【Android】Toast on non-UI thread

错误：can't toast on a thread that has not called looper.prepare()

https://stackoverflow.com/questions/3875184/cant-create-handler-inside-thread-that-has-not-called-looper-prepare

1 activity.runOnUiThread(new Runnable() {
2   public void run() {
3     Toast.makeText(activity, "Hello", Toast.LENGTH_SHORT).show();
4   }
5 });

标签：Toast,thread,prepare,UI,looper,activity,Android,called
来源： https://www.cnblogs.com/imoon22/p/14404221.html