>
<Button
android:id="@+id/reset_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="8dp"
android:onClick="onClickReset"
android:text="@string/reset"
/>
</LinearLayout>
<resources>
<string name="app_name">Chapter04</string>
<string name="start">Start</string>
<string name="stop">Stop</string>
<string name="reset">Reset</string>
</resources>
package com.example.chapter04;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import java.util.Locale;
public class MainActivity extends AppCompatActivity {
private int seconds = 0;
private boolean running;
private boolean wasRunning;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
seconds = savedInstanceState.getInt("seconds");
running = savedInstanceState.getBoolean("running");
wasRunning = savedInstanceState.getBoolean("wasRunning");
}
runTimer();
}//this gets called before the activity gets destroyed
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putInt("seconds", seconds);
savedInstanceState.putBoolean("running", running);
savedInstanceState.putBoolean("wasRunning", wasRunning);
}
//the timer should resume running.
@Override
protected void onResume() {
super.onResume();
if (wasRunning) {
running = true;
Log.d("onResume:","onResume is called");
}
}
@Override
protected void onPause() {
super.onPause();
wasRunning = running;
running = false;
Log.d("onPause:","onPause is called");
}
//Start the stopwatch running when the Start button is clicked.
public void onClickStart(View view) {
running = true;
}
//Stop the stopwatch running when the Stop button is clicked.
public void onClickStop(View view) {
running = false;
}
//Reset the stopwatch when the Reset button is clicked.
public void onClickReset(View view) {
running = false;
seconds = 0;
}
//Sets the number of seconds on the timer.
private void runTimer() {
final TextView timeView = (TextView)findViewById(R.id.time_view);
final Handler handler = new Handler();
handler.post(new Runnable() {
@Override
public void run() {
int hours = seconds/3600;
int minutes = (seconds%3600)/60;
int secs = seconds%60;
String time = String.format(Locale.getDefault(),
"%d:%02d:%02d", hours, minutes, secs);
timeView.setText(time);
//running default is false
if (running) {
seconds++;
}
handler.postDelayed(this, 1000);
}
});
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".BasicActivity">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="gotoActivity2"
android:text="go to Activity2"
tools:layout_editor_absoluteX="15dp" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".BasicActivity2">
</androidx.constraintlayout.widget.ConstraintLayout>
package com.example.ch4;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(this, "onCreate MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onCreate MainActivity");
}
/*
*onStart() can be called several times during an application’s lifecycle.
* For example, this method can be called when a user opens another activity and then navigates back
* to the previous activity. During the activity’s lifecycle, the onStop() function is called
* This means that some resources are released.
* The onStart() method can be invoked to initialize such resources
* */
@Override
protected void onStart() {
Toast.makeText(this, "onStart MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onStart MainActivity");
super.onStart();
}
/*
Once onStart() is called, onResume() is immediately invoked. Every component associated with
this activity is brought to the foreground state. The activity is now considered interactive.
*/
@Override
protected void onResume() {
Toast.makeText(this, "onResume MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onResume MainActivity");
super.onResume();
}
/*
onPause() is called when the user switches to another activity or a multi-window mode application.
At this point, the activity has lost focus and is running in the background
*/
@Override
protected void onPause() {
Toast.makeText(this, "onPause MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onPause MainActivity");
super.onPause();
}
/*
At this point, most of the activity processes have been stopped.
However, the activity is still running in the background.
*/
@Override
protected void onStop() {
Toast.makeText(this, "onStop MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onStop MainActivity");
super.onStop();
}
/*
Since the activity’s states still exist, the onRestart() method can be called when the user restarts
the activity. This means the activity will go back to the main screen and
the user can resume interacting with its components.
*/
@Override
protected void onRestart() {
Toast.makeText(this, "onRestart MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onRestart MainActivity");
super.onRestart();
}
/*
This is the final callback that the activity will receive when it is stopped.
*/
@Override
protected void onDestroy() {
Toast.makeText(this, "onDestroy MainActivity", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onDestroy MainActivity");
super.onDestroy();
}
public void gotoActivity2(View view) {
Intent intent = new Intent(this, BasicActivity2.class);
startActivity(intent);
}
}
package com.example.ch4;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import android.os.Bundle;
public class SecondActivity extends AppCompatActivity {
private static final String TAG = "Activity2";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
Toast.makeText(this, "onCreate Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onCreate Activity2");
}
@Override
protected void onStart() {
super.onStart();
Toast.makeText(this, "onStart Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onStart Activity2");
}
@Override
protected void onRestart() {
super.onRestart();
Toast.makeText(this, "onRestart Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onRestart Activity2");
}
@Override
protected void onResume() {
super.onResume();
Toast.makeText(this, "onResume Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onResume Activity2");
}
@Override
protected void onPause() {
super.onPause();
Toast.makeText(this, "onPause Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onPause Activity2");
}
@Override
protected void onStop() {
super.onStop();
Toast.makeText(this, "onStop Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onStop Activity2");
}
@Override
protected void onDestroy() {
super.onDestroy();
Toast.makeText(this, "onDestroy Activity2", Toast.LENGTH_SHORT).show();
Log.d(TAG, "onDestroy Activity2");
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:orientation="vertical"
tools:context=".MainActivity"
>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="@string/to"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="top"
android:hint="@string/message"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:text="@string/send"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".MainActivity"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:src="@drawable/duck"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="bottom|end"
android:gravity="end"
android:padding="16dp"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:text="It's a duck!"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:text="(not a real one)"
/>
</LinearLayout>
</FrameLayout>
<resources>
<string name="app_name">Chapter05</string>
<string name="to">To</string>
<string name="message">Message</string>
<string name="send">Send</string>
</resources>
package com.example.chapter05;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//setContentView(R.layout.duck_layout);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".DrinkCategoryActivity"
>
<ListView
android:id="@+id/list_drinks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.hfad.starbuzz.DrinkActivity"
>
<ImageView
android:id="@+id/photo"
android:layout_width="190dp"
android:layout_height="190dp"
/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".TopLevelActivity"
>
<ImageView
android:layout_width="200dp"
android:layout_height="100dp"
android:src="@drawable/starbuzz_logo"
android:contentDescription="@string/starbuzz_logo"
/>
<ListView
android:id="@+id/list_options"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/options"
/>
</LinearLayout>
<resources>
<string name="app_name">Chapter07</string>
<string name="starbuzz_logo">Starbuzz logo</string>
<string-array name="options">
<item>Drinks</item>
<item>Food</item>
<item>Stores</item>
</string-array>
</resources>
package com.example.chapter07;
/**
* Created by davidg on 30/04/2017.
