Android 中异常：Can‘t toast on a thread that has not called Looper.prepare()

Android 中异常：Can’t toast on a thread that has not called Looper.prepare()

1.原因：子线程直接弹Toast

2.解决：

Looper.prepare();
Toast.makeText(MainActivity.this, "信息", Toast.LENGTH_SHORT).show();
Looper.loop();