错误异常监听

上线的产品中，出现了bug一般都不能及时反馈给开发人员，因此需要在代码中添加异常监听，当程序崩溃时，及时上传错误报告。或者通过友盟第三方来添加错误报告。

1. 第三方统计【友盟】

更好的集成，方便开发者

2. AvoidCrash-github

避免常见的崩溃

设置为-fno-objc-arc

- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions
{
[AvoidCrash becomeEffective];

 //监听通知:AvoidCrashNotification, 获取AvoidCrash捕获的崩溃日志的详细信息
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dealwithCrashMessage:) name:AvoidCrashNotification object:nil];
    return YES;
}

- (void)dealwithCrashMessage:(NSNotification *)note {
    //注意:所有的信息都在userInfo中
    //你可以在这里收集相应的崩溃信息进行相应的处理(比如传到自己服务器)
    NSLog(@"%@",note.userInfo);
}

3. 自定义的捕捉异常

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    NSSetUncaughtExceptionHandler(&UncaughtExceptionHandler);
    return YES;
}


void UncaughtExceptionHandler(NSException *exception){

    // 异常日志获取
    NSArray  *excpArr = [exception callStackSymbols];
    NSString *reason = [exception reason];
    NSString *name = [exception name];
    NSString *excpCnt = [NSString stringWithFormat:@"exceptionType: %@ \n reason: %@ \n stackSymbols: %@",name,reason,excpArr];

    // 日常日志保存（可以将此功能单独提炼到一个方法中）
    NSArray  *dirArr  = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *dirPath = dirArr[0];
    NSString *logDir = [dirPath stringByAppendingString:@"/CrashLog"];

