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

来源：互联网发布：md5加密 js url 编辑：程序博客网时间：2024/05/25 01:36

错误信息：在Android开发中，从主线程调用非主线程中的方法，程序就直接挂掉，异常信息是：Can't create handler inside thread that has not called Looper.prepare()

原因分析：在非主线程中调用Toast提示，然后当程序运行到Toast的地方的时候程序就直接挂掉了

解决方法：在调用Toast（或者AlertDialog）的地方的前面加上Looper.prepare()，后边加上Looper.loop()即可解决问题；也就是说用Looper.prepare()和Looper.loop()把Toast前后包起来

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