NSSetUncaughtExceptionHandler 无法捕获 iPhone 上的所有错误 [英] NSSetUncaughtExceptionHandler not catch all errors on iPhone

问题描述

我正在使用来自 http://code.google.com/的 GTMStackTracep/google-toolbox-for-mac.

我需要一种方法来测试最终用户在应用程序崩溃时向我发送错误.我知道如何将数据发送到我的网站，但问题是如何捕获所有未处理的错误.

I need a way to test end-user to send me errors when the app crash. I know how send data to my website but the problem is how catch all non-handled errors.

我有这个代码:

void exceptionHandler(NSException *exception) {
    NSLog(@"%@", [exception reason]);
    NSLog(@"%@", [exception userInfo]);
    NSLog(@"%@", GTMStackTraceFromException(exception));

    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle:NSLocalizedString(@"Error unexpected",@"Info: Can't save record")
                          message:GTMStackTraceFromException(exception) delegate:nil 
                          cancelButtonTitle:NSLocalizedString(@"Ok",@"Button: Ok") otherButtonTitles:nil];
    [alert show];
    [alert release];    
}

int main(int argc, char *argv[]) {
    //For crash report..
    NSSetUncaughtExceptionHandler(&exceptionHandler);
    //Normal code...
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    int retVal = UIApplicationMain(argc, argv, nil, nil);
    [pool release];
    return retVal;
}

然而，事情并没有发现很多错误，比如发布错误、访问错误等，然后应用程序消失了.我有两个问题不清楚为什么会发生，最终用户不知道该说什么.

However, the thing not caught a lot of errors, like a bad release, a BAD ACCES, etc, and the App disappear. I have 2 issues where is not clear why happend and the end-users have not clue about what to say.

(例如释放两次相同的 var 不会被捕获)

(For example release twice the same var is not catch)

那么，我如何得到所有这些讨厌的错误，以便最终用户简单地向我发送崩溃报告?

So, how I get ALL that pesky errors so the end-user simple send me a crash report?

推荐答案

EXC_BAD_ACCESS 不会生成异常，而是生成信号 (SIGSEGV).要捕获它，您需要一个信号处理程序.Christopher Atlan 写了一篇很好的解释如何处理这两种崩溃.请务必阅读第 1 部分和 第 2 部分.

EXC_BAD_ACCESS doesn't generate an exception, it generates a signal (SIGSEGV). To catch it, you need a signal handler. Christopher Atlan wrote a nice explanation of how to handle both kinds of crashes. Be sure to read both part 1 and part 2.

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