How to display Toast from a Service after main Activity finishes?

Question

UPDATE: I don\'t agree that this is a duplicate - because I am seeking for a way to exit the main app and still show a Toast from the service.

In a

Answer 1

OnHandleIntent will run in a differant Thread so you are showing Toast in a thread which is not allowed in android

so change your code like this

Handler handler = new Handler(Looper.getMainLooper());
handler.post(new Runnable() {

    @Override
    public void run() {
         Toast.makeText(getApplicationContext(), 
                       getString(R.string.car_opened), 
                       Toast.LENGTH_SHORT).show();              
    }
});

From this dead thread in service

IntentService will create a thread to handle the new intent, and terminated it immediately once the task has done. So, the Toast will be out of controlled by a dead thread.

You should see some exceptions in the console when the toast showing on the screen.