安卓UncaughtExceptionHandler的实例化一个AlertDialog休息 [英] Android UncaughtExceptionHandler that instantiates an AlertDialog breaks

问题描述

正如标题所说，我有一个的UncaughtExceptionHandler 在被设置为默认我的自定义应用程序类设置时，我的应用程序启动。

不过，虽然没有在文档中我已阅读，你不能实例化一个对话框使用 MyApplication.this 或 getApplicationContext（）。当我尝试这样做，我收到了

  

    

窗口管理器，$ BadTokenException ...

  

我需要一种替代方法。我曾经想过做一个新的活动，以弥补这一点，但宁可让它成为一个 AlertDialog 。

有没有一种方法可以让我得到一个有效的范围内，以我的的UncaughtExceptionHandler 从内所有MyApplication 类？

解决方案

  

我已阅读，你不能使用MyApplication.this或对话实例getApplicationContext

正确的。应用程序上下文不用于构建用户界面特别有用。

  

我曾想过做一个新的活动，以弥补这一点，但宁可让它成为一个AlertDialog。

这是 AlertDialog 是不可能在这种情况下。对于初学者来说，只有一个活动可以打开一个对话框，并没有你的活动可能正在运行（例如，坠毁在一个后台服务）和有效的（例如，你有一个，但它是一个崩溃）。

编辑：固定previous段清理混乱

As the title says, I have an UncaughtExceptionHandler set in my custom application class that gets set as the default when my application starts.

However, while not in the documentation I have read that you cannot instantiate a Dialog using MyApplication.this or getApplicationContext(). When I try to do it, I get a

WindowManager$BadTokenException...

I need an alternative. I have thought of making a new activity to compensate for this but would rather have it be an AlertDialog.

Is there a way I can get a valid context to my UncaughtExceptionHandler from inside MyApplication class?

解决方案

I have read that you cannot instantiate a Dialog using MyApplication.this or getApplicationContext

Correct. The Application context is not especially useful for constructing UIs.

I have thought of making a new activity to compensate for this but would rather have it be an AlertDialog.

An AlertDialog is impossible in this case. For starters, only an activity can open a dialog, and none of your activities may be running (e.g., crash in a background service) and valid (e.g., you had one, but it's the one that crashed).

EDIT: Fixed previous paragraph to clear up confusion

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