错误：Unable to add window -- token null is not for an application
2017-09-22 15:07
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今天开发中遇到问题：android.view.WindowManager$BadTokenException: Unable to add window – token null is not for an application
后来原因是因为创建Dialog时传递的Context类型问题。
getApplicationContext()获得的context为整个应用的上下文，而对于AlertDialog来说，是需要依赖一个View，而View是对应于Activity的。所以，一般传入应该为Acitivity.this。
后来原因是因为创建Dialog时传递的Context类型问题。
getApplicationContext()获得的context为整个应用的上下文，而对于AlertDialog来说，是需要依赖一个View，而View是对应于Activity的。所以，一般传入应该为Acitivity.this。
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