*/
public class Drink {
private String name; private String description; private int imageResourceId;
//drinks is an array of Drinks
public static final Drink[] drinks = {
new Drink("Latte", "A couple of espresso shots with steamed milk", R.drawable.latte),
new Drink("Cappuccino", "Espresso, hot milk, and a steamed milk foam", R.drawable.cappuccino),
new Drink("Filter", "Highest quality beans roasted and brewed fresh", R.drawable.filter)
};
//Each Drink has a name, description, and an image resource
private Drink(String name, String description, int imageResourceId) {
this.name = name;
this.description = description;
this.imageResourceId = imageResourceId;
}
public String getDescription() {
return description;
}
public String getName() {
return name;
}
public int getImageResourceId() {
return imageResourceId;
}
public String toString() {
return this.name;
}
}
package com.example.chapter07;
import androidx.appcompat.app.AppCompatActivity;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import android.os.Bundle;
public class DrinkActivity extends AppCompatActivity {
public static final String EXTRA_DRINKID = "drinkId";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink);
//Get the drink from the intent
int drinkId = (Integer)getIntent().getExtras().get(EXTRA_DRINKID);
Drink drink = Drink.drinks[drinkId];
//Populate the drink name
TextView name = (TextView)findViewById(R.id.name);
name.setText(drink.getName());
//Populate the drink description
TextView description = (TextView)findViewById(R.id.description);
description.setText(drink.getDescription());
//Populate the drink image
ImageView photo = (ImageView)findViewById(R.id.photo);
photo.setImageResource(drink.getImageResourceId());
photo.setContentDescription(drink.getName());
}
}
package com.example.chapter07;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class DrinkCategoryActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink_category);
//The ArrayAdapterDrink.drinks
//android.R.layout.simple_list_item_1 -> displays each item in a the array in a single text
// Drinks.drink -> calls toString() in the Drink class.
ArrayAdapter<Drink> listAdapter = new ArrayAdapter<>(
this, android.R.layout.simple_list_item_1, Drink.drinks);
//get access to the list view using its ID
ListView listDrinks = (ListView) findViewById(R.id.list_drinks);
//use the Adapter that has the data, and link it to the ListView
listDrinks.setAdapter(listAdapter);
//Create the listener
//Interface definition for a callback to be invoked when an item in this AdapterView has been clicked.
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listDrinks,
View itemView,
int position,
long id) {
//Pass the drink the user clicks on to DrinkActivity
Intent intent = new Intent(DrinkCategoryActivity.this,
DrinkActivity.class);
//position is the same as the id.
intent.putExtra(DrinkActivity.EXTRA_DRINKID, (int) id);
startActivity(intent);
}
};
//Assign the listener to the list view
listDrinks.setOnItemClickListener(itemClickListener);
}
}
package com.example.chapter07;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Create an OnItemClickListener
//Interface definition for a callback to be invoked when an item in this AdapterView has been clicked.
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listView,
View itemView,
int position,
long id) {
if (position == 0) {
Intent intent = new Intent(MainActivity.this, DrinkCategoryActivity.class);
startActivity(intent);
}
}
};
//Add the listener to the list view
ListView listView = (ListView) findViewById(R.id.list_options);
listView.setOnItemClickListener(itemClickListener);
}
}
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
>
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
>
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
/>
<com.google.android.material.tabs.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".TopFragment"
>
<!--We’re using a FrameLayout because we want to position the text on top of the image-->
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<ImageView
android:id="@+id/info_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:src="@drawable/restaurant"
android:contentDescription="@string/restaurant_image"
/>
<!--We’re using a LinearLayout to contain the text. We’re giving it a white background, and the margins will add space around the edges-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:padding="16dp"
android:background="#FFFFFF"
android:orientation="vertical"
>
<TextView
android:textSize="32sp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/company_name"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/home_text"
/>
</LinearLayout>
</FrameLayout>
</androidx.core.widget.NestedScrollView>
<resources>
<string name="app_name">Bits and Pizzas</string>
<string name="create_order">Create Order</string>
<string name="create_order_title">Create Order</string>
<string name="action_share">Share</string>
<string name="title_top">Top fragment</string>
<string-array name="pizzas">
<item>Diavolo</item>
<item>Funghi</item>
</string-array>
<string-array name="pasta">
<item>Spaghetti Bolognese</item>
<item>Lasagne</item>
</string-array>
<string-array name="stores">
<item>Cambridge</item>
<item>Sebastopol</item>
</string-array>
<string name="home_tab">Home</string>
<string name="pizza_tab">Pizzas</string>
<string name="pasta_tab">Pasta</string>
<string name="store_tab">Stores</string>
<string name="company_name">Bits and Pizzas</string>
<string name="restaurant_image">Restaurant image</string>
<string name="home_text">Since we opened our doors in 2017, Bits and Pizzas
has built its reputation as one of America’s best Italian-Digital restaurants. Some
people believe eating out is about being with your friends and family. We believe that
good food is best enjoyed while staring at your phone.</string>
<string name="order_name_hint">Please enter your name</string>
<string name="order_details_hint">Please enter your order</string>
<!-- TODO: Remove or change this placeholder text -->
<string name="hello_blank_fragment">Hello blank fragment</string>
</resources>
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
</resources>
package com.example.chapter12;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.ShareActionProvider;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.MenuItemCompat;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;
import androidx.viewpager.widget.ViewPager;
import com.google.android.material.tabs.TabLayout;
public class MainActivity extends AppCompatActivity {
private ShareActionProvider shareActionProvider;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//Attach the SectionsPagerAdapter to the ViewPager
SectionsPagerAdapter pagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
ViewPager pager = (ViewPager) findViewById(R.id.pager);
//Attach the FragmentPagerAdapter to the ViewPager.
