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

问题:Can t create handler inside thread that has not called Looper.prepare ,在报错的方法前加Looper.prepare 方法末尾加Looper.loop ,问题原因: 在android的多线程开发中,比如asyncTask,在其doInBackground 方法,调用了更新UI的方法。 解决办法: 把更新UI的操作,放到消息 ...

2019-05-29 16:13 0 1673 推荐指数:

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

最近做项目时出现个问题。 在一个基类中,创建一个Handler对象用于主线程向子线程发送数据,代码如下 但不知道为啥一直报错:Can't create handler inside thread that has not called Looper.prepare()。 搜索后 ...

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Can't toast on a thread that has not called Looper.prepare()

Android开发中Can't toast on a thread that has not called Looper.prepare()问题 说一下问题出现场景:   在一个Android项目中,利用okhttp进行网络访问判断用户输入的账号密码,当用户密码输错时弹出 Toast 进行提示 ...

Tue Nov 26 01:04:00 CST 2019 0 419
 
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