IOS 本地保存Crash日志信息

//在appdelegate中注册通知

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    NSSetUncaughtExceptionHandler(&uncaughtExceptionHandler);
  
    return YES;
}

//将错误日志信息写入文件

void uncaughtExceptionHandler(NSException *exception)
{
    
    // 异常的堆栈信息
    NSArray *stackArray = [exception callStackSymbols];
    
    // 出现异常的原因
    NSString *reason = [exception reason];
    
    // 异常名称
    NSString *name = [exception name];
    
    NSString *exceptionInfo = [NSString stringWithFormat:@"Exception reason：%@\nException name：%@\nException stack：%@",name, reason, stackArray];
    
    NSMutableArray *tmpArr = [NSMutableArray arrayWithArray:stackArray];
    
    [tmpArr insertObject:reason atIndex:0];
    
    //保存到本地  --  当然你可以在下次启动的时候，上传这个log
    
    NSString *str = [NSString stringWithFormat:@"%@/Documents/error.log",NSHomeDirectory()];
    NSLog(@"错误日志路径%@",str);
    [exceptionInfo writeToFile:[NSString stringWithFormat:@"%@/Documents/error.log",NSHomeDirectory()]  atomically:YES encoding:NSUTF8StringEncoding error:nil];
    
}