pager.setAdapter(pagerAdapter);
//Attach the ViewPager to the TabLayout
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
//This links the ViewPager to the TabLayout.
tabLayout.setupWithViewPager(pager);
}
/* @Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the app bar.
getMenuInflater().inflate(R.menu.menu_main, menu);
MenuItem menuItem = menu.findItem(R.id.action_share);
shareActionProvider =
(ShareActionProvider) MenuItemCompat.getActionProvider(menuItem);
setShareActionIntent("Want to join me for pizza?");
return super.onCreateOptionsMenu(menu);
}*/
private void setShareActionIntent(String text) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, text);
shareActionProvider.setShareIntent(intent);
}
// @Override
// public boolean onOptionsItemSelected(MenuItem item) {
// switch (item.getItemId()) {
//case R.id.action_create_order:
// Intent intent = new Intent(this, OrderActivity.class);
// startActivity(intent);
// return true;
// default:
// return super.onOptionsItemSelected(item);
// }
// }
//The FragmentPagerAdapter passes information to the ViewPager.
private class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
//Say how many pages the ViewPager should contain.
public int getCount() {
return 4;
}
@Override
//Specify which fragment should appear on each page.
public Fragment getItem(int position) {
switch (position) {
case 0:
return new TopFragment();
case 1:
return new PizzaFragment();
case 2:
return new PastaFragment();
case 3:
return new StoresFragment();
}
return null;
}
//This method adds the text to the tabs.
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Home";
case 1:
return getResources().getText(R.string.pizza_tab);
case 2:
return getResources().getText(R.string.pasta_tab);
case 3:
return getResources().getText(R.string.store_tab);
}
return null;
}
}
}
package com.example.chapter12;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import androidx.fragment.app.ListFragment;
/**
* A simple {@link Fragment} subclass.
*/
public class PastaFragment extends ListFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ArrayAdapter<String> adapter = new ArrayAdapter<>(
inflater.getContext(), android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.pasta));
setListAdapter(adapter);
return super.onCreateView(inflater, container, savedInstanceState);
}
}
package com.example.chapter12;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import androidx.fragment.app.ListFragment;
/**
* A simple {@link Fragment} subclass.
*/
public class PizzaFragment extends ListFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ArrayAdapter<String> adapter = new ArrayAdapter<>(
inflater.getContext(), android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.pizzas));
setListAdapter(adapter);
return super.onCreateView(inflater, container, savedInstanceState);
}
}
package com.example.chapter12;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import androidx.fragment.app.ListFragment;
/**
* A simple {@link Fragment} subclass.
*/
public class StoresFragment extends ListFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ArrayAdapter<String> adapter = new ArrayAdapter<>(
inflater.getContext(), android.R.layout.simple_list_item_1,
getResources().getStringArray(R.array.stores));
setListAdapter(adapter);
return super.onCreateView(inflater, container, savedInstanceState);
}
}
package com.example.chapter12;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.fragment.app.Fragment;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link TopFragment.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link TopFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class TopFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_top, container, false);
}
}
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="purple_200">#FFBB86FC</color>
<color name="purple_500">#FF6200EE</color>
<color name="purple_700">#FF3700B3</color>
<color name="teal_200">#FF03DAC5</color>
<color name="teal_700">#FF018786</color>
<color name="black">#FF000000</color>
<color name="white">#FFFFFFFF</color>
<color name="colorPrimary">#3F51B5</color>
<color name="colorPrimaryDark">#303F9F</color>
<color name="colorAccent">#FF4081</color>
</resources>
<resources>
<string name="app_name">Chapter14</string>
<string name="user_name">spot@catchat.com</string>
<string name="nav_inbox">Mesagez</string>
<string name="nav_drafts">Draftz</string>
<string name="nav_sent">Sent mesagez</string>
<string name="nav_trash">In da trash</string>
<string name="nav_support">Support</string>
<string name="nav_help">Halp</string>
<string name="nav_feedback">Giv us feedback</string>
<string name="nav_open_drawer">Open navigation drawer</string>
<string name="nav_close_drawer">Close navigation drawer</string>
<!-- TODO: Remove or change this placeholder text -->
<string name="hello_blank_fragment">Hello blank fragment</string>
<string name="title_activity_help">HelpActivity</string>
<!-- Strings used for fragments for navigation -->
<string name="first_fragment_label">First Fragment</string>
<string name="second_fragment_label">Second Fragment</string>
<string name="next">Next</string>
<string name="previous">Previous</string>
<string name="hello_first_fragment">Hello first fragment</string>
<string name="hello_second_fragment">Hello second fragment. Arg: %1$s</string>
<string name="title_activity_feedback">FeedbackActivity</string>
</resources>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".FeedbackActivity"
>
<include
layout="@layout/toolbar_main"
android:id="@+id/toolbar"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Feedback"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".HelpActivity"
>
<include
layout="@layout/toolbar_main"
android:id="@+id/toolbar"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Help"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<!-- The layout's root element is a DrawerLayout -->
<androidx.drawerlayout.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- This is for the drawer’s main content. -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- The activity’s main content is composed of a Toolbar, and a FrameLayout in which we’ll display fragments. -->
<include
layout="@layout/toolbar_main"
android:id="@+id/toolbar"
/>
