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();                         }     }); }