android - Toast created in an IntentService never goes away

Question

I have an IntentService that downloads some files. The problem is that I create a Toast inside the IntentService like this

Toast.makeText(getApplicationContext(), "some message", Toast.LENGTH_SHORT).show();

The Toast will never disappear event if I exit the app. The only way to destroy it is to kill the process.

What am I doing wrong?

Answer 1

The problem is that IntentService is not running on the main application thread. you need to obtain a Handler for the main thread (in onCreate()) and post the Toast to it as a Runnable.

the following code should do the trick:

@Override
public void onCreate() {
    super.onCreate();
    mHandler = new Handler();
}

@Override
protected void onHandleIntent(Intent intent) {
    mHandler.post(new Runnable() {            
        @Override
        public void run() {
            Toast.makeText(MyIntentService.this, "Hello Toast!", Toast.LENGTH_LONG).show();                
        }
    });
}