Can't create handler inside thread that has not called Looper.prepare()
2017-07-03 13:09
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新启线程内直接操作UI（Toast / Dialog 等）会发生这样的情况，因为Looper是需要初始化的，Main线程内不需要初始化是因为每个Main线程一开始的时候便在底层创建了mainLooper（ActivityThread），具体原理后面再专门写一篇补上，现在简单的记录下解决办法：
Looper.prepare(); ToastShow(App.getInstance(), "请检查网络"); Looper.loop();
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