Android Notification Example

Android Notification Example

MainActivity.java

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

public class MainActivity extends Activity implements View.OnClickListener {

NotificationHandler nHandler;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

nHandler = NotificationHandler.getInstance(this);

initUI();

}

private void initUI () {

setContentView(R.layout.activity_main);

findViewById(R.id.simple_notification).setOnClickListener(this);

findViewById(R.id.big_notification).setOnClickListener(this);

findViewById(R.id.progress_notification).setOnClickListener(this);

findViewById(R.id.button_notifcation).setOnClickListener(this);

}

@Override

public void onClick (View v) {

switch (v.getId()) {

case R.id.simple_notification:

nHandler.createSimpleNotification(this);

break;

case R.id.big_notification:

nHandler.createExpandableNotification(this);

break;

case R.id.progress_notification:

nHandler.createProgressNotification(this);

break;

case R.id.button_notifcation:

nHandler.createButtonNotification(this);

}

}

}

NotificationHandler.java

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Build;

import android.support.v4.app.NotificationCompat;

import android.support.v4.app.TaskStackBuilder;

import android.widget.Toast;

import java.util.Random;

public class NotificationHandler {

// Notification handler singleton

private static NotificationHandler nHandler;

private static NotificationManager mNotificationManager;

private NotificationHandler () {}

/**

* Singleton pattern implementation

* @return

*/

public static  NotificationHandler getInstance(Context context) {

if(nHandler == null) {

nHandler = new NotificationHandler();

mNotificationManager =

(NotificationManager) context.getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

}

return nHandler;

}

/**

* Shows a simple notification

* @param context aplication context

*/

public void createSimpleNotification(Context context) {

// Creates an explicit intent for an Activity

Intent resultIntent = new Intent(context, TestActivity.class);

// Creating a artifical activity stack for the notification activity

TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);

stackBuilder.addParentStack(TestActivity.class);

stackBuilder.addNextIntent(resultIntent);

// Pending intent to the notification manager

PendingIntent resultPending = stackBuilder

.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

// Building the notification

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)

.setSmallIcon(R.drawable.ic_launcher) // notification icon

.setContentTitle("I'm a simple notification") // main title of the notification

.setContentText("I'm the text of the simple notification") // notification text

.setContentIntent(resultPending); // notification intent

// mId allows you to update the notification later on.

mNotificationManager.notify(10, mBuilder.build());

}

public void createExpandableNotification (Context context) {

if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {

// Building the expandable content

NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();

String lorem = context.getResources().getString(R.string.long_lorem);

String [] content = lorem.split("\\.");

inboxStyle.setBigContentTitle("This is a big title");

for (String line : content) {

inboxStyle.addLine(line);

}

// Building the notification

NotificationCompat.Builder nBuilder = new NotificationCompat.Builder(context)

.setSmallIcon(R.drawable.ic_launcher) // notification icon

.setContentTitle("Expandable notification") // title of notification

.setContentText("This is an example of an expandable notification") // text inside the notification

.setStyle(inboxStyle); // adds the expandable content to the notification

mNotificationManager.notify(11, nBuilder.build());

} else {

Toast.makeText(context, "Can't show", Toast.LENGTH_LONG).show();

}

}

/**

* Show a determinate and undeterminate progress notification

* @param context, activity context

*/

public void createProgressNotification (final Context context) {

// used to update the progress notification

final int progresID = new Random().nextInt(1000);

// building the notification

final NotificationCompat.Builder nBuilder = new NotificationCompat.Builder(context)

.setSmallIcon(R.drawable.refresh)

.setContentTitle("Progres notification")

.setContentText("Now waiting")

.setTicker("Progress notification created")

.setUsesChronometer(true)

.setProgress(100, 0, true);

AsyncTask<Integer, Integer, Integer> downloadTask = new AsyncTask<Integer, Integer, Integer>() {

@Override

protected void onPreExecute () {

super.onPreExecute();

mNotificationManager.notify(progresID, nBuilder.build());

}

@Override

protected Integer doInBackground (Integer... params) {

try {

// Sleeps 2 seconds to show the undeterminated progress

Thread.sleep(5000);

// update the progress

for (int i = 0; i < 101; i+=5) {

nBuilder

.setContentTitle("Progress running...")

.setContentText("Now running...")

.setProgress(100, i, false)

.setSmallIcon(R.drawable.download)

.setContentInfo(i + " %");

// use the same id for update instead created another one

mNotificationManager.notify(progresID, nBuilder.build());

Thread.sleep(500);

}

} catch (InterruptedException e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPostExecute (Integer integer) {

super.onPostExecute(integer);

nBuilder.setContentText("Progress finished :D")

.setContentTitle("Progress finished !!")

.setTicker("Progress finished !!!")

.setSmallIcon(R.drawable.accept)

.setUsesChronometer(false);

mNotificationManager.notify(progresID, nBuilder.build());

}

};

// Executes the progress task

downloadTask.execute();

}

public void createButtonNotification (Context context) {

if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {

// Prepare intent which is triggered if the  notification button is pressed

Intent intent = new Intent(context, TestActivity.class);

PendingIntent pIntent = PendingIntent.getActivity(context, 0, intent, 0);

// Building the notifcation

NotificationCompat.Builder nBuilder = new NotificationCompat.Builder(context)

.setSmallIcon(R.drawable.ic_launcher) // notification icon

.setContentTitle("Button notification") // notification title

.setContentText("Expand to show the buttons...") // content text

.setTicker("Showing button notification") // status bar message

.addAction(R.drawable.accept, "Accept", pIntent) // accept notification button

.addAction(R.drawable.cancel, "Cancel", pIntent); // cancel notification button

mNotificationManager.notify(1001, nBuilder.build());

} else {

Toast.makeText(context, "You need a higher version", Toast.LENGTH_LONG).show();

}

}

}

TestActivity.java

import android.app.Activity;

import android.os.Bundle;

import android.widget.TextView;

public class TestActivity extends Activity {

@Override

protected void onCreate (Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

TextView text = new TextView(this);

text.setText("Test activity");

setContentView(text);

}

}

activity_main.xml

<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:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

android:orientation="vertical"

    tools:context=".MainActivity" >

<Button

android:id="@+id/simple_notification"

   android:text="Simple notification"

   android:layout_width="match_parent"

   android:layout_height="wrap_content"

style="@style/buttonStyle">

</Button>

<Button

android:id="@+id/big_notification"

android:text="Expandable with buttons"

android:layout_width="match_parent"

android:layout_height="wrap_content"

style="@style/buttonStyle">

</Button>

<Button

android:id="@+id/progress_notification"

android:text="Progress notification"

android:layout_width="match_parent"

android:layout_height="wrap_content"

style="@style/buttonStyle">

</Button>

<Button

android:id="@+id/button_notifcation"

android:text="Button notification"

android:layout_width="match_parent"

android:layout_height="wrap_content"

style="@style/buttonStyle">

</Button>

</LinearLayout>

I Am Not The Owner Of These Code .I Merely Have Copied Them From Various Sources. The Only Thing I Did Is That I Am Going To Present Them In More Easy Way To Understand.