使用一个Notification启动Activity

public class MultiComponentActivity extends Activity {

    NotificationManager notificationManager;
    private  final  int NOTIFICATION_ID=0x123;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_multi_component);

        notificationManager =(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
    }

    public void senNotification(View view){

        Intent intent=new Intent(MultiComponentActivity.this,MainActivity.class);
        PendingIntent pendingIntent=PendingIntent.getActivity(
                MultiComponentActivity.this,0,intent,0);
        Notification notification=new Notification.Builder(MultiComponentActivity.this)
                .setAutoCancel(true)
                .setTicker("new message")
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle("this is a notification")
                .setContentText("thank you for testing this app !")
                .setDefaults(Notification.DEFAULT_LIGHTS)
                .setWhen(System.currentTimeMillis())
                .setContentIntent(pendingIntent)
                .build();
        notificationManager.notify(NOTIFICATION_ID, notification);
    }
    public void cancelNotifiacation(View view){
        notificationManager.cancel(NOTIFICATION_ID);
    }

}

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