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
<!-- The NavigationView defines the drawer’s appearance and much of its behavior. We’re giving it an ID, as we’ll need to refer to it in our activity code -->
<!-- We’re using the layout we created earlier as the drawer’s header, and the menu resource file for the list of options -->
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/nav_header"
app:menu="@menu/menu_nav"/>
</androidx.drawerlayout.widget.DrawerLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DraftsFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="@string/hello_blank_fragment" />
</FrameLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".InboxFragment"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Inbox"
/>
</LinearLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".SentItemsFragment"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Sent items"
/>
</LinearLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".TrashFragment"
>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Trash"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="180dp"
android:theme="@style/ThemeOverlay.AppCompat.Dark"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:src="@drawable/kitten_small"
/>
<!-- This LinearLayout will appear on top of the ImageView. We're using it to display text at the bottom of the image.-->
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="bottom|start"
android:layout_margin="16dp">
<!-- This is a built-in style that makes the text look slightly bolder. It comes from the AppCompat Support Library -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/app_name"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/user_name"
/>
</LinearLayout>
</FrameLayout>
<?xml version="1.0" encoding="utf-8"?>
<androidx.appcompat.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<?xml version="1.0" encoding="utf-8"?>
<!--Add this group and the four items it contains to your menu resource file so they'll appear in the navigation drawer -->
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<!-- This means that a single item in the group will be highlighted (the option the user selects) -->
<group android:checkableBehavior="single">
<!-- the first group contains message, draft, sent, and trash -->
<!-- Checked = True, highlights the item in the navigation drawer by default -->
<!-- This is a built-in drawable you can use to display an email icon -->
<item
android:id="@+id/nav_inbox"
android:icon="@android:drawable/sym_action_email"
android:title="@string/nav_inbox"
android:checked="true"
/>
<item
android:id="@+id/nav_drafts"
android:icon="@android:drawable/ic_menu_edit"
android:title="@string/nav_drafts"
/>
<item
android:id="@+id/nav_sent"
android:icon="@android:drawable/ic_menu_send"
android:title="@string/nav_sent"
/>
<item
android:id="@+id/nav_trash"
android:icon="@android:drawable/ic_menu_delete"
android:title="@string/nav_trash"
/>
</group>
<item android:title="@string/nav_support">
<menu>
<!-- the second group contains help and feedback -->
<item
android:id="@+id/nav_help"
android:icon="@android:drawable/ic_menu_help"
android:title="@string/nav_help"
/>
<item
android:id="@+id/nav_feedback"
android:icon="@android:drawable/sym_action_email"
android:title="@string/nav_feedback"
/>
</menu>
</item>
</menu>
package com.example.chapter14;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class DraftsFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_drafts, container, false);
}
}
package com.example.chapter14;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.os.Bundle;
public class FeedbackActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_feedback);
//5. Set the toolbar as the activity's app bar, page 313
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
}
package com.example.chapter14;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import android.os.Bundle;
public class HelpActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_help);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
}
package com.example.chapter14;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class InboxFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_inbox, container, false);
}
}
package com.example.chapter14;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.view.MenuItem;
import com.google.android.material.navigation.NavigationView;
//Implementing this interface means the activity can listen for clicks
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private DrawerLayout drawer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
// Add a drawer toggle with the burger icon
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this,
drawer,
toolbar,
R.string.nav_open_drawer,
R.string.nav_close_drawer);
drawer.addDrawerListener(toggle);
toggle.syncState();
//Register the activity with the navigation view as a listener.
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
Fragment fragment = new InboxFragment();
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
//We are replacing the content_frame from the activity_main.xml to the default fragment (i.e., inbox).
ft.add(R.id.content_frame, fragment);
ft.commit();
}
//This method gets called when the user clicks on one of the items in the drawer
@Override
public boolean onNavigationItemSelected(MenuItem item) {
int id = item.getItemId();
Fragment fragment = null;
Intent intent = null;
switch(id) {
case R.id.nav_drafts:
fragment = new DraftsFragment();
break;
case R.id.nav_sent:
fragment = new SentItemsFragment();
break;
case R.id.nav_trash:
fragment = new TrashFragment();
break;
case R.id.nav_help:
intent = new Intent(this, HelpActivity.class);
break;
case R.id.nav_feedback:
intent = new Intent(this, FeedbackActivity.class);
break;
default:
fragment = new InboxFragment();
}
if (fragment != null) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
//We are replacing the content_frame from the activity_main.xml to the clicked fragment
ft.replace(R.id.content_frame, fragment);
ft.commit();
} else {
startActivity(intent);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
//This gets called when the Back button gets pressed
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
//If the drawer is currently open, close it.
