How to raise an alert dialog from BroadcastReceiver class?

Question

I have used a timer method in an Activity class. In that method I have an intent from Activity class to a BroadcastReceiver class.

Answer 1

If your activity is running when the BroadcastReceiver gets the intent you should be able to use runOnUiThread to run a method that creates an AlertDialog, e.g.:

public void onReceive(Context context, Intent intent)
{
    runOnUiThread(new Runnable() {
        public void run() {
            AlertDialog.Builder d = new AlertDialog.Builder(MyActivity.this);
            b.setMessage("This is a dialog from within a BroadcastReceiver");
            b.create().show();
        }
    });

}

This works if you make your BroadcastReceiver an inner class to your Activity.