Starting an activity from a service after HOME button pressed without the 5 seconds delay

Question

I'm experiencing the problem described in this Android issue: http://code.google.com/p/android/issues/detail?id=4536

Simply put, after pressing the HOME button, android prevents services and broadcast-receivers from calling startActivity for 5 seconds.

I've also noticed that (well, theoretically), having the following permission :

"android.permission.STOP_APP_SWITCHES" 

allows you to call resumeAppSwitches (which is defined in ActivityManagerService). Looking at the latest version of ActivityManagerService, this code is removed.

The question: How to launch an activity using startActivity without this 5 second delay?

Answer 1

Here is a solution I found.

Put your intent that you want to start immediately in a PendingIntent, then call the send() Method on it.

So instead of this

Intent intent = new Intent(context, A.class);                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                 context.startActivity(intent); 

just do this

Intent intent = new Intent(context, A.class);                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                 PendingIntent pendingIntent =                         PendingIntent.getActivity(context, 0, intent, 0);                 try {                     pendingIntent.send();                 } catch (PendingIntent.CanceledException e) {                     e.printStackTrace();                 }