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
//Otherwise, call up to the superclass onBackPressed() method
super.onBackPressed();
}
}
}
package com.example.chapter14;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class SentItemsFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_sent_items, container, false);
}
}
package com.example.chapter14;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class TrashFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_trash, container, false);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="@+id/list_drinks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:id="@+id/photo"
android:layout_width="190dp"
android:layout_height="190dp"
/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:layout_width="200dp"
android:layout_height="100dp"
android:src="@drawable/starbuzz_logo"
android:contentDescription="@string/starbuzz_logo"
/>
<ListView
android:id="@+id/list_options"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/options"
/>
</LinearLayout>
<resources>
<string name="app_name">Chapter15</string>
<string name="starbuzz_logo">Starbuzz logo</string>
<string-array name="options">
<item>Drinks</item>
<item>Food</item>
<item>Stores</item>
</string-array>
</resources>
package com.example.chapter15;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class drink_category extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink_category);
ArrayAdapter<Drink> listAdapter = new ArrayAdapter<>(
this, android.R.layout.simple_list_item_1, Drink.drinks);
ListView listDrinks = (ListView) findViewById(R.id.list_drinks);
listDrinks.setAdapter(listAdapter);
//Create the listener
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listDrinks,
View itemView,
int position,
long id) {
//Pass the drink the user clicks on to DrinkActivity
Intent intent = new Intent(drink_category.this,
DrinkActivity.class);
intent.putExtra(DrinkActivity.EXTRA_DRINKID, (int) id);
startActivity(intent);
}
};
//Assign the listener to the list view
listDrinks.setOnItemClickListener(itemClickListener);
}
}
package com.example.chapter15;
/**
* Created by davidg on 30/04/2017.
*/
public class Drink {
private String name; private String description; private int imageResourceId;
//drinks is an array of Drinks
public static final com.example.chapter15.Drink[] drinks = {
new com.example.chapter15.Drink("Latte", "A couple of espresso shots with steamed milk", R.drawable.latte),
new com.example.chapter15.Drink("Cappuccino", "Espresso, hot milk, and a steamed milk foam", R.drawable.cappuccino),
new com.example.chapter15.Drink("Filter", "Highest quality beans roasted and brewed fresh", R.drawable.filter)
};
//Each Drink has a name, description, and an image resource
private Drink(String name, String description, int imageResourceId) {
this.name = name;
this.description = description;
this.imageResourceId = imageResourceId;
}
public String getDescription() {
return description;
}
public String getName() {
return name;
}
public int getImageResourceId() {
return imageResourceId;
}
public String toString() {
return this.name;
}
}
package com.example.chapter15;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
public class DrinkActivity extends AppCompatActivity {
public static final String EXTRA_DRINKID = "drinkId";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink);
//Get the drink from the intent
int drinkId = (Integer)getIntent().getExtras().get(EXTRA_DRINKID);
Drink drink = Drink.drinks[drinkId];
//Populate the drink name
TextView name = (TextView)findViewById(R.id.name);
name.setText(drink.getName());
//Populate the drink description
TextView description = (TextView)findViewById(R.id.description);
description.setText(drink.getDescription());
//Populate the drink image
ImageView photo = (ImageView)findViewById(R.id.photo);
photo.setImageResource(drink.getImageResourceId());
photo.setContentDescription(drink.getName());
}
}
package com.example.chapter15;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Create an OnItemClickListener
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listView,
View itemView,
int position,
long id) {
if (position == 0) {
Intent intent = new Intent(MainActivity.this,
drink_category.class);
startActivity(intent);
}
}
};
//Add the listener to the list view
ListView listView = (ListView) findViewById(R.id.list_options);
listView.setOnItemClickListener(itemClickListener);
}
}
package com.example.chapter15;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class StarbuzzDatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "starbuzz"; // the name of our database
private static final int DB_VERSION = 2; // the version of the database
StarbuzzDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
updateMyDatabase(db, 0, DB_VERSION);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
updateMyDatabase(db, oldVersion, newVersion);
}
private static void insertDrink(SQLiteDatabase db, String name, String description,
int resourceId) {
ContentValues drinkValues = new ContentValues();
drinkValues.put("NAME", name);
drinkValues.put("DESCRIPTION", description);
drinkValues.put("IMAGE_RESOURCE_ID", resourceId);
//DrinkValues ("NAME": Latte, "DESCRIPTION": Espresso, "IMAGE_RESOURCE_ID": 53556)
db.insert("DRINK", null, drinkValues);
}
private void updateMyDatabase(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion < 1) {
//Just to create our table in the database
db.execSQL("CREATE TABLE DRINK (_id INTEGER PRIMARY KEY AUTOINCREMENT, "
+ "NAME TEXT, "
+ "DESCRIPTION TEXT, "
+ "IMAGE_RESOURCE_ID INTEGER);");
//
insertDrink(db, "Latte", "Espresso and steamed milk", R.drawable.latte);
insertDrink(db, "Cappuccino", "Espresso, hot milk and steamed-milk foam",
R.drawable.cappuccino);
insertDrink(db, "Filter", "Our best drip coffee", R.drawable.filter);
}
if (oldVersion < 2) {
db.execSQL("ALTER TABLE DRINK ADD COLUMN FAVORITE NUMERIC;");
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="@+id/list_drinks"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:id="@+id/photo"
android:layout_width="190dp"
android:layout_height="190dp"
/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<CheckBox
android:id="@+id/favorite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/favorite"
android:onClick="onFavoriteClicked"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:layout_width="200dp"
android:layout_height="100dp"
android:src="@drawable/starbuzz_logo"
android:contentDescription="@string/starbuzz_logo"
/>
<ListView
android:id="@+id/list_options"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/options"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/favorites"
/>
<ListView
android:id="@+id/list_favorites"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
<resources>
<string name="app_name">Chapter15</string>
<string name="starbuzz_logo">Starbuzz logo</string>
<string name="favorite">Favorite</string>
<string name="favorites">Your favorite drinks:</string>
<string-array name="options">
<item>Drinks</item>
<item>Food</item>
<item>Stores</item>
</string-array>
</resources>
package com.example.chapter15;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
public class drink_category extends Activity {
private SQLiteDatabase db;
private Cursor cursor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink_category);
SQLiteOpenHelper starbuzzDatabaseHelper = new StarbuzzDatabaseHelper(this);
ListView listDrinks = (ListView) findViewById(R.id.list_drinks);
try {
db = starbuzzDatabaseHelper.getReadableDatabase();
cursor = db.query("DRINK",
new String[]{"_id", "NAME"},
null, null, null, null, null);
SimpleCursorAdapter listAdapter = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1,
cursor,
new String[]{"NAME"},
new int[]{android.R.id.text1},
0);
listDrinks.setAdapter(listAdapter);
} catch(SQLiteException e) {
Toast toast = Toast.makeText(this, "Database unavailable", Toast.LENGTH_SHORT);
toast.show();
}
//Create the listener
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listDrinks,
View itemView,
int position,
long id) {
//Pass the drink the user clicks on to DrinkActivity
Intent intent = new Intent(drink_category.this,
DrinkActivity.class);
intent.putExtra(DrinkActivity.EXTRA_DRINKID, (int) id);
startActivity(intent);
}
};
//Assign the listener to the list view
listDrinks.setOnItemClickListener(itemClickListener);
}
@Override
public void onDestroy(){
super.onDestroy();
cursor.close();
db.close();
}
}
package com.example.chapter15;
/**
* Created by davidg on 30/04/2017.
