How to create toast from IntentService? It gets stuck on the screen

in onCreate() initialize a Handler and then post to it from your thread.

private class DisplayToast implements Runnable{  String mText;  public DisplayToast(String text){    mText = text;  }  public void run(){     Toast.makeText(mContext, mText, Toast.LENGTH_SHORT).show();  }}protected void onHandleIntent(Intent intent){    ...  mHandler.post(new DisplayToast("did something")); }

Here is the full IntentService Class code demonstrating Toasts that helped me:

package mypackage;import android.app.IntentService;import android.content.Intent;import android.os.Handler;import android.os.Looper;import android.widget.Toast;public class MyService extends IntentService {    public MyService() { super("MyService"); }    public void showToast(String message) {        final String msg = message;        new Handler(Looper.getMainLooper()).post(new Runnable() {            @Override            public void run() {                Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_LONG).show();            }        });    }    @Override    protected void onHandleIntent(Intent intent) {        showToast("MyService is handling intent.");    }}

Use the Handle to post a Runnable which content your operation

protected void onHandleIntent(Intent intent){    Handler handler=new Handler(Looper.getMainLooper());    handler.post(new Runnable(){    public void run(){         //your operation...        Toast.makeText(getApplicationContext(), "hello world", Toast.LENGTH_SHORT).show();    }  });