appDelegate中是否有任何方法在应用程序崩溃时调用？ [英] Is there any method in appDelegate which is called when application crashes?

问题描述

当应用程序终止时，我需要在应用程序中保存一些数据，即使它崩溃了。我知道当应用程序终止时会调用 applicationWillTerminate ，但我不确定在应用程序崩溃时调用哪个方法。

有人可以帮助我吗？

I need to save some data in my application, when the application terminates and even if it crashes. I know that applicationWillTerminate is called when application terminates but I am not sure which method is called when application crashes.
Can someone help me here?

推荐答案

您可以添加自己的异常处理程序，以捕获错误。

Well you could add your own exception handler, to catch the error.

首先需要定义异常方法：

First you need to define the exception method:

void uncaughtExceptionHandler(NSException *exception) {
    // You code here, you app will already be unload so you can only see what went wrong.
}

然后告诉应用使用您的异常处理程序：

Then tell the app to use your exception handler:

- (void)applicationDidFinishLaunching:(UIApplication *)application { 
    NSSetUncaughtExceptionHandler(&uncaughtExceptionHandler);
    // The rest if you code  ....
}

那里没有办法让应用程序保存数据崩溃，因为保存可能是崩溃的原因！

There is no way to make the app save data on crashing, since saving could be the reason for the crash!

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