java.lang.RuntimeException

Can't create handler inside thread that has not called Looper.prepare()

Samebug tips1

Any worker thread runs in background, since it is not intended to loop, is not connected to a Looper.for example doInBackground(). its implementation returns will be passed to onPostExecute() which runs on the UI thread.

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Solutions on the web465

  • via GitHub by zosocanuck
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  • via Stack Overflow by Mrugesh Thaker
    ,
  • Stack trace

    • java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.<init>(Handler.java:200) at android.os.Handler.<init>(Handler.java:114) at android.widget.Toast$TN.<init>(Toast.java:345) at android.widget.Toast.<init>(Toast.java:101) at android.widget.Toast.makeText(Toast.java:259) at com.xxx.yyy.OrdersFragment.onEventMainThread(OrdersFragment.java:90) at java.lang.reflect.Method.invoke(Native Method) at org.greenrobot.eventbus.EventBus.invokeSubscriber(EventBus.java:485) at org.greenrobot.eventbus.EventBus.postToSubscription(EventBus.java:416) at org.greenrobot.eventbus.EventBus.postSingleEventForEventType(EventBus.java:397) at org.greenrobot.eventbus.EventBus.postSingleEvent(EventBus.java:370) at org.greenrobot.eventbus.EventBus.post(EventBus.java:251)

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