How to use Notification in Android?
Android represent the Notifications by using Notification class.We have to create a notification by using NotificationManager class,it can be received from the Activity via getSystemService() method.
Eg: NotificationManager notificationManager = (NotificationManager)getSystemService (NOTIFICATION_SERVICE);
Here i use two edit text for giving the email and message and one button for create a notification.
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/username_et"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="10dp"
android:inputType="text"/>
<EditText
android:id="@+id/mess_et"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="5dp"
android:inputType="text" />
<Button
android:id="@+id/button1"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:onClick="createNotification"
android:text="Create Notification" android:layout_gravity="center_horizontal"/>
</LinearLayout>
Another xml for receive the notification message UI, name as notification_receiver.xml
<?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" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is the result activity opened from the notification" >
</TextView>
</LinearLayout>
Java class name NotificationActivity.java
public class NotificationActivity extends Activity {
EditText username_et,mess_et;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void createNotification(View view) {
username_et=(EditText)findViewById(R.id.username_et);
mess_et=(EditText)findViewById(R.id.mess_et);
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.mss,"A new notification", System.currentTimeMillis());
// Hide the notification after its selected
notification.flags |= Notification.FLAG_AUTO_CANCEL;
Intent intent = new Intent(this, NotificationReceiver.class);
PendingIntent activity = PendingIntent.getActivity(this, 0, intent, 0);
notification.setLatestEventInfo(this, username_et.getText().toString(), mess_et.getText().toString(),activity);
notification.number += 1;
notificationManager.notify(0, notification);
}
}
and finally NotificationReceiver.java class.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.notification_receiver);
}
