How can I always display a Notification icon after I restart mobile phone?

Question

I am using the following code to add an icon to Notification status, it works well, it always display even if I exit the app.

But the icon disappears whenever I restart mobile phone, what can I do to make the icon always display even if I restart phone ?

private void showNotification() {

    NotificationManager notificationManager = (NotificationManager)
    this.getSystemService(android.content.Context.NOTIFICATION_SERVICE);


    Notification notification = new Notification(R.drawable.smsforward,"My System", System.currentTimeMillis());


    notification.flags |= Notification.FLAG_ONGOING_EVENT; 
    notification.flags |= Notification.FLAG_NO_CLEAR;

    CharSequence contentTitle = "My System Title"; 
    CharSequence contentText = "My System Title content"; 

    Intent notificationIntent = new Intent(this, SMSMain.class); 

    PendingIntent contentItent = PendingIntent.getActivity(this, 0,
            notificationIntent, 0);

    notification.setLatestEventInfo(this, contentTitle, contentText,contentItent);

    notificationManager.notify(0, notification);
}

Adnan · Accepted Answer · 2014-02-24T07:35:34.823

2

You need to listen when the boot is completed and then show same notification again. Here is a simple example.

In your manifest file.

<receiver android:name="BootNotificationReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</receiver>

And in your code.

 public class BootNotificationReceiver extends BroadcastReceiver
    {
    public void onReceive(Context context, Intent intent) {

     // display notification again
     showNotification();// or whatever

      }
    }

Happy Coding :)

edited Feb 24 '14 at 07:35

answered Feb 24 '14 at 07:30

Adnan

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Thanks! in my mainifest file I have the code , could I add a new ? – HelloCW Feb 24 '14 at 08:14
1

For sure. You may add as much broadcast receivers as you want. – Adnan Feb 24 '14 at 09:17

score 1 · Answer 2 · edited May 23 '17 at 12:28

1

You can handle the device boot up intent and launch the same notification again.

Android BroadcastReceiver, auto run service after reboot of device

edited May 23 '17 at 12:28

Community

1
1

answered Feb 24 '14 at 07:25

Ajit Pratap Singh

1,299
12
24

score 1 · Answer 3 · answered Feb 24 '14 at 07:35

Declare Broadcast Receiver in manifest xml.

public class BootReceiver extends BroadcastReceiver
    {

        @Override
        public void onReceive(Context ctx, Intent intent) {
            if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED))
            {
                // your code here
            }
        }
    }

How can I always display a Notification icon after I restart mobile phone?

3 Answers3