Android development Notification

The Android system has a notification bar, which is useful. Notifications are an important part of the interaction between Android and users. For example, new emails, short messages, and missed calls are displayed in the notification bar. We drag down the notification bar and click the notification information to display the specific notification content. Cool features.

We can also define the notification style, icons, notification sound, LED color, and flashing frequency.

Let's take a look at the example

1: package com. halzhang. android. notification; 2:  3: import android.app.Activity; 4: import android.app.Notification; 5: import android.app.NotificationManager; 6: import android.app.PendingIntent; 7: import android.content.Intent; 8: import android.os.Bundle; 9: import android.view.View; 10: import android.widget.Button; 11: /** 12: * notification 13: * @ author Zhang hanguo 14: */ 15: public class NotificationDemo extends Activity { 16: /** Called when the activity is first created. */ 17: // notification id 18: private static final int NOTICE_ID = 1222; 19: private Button notify; 20: private Button cancel; 21: @Override 22: public void onCreate(Bundle savedInstanceState) { 23: super.onCreate(savedInstanceState); 24: setContentView(R.layout.main); 25: notify = (Button) findViewById(R.id.noti); 26: cancel = (Button) findViewById(R.id.cancel); 27: notify.setOnClickListener(new View.OnClickListener() { 28: 29: @Override 30: public void onClick(View v) { 31: notityMe(); 32: } 33: }); 34: 35: cancel.setOnClickListener(new View.OnClickListener() { 36: 37: @Override 38: public void onClick(View v) { 39: final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 40: // notification of Cancellation 41: manager.cancel(NOTICE_ID); 42: } 43: }); 44: } 45: 46: private void notityMe(){ 47: // get notification manager. Notification is a system service. 48: final NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 49: // initialize the notification object p1: Notification icon p2: Notification status bar display prompt p3: Notification display time 50: Notification notification = new Notification (R. drawable. icon, "Notification test", System. currentTimeMillis ()); 51: // The Intent after the notification is clicked. 52: PendingIntent intent = PendingIntent.getActivity(this, 0, new Intent(this, NotificationDemo.class), 0); 53: // set Notification Information 54: notification. setLatestEventInfo (this, "notification title", "notification Information Content", intent ); 55: // notification 56: manager.notify(NOTICE_ID, notification); 57: } 58: }