How to close any activity of my application by clicking on a notification?

Question

When I click on a notification apply the following:

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
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Answer 1

You could set a PendingIntent in the notification that would be caught by the Activity in a broadcastReceiver. Then in the broadcastReceiver of the activity, call finish(); This should close your activity.

i.e. Put this in your activity

BroadcastReceiver mReceiver = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        finish();
    }

};

This in your onCreate()

IntentFilter filter = new IntentFilter("android.intent.CLOSE_ACTIVITY");
registerReceiver(mReceiver, filter);

And then your PendingIntent in your notification should have action of "android.intent.CLOSE_ACTIVITY" and for safety a package of your activity's package.

This is done by

Intent intent = new Intent("android.intent.CLOSE_ACTIVITY");
PendingIntent pIntent = PendingIntent.getBroadcast(context, 0 , intent, 0);

Then add it to your notification by using the setContentIntent(pIntent) when building the notification with the Notification.Builder.