*/
public class Drink {
private String name; private String description; private int imageResourceId;
//drinks is an array of Drinks
public static final com.example.chapter15.Drink[] drinks = {
new com.example.chapter15.Drink("Latte", "A couple of espresso shots with steamed milk", R.drawable.latte),
new com.example.chapter15.Drink("Cappuccino", "Espresso, hot milk, and a steamed milk foam", R.drawable.cappuccino),
new com.example.chapter15.Drink("Filter", "Highest quality beans roasted and brewed fresh", R.drawable.filter)
};
//Each Drink has a name, description, and an image resource
private Drink(String name, String description, int imageResourceId) {
this.name = name;
this.description = description;
this.imageResourceId = imageResourceId;
}
public String getDescription() {
return description;
}
public String getName() {
return name;
}
public int getImageResourceId() {
return imageResourceId;
}
public String toString() {
return this.name;
}
}
package com.example.chapter15;
import android.app.Activity;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
public class DrinkActivity extends Activity {
public static final String EXTRA_DRINKID = "drinkId";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drink);
//Get the drink from the intent
int drinkId = (Integer)getIntent().getExtras().get(EXTRA_DRINKID);
//Create a cursor
SQLiteOpenHelper starbuzzDatabaseHelper = new StarbuzzDatabaseHelper(this);
try {
SQLiteDatabase db = starbuzzDatabaseHelper.getReadableDatabase();
Cursor cursor = db.query ("DRINK",
new String[] {"NAME", "DESCRIPTION", "IMAGE_RESOURCE_ID", "FAVORITE"},
"_id = ?",
new String[] {Integer.toString(drinkId)},
null, null,null);
//Move to the first record in the Cursor
if (cursor.moveToFirst()) {
//Get the drink details from the cursor
String nameText = cursor.getString(0);
String descriptionText = cursor.getString(1);
int photoId = cursor.getInt(2);
boolean isFavorite = (cursor.getInt(3) == 1);
//Populate the drink name
TextView name = (TextView)findViewById(R.id.name);
name.setText(nameText);
//Populate the drink description
TextView description = (TextView)findViewById(R.id.description);
description.setText(descriptionText);
//Populate the drink image
ImageView photo = (ImageView)findViewById(R.id.photo);
photo.setImageResource(photoId);
photo.setContentDescription(nameText);
//Populate the favorite checkbox
CheckBox favorite = (CheckBox)findViewById(R.id.favorite);
favorite.setChecked(isFavorite);
}
} catch(SQLiteException e) {
Toast toast = Toast.makeText(this, "Database unavailable", Toast.LENGTH_SHORT);
toast.show();
}
}
//Update the database when the checkbox is clicked
public void onFavoriteClicked(View view){
int drinkId = (Integer) getIntent().getExtras().get(EXTRA_DRINKID);
new UpdateDrinkTask().execute(drinkId);
}
//Inner class to update the drink.
