如何记录并分析CRASH日志方法一

最新推荐文章于 2024-08-24 18:06:48 发布

原创最新推荐文章于 2024-08-24 18:06:48 发布 · 1.5k 阅读

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#crash #exception #null #signal #struct #class

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本文深入探讨了iOS开发中异常处理和信号管理的重要性和实践方法，通过实现自定义异常处理器和信号处理器，确保应用在遇到错误时能够优雅地退出，并记录错误信息。同时，介绍了如何配置不同类型的信号处理器来处理特定的信号事件，从而提升应用的稳定性和用户体验。

打开main.m 添加修改以下代码

void exceptionHandler(NSException *exception)

{

    id delegate = [[UIApplication sharedApplication] delegate];

    if([delegate respondsToSelector:@selector(terminateWithException:)])

    {

        [delegate performSelector:@selector(terminateWithException:) withObject:exception];

    }

}
void signalHandler(int sig, siginfo_t *info, void *context)

{

    // signal exception

    NSException *e = [NSException exceptionWithName:@"signal exception"

                                             reason:[NSString stringWithFormat:@"signal %d", sig]

                                           userInfo:nil];

    exceptionHandler(e);

}

int main(int argc, char *argv[])
{
    // For uncaultexception

    NSSetUncaughtExceptionHandler(&exceptionHandler);

    // For signals

    struct sigaction sigAction;

    sigAction.sa_sigaction = signalHandler;

    sigAction.sa_flags = SA_SIGINFO;

    sigemptyset(&sigAction.sa_mask);

    sigaction(SIGQUIT, &sigAction, NULL);

    sigaction(SIGILL, &sigAction, NULL);

    sigaction(SIGTRAP, &sigAction, NULL);

    sigaction(SIGABRT, &sigAction, NULL);

    sigaction(SIGEMT, &sigAction, NULL);

    sigaction(SIGFPE, &sigAction, NULL);

    sigaction(SIGBUS, &sigAction, NULL);

    sigaction(SIGSEGV, &sigAction, NULL);

    sigaction(SIGSYS, &sigAction, NULL);

    sigaction(SIGPIPE, &sigAction, NULL);

    sigaction(SIGALRM, &sigAction, NULL);

    sigaction(SIGXCPU, &sigAction, NULL);

    sigaction(SIGXFSZ, &sigAction, NULL);

    @autoreleasepool {



        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

然后再打开AppDelegate.m

增加函数

-(void)terminateWithException:(NSException*)e

{

    static BOOL deadway = NO;

    if(deadway)

        return;

    deadway = YES;

/ / NSLog(@"Exception --- %@", e); E就是错误信息了,建议写到一个文件里



    [self applicationWillTerminate:[UIApplication sharedApplication]];

    deadway = NO;

}