private class UpdateDrinkTask extends AsyncTask<Integer, Void, Boolean> {
private ContentValues drinkValues;
protected void onPreExecute() {
CheckBox favorite = (CheckBox) findViewById(R.id.favorite);
drinkValues = new ContentValues();
drinkValues.put("FAVORITE", favorite.isChecked());
}
protected Boolean doInBackground(Integer... drinks) {
int drinkId = drinks[0];
SQLiteOpenHelper starbuzzDatabaseHelper =
new StarbuzzDatabaseHelper(DrinkActivity.this);
try {
SQLiteDatabase db = starbuzzDatabaseHelper.getWritableDatabase();
db.update("DRINK", drinkValues,
"_id = ?", new String[]{Integer.toString(drinkId)});
db.close();
return true;
} catch (SQLiteException e) {
return false;
}
}
protected void onPostExecute(Boolean success) {
if (!success) {
Toast toast = Toast.makeText(DrinkActivity.this,
"Database unavailable", Toast.LENGTH_SHORT);
toast.show();
}
}
}
}
package com.example.chapter15;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.widget.CursorAdapter;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private SQLiteDatabase db;
private Cursor favoritesCursor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setupOptionsListView();
setupFavoritesListView();
}
private void setupOptionsListView() {
//Create an OnItemClickListener
AdapterView.OnItemClickListener itemClickListener =
new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> listView,
View itemView,
int position,
long id) {
if (position == 0) {
Intent intent = new Intent(MainActivity.this,
drink_category.class);
startActivity(intent);
}
}
};
//Add the listener to the list view
ListView listView = (ListView) findViewById(R.id.list_options);
listView.setOnItemClickListener(itemClickListener);
}
private void setupFavoritesListView() {
//Populate the list_favorites ListView from a cursor
ListView listFavorites = (ListView) findViewById(R.id.list_favorites);
try{
SQLiteOpenHelper starbuzzDatabaseHelper = new StarbuzzDatabaseHelper(this);
db = starbuzzDatabaseHelper.getReadableDatabase();
favoritesCursor = db.query("DRINK",
new String[] { "_id", "NAME"},
"FAVORITE = 1",
null, null, null, null);
CursorAdapter favoriteAdapter =
new SimpleCursorAdapter(MainActivity.this,
android.R.layout.simple_list_item_1, favoritesCursor,
new String[]{"NAME"},
new int[]{android.R.id.text1}, 0);
listFavorites.setAdapter(favoriteAdapter);
} catch(SQLiteException e) {
Toast toast = Toast.makeText(this, "Database unavailable", Toast.LENGTH_SHORT);
toast.show();
}
//Navigate to DrinkActivity if a drink is clicked
listFavorites.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> listView, View v, int position, long id) {
Intent intent = new Intent(MainActivity.this, DrinkActivity.class);
intent.putExtra(DrinkActivity.EXTRA_DRINKID, (int) id);
startActivity(intent);
}
});
}
@Override
public void onRestart() {
super.onRestart();
Cursor newCursor = db.query("DRINK",
new String[] { "_id", "NAME"}, "FAVORITE = 1",
null, null, null, null);
ListView listFavorites = (ListView) findViewById(R.id.list_favorites);
CursorAdapter adapter = (CursorAdapter) listFavorites.getAdapter();
adapter.changeCursor(newCursor);
favoritesCursor = newCursor;
}
//Close the cursor and database in the onDestroy() method
@Override
public void onDestroy(){
super.onDestroy();
favoritesCursor.close();
db.close();
}
}
package com.example.chapter15;
import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class StarbuzzDatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "starbuzz"; // the name of our database
private static final int DB_VERSION = 2; // the version of the database
StarbuzzDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
updateMyDatabase(db, 0, DB_VERSION);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
updateMyDatabase(db, oldVersion, newVersion);
}
private static void insertDrink(SQLiteDatabase db, String name, String description,
int resourceId) {
ContentValues drinkValues = new ContentValues();
drinkValues.put("NAME", name);
drinkValues.put("DESCRIPTION", description);
drinkValues.put("IMAGE_RESOURCE_ID", resourceId);
//DrinkValues ("NAME": Latte, "DESCRIPTION": Espresso, "IMAGE_RESOURCE_ID": 53556)
db.insert("DRINK", null, drinkValues);
}
private void updateMyDatabase(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion < 1) {
//Just to create our table in the database
db.execSQL("CREATE TABLE DRINK (_id INTEGER PRIMARY KEY AUTOINCREMENT, "
+ "NAME TEXT, "
+ "DESCRIPTION TEXT, "
+ "IMAGE_RESOURCE_ID INTEGER);");
//
insertDrink(db, "Latte", "Espresso and steamed milk", R.drawable.latte);
insertDrink(db, "Cappuccino", "Espresso, hot milk and steamed-milk foam",
R.drawable.cappuccino);
insertDrink(db, "Filter", "Our best drip coffee", R.drawable.filter);
}
if (oldVersion < 2) {
db.execSQL("ALTER TABLE DRINK ADD COLUMN FAVORITE NUMERIC;");
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<ImageView
android:layout_width="124dp"
android:layout_height="124dp"
android:background="@drawable/photologinsignup"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/banner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Login"
android:textSize="40sp"
android:textColor="#395185"
android:gravity="center"
android:textStyle="bold"
android:fontFamily="serif"
android:layout_marginTop="30dp"
/>
<EditText
android:id="@+id/email_Login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:hint="Email Address"
android:inputType="textEmailAddress"
android:textSize="24sp"
/>
<EditText
android:id="@+id/password_Login"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Password"
android:inputType="textPassword"
android:textSize="24sp" />
<TextView
android:id="@+id/ForgetPass"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="serif"
android:text="Forgot Password?"
android:layout_gravity="left"
android:textColor="#4A90E2"
android:textSize="19sp"
android:textStyle="italic" />
<Button
android:id="@+id/LogInBtn"
android:layout_width="380dp"
android:layout_height="60dp"
android:layout_marginTop="24dp"
android:backgroundTint="#4A90E2"
android:text="Login"
android:textSize="26dp"
android:layout_gravity="center"
android:textStyle="bold"
app:cornerRadius="20dp"
android:onClick="loginMethod"
/>
<TextView
android:id="@+id/NewRegister"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="serif"
android:text="Register with us!"
android:textSize="20sp"
android:textColor="#4A90E2"
android:textStyle="normal"
android:layout_marginTop="20dp"
android:onClick="registerPage" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ImageView
android:layout_width="124dp"
android:layout_height="124dp"
android:background="@drawable/photologinsignup"
tools:ignore="MissingConstraints" />
<TextView
android:id="@+id/banner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Register"
android:textSize="40sp"
android:textColor="#395185"
android:gravity="center"
android:textStyle="bold"
android:fontFamily="serif"
android:layout_marginTop="30dp"
/>
<EditText
android:id="@+id/FullName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:ems="10"
android:hint="Full Name"
android:textSize="24sp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
/>
<EditText
android:id="@+id/email"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Email Address"
android:inputType="textEmailAddress"
android:textSize="24sp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
/>
<EditText
android:id="@+id/Password"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
android:textSize="24sp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
/>
<Button
android:id="@+id/Register"
android:layout_width="380dp"
android:layout_height="60dp"
android:layout_marginTop="50dp"
android:backgroundTint="#4A90E2"
android:text="Register"
android:onClick="registerDB"
android:textSize="26dp"
android:textStyle="bold"
app:cornerRadius="20dp"
android:layout_gravity="center"/>
</LinearLayout>
package com.example.registeration;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Patterns;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
public class MainActivity extends AppCompatActivity {
private FirebaseAuth mAuth;
private EditText et_email, et_password;
@Override
protected void onCreate(Bundle savedInstanceState) {
//you tell the Dalvik VM to run your code in addition to the existing code in the onCreate() of the parent class
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAuth = FirebaseAuth.getInstance();
et_email = findViewById(R.id.email_Login);
et_password = findViewById(R.id.password_Login);
}
public void registerPage(View view){
// Log.d("Test","Test");
Intent intent = new Intent(this, SignUpActivity.class);
startActivity(intent);
}
public void loginMethod(View view) {
String email = et_email.getText().toString().trim();
String password = et_password.getText().toString().trim();
if(email.isEmpty()){
et_email.setError("Email is required");
et_email.requestFocus();
return;
}
if(!Patterns.EMAIL_ADDRESS.matcher(email).matches()){
et_email.setError("Please provide valid Email");
et_email.requestFocus();
return;
}
if(password.isEmpty() || password.length() < 6){ //you can also check the num. of chars.
et_password.setError("Password is required and must be > 6");
et_password.requestFocus();
return;
}
mAuth.signInWithEmailAndPassword(email,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()){
//redirect to the mainpage
Toast.makeText(getApplicationContext(), "CORRECT!", Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(getApplicationContext(), task.getException().toString(), Toast.LENGTH_LONG).show();
}
}
});
}
}
package com.example.registeration;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.util.Patterns;
import android.view.View;
import android.widget.*;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.FirebaseApp;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.FirebaseDatabase;
public class SignUpActivity extends AppCompatActivity {
private FirebaseAuth mAuth;
private EditText et_fullName, et_password, et_email;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
mAuth = FirebaseAuth.getInstance();
et_fullName = (EditText) findViewById(R.id.FullName);
et_email = (EditText) findViewById(R.id.email);
et_password = (EditText) findViewById(R.id.Password);
}
public void registerDB(View view){
String name = et_fullName.getText().toString();
String email = et_email.getText().toString().trim();
String password = et_password.getText().toString().trim();
if(name.isEmpty()){
et_fullName.setError("Full Name is required");
et_fullName.requestFocus();
return;
}
if(email.isEmpty()){
et_email.setError("Email is required");
et_email.requestFocus();
return;
}
if(password.isEmpty() || password.length() < 6){ //you can also check the num. of chars.
et_password.setError("Password is required and must be > 6");
et_password.requestFocus();
return;
}
if(!Patterns.EMAIL_ADDRESS.matcher(email).matches()){
et_email.setError("Please provide valid Email");
et_email.requestFocus();
return;
}
mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()){
User user = new User(name, email);
FirebaseDatabase.getInstance().getReference("users").child(
FirebaseAuth.getInstance().getCurrentUser().getUid()).setValue(user).
addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()){
Toast.makeText(getApplicationContext(), "User has been registered!", Toast.LENGTH_LONG).show();
//redirect to the main page
}
else{
Toast.makeText(getApplicationContext(), "FAILED: "+task.getException().toString(), Toast.LENGTH_LONG).show();
}
}
});
}
else{
Toast.makeText(getApplicationContext(), task.getException().toString(), Toast.LENGTH_LONG).show();
}
}
});
}
package com.example.registeration;
public class User {
public String fullName, email;
public User(String fullName, String email){
this.fullName = fullName;
this.email = email;
}
}
<?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android" xmlns:map="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/map" android:name="com.google.android.gms.maps.SupportMapFragment" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MapsActivity" />
package com.example.googlemap;
import androidx.fragment.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.example.googlemap.databinding.ActivityMapsBinding;
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
private ActivityMapsBinding binding;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMapsBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Add a marker in Sydney and move the camera
LatLng uj_loc = new LatLng(21.913, 39.263);
mMap.addMarker(new MarkerOptions().position(uj_loc).title("Marker in UJ"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(uj_loc));
CameraUpdate zoom=CameraUpdateFactory.zoomTo(15);
mMap.animateCamera(zoom);
}
}
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="10dp" android:paddingRight="10dp" android:orientation="vertical"> <ImageView android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" android:id="@+id/capturedImage" /> <Button android:id="@+id/btnTakePicture" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Take a Photo" android:textStyle="bold" android:layout_gravity="center" android:layout_marginLeft="50dp" android:layout_marginRight="50dp" /> </LinearLayout>
package com.example.camera_example;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.provider.MediaStore;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Button btnCapture;
private ImageView imgCapture;
private static final int Image_Capture_Code = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnCapture =(Button)findViewById(R.id.btnTakePicture);
imgCapture = (ImageView) findViewById(R.id.capturedImage);
//Note: If you are using the camera by invoking an existing camera app, your application does not need to request this permission.
btnCapture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cInt = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cInt,Image_Capture_Code);
}
});
}
//called with request code == 1.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == Image_Capture_Code) {
if (resultCode == RESULT_OK) {
Bitmap bp = (Bitmap) data.getExtras().get("data");
imgCapture.setImageBitmap(bp);
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
}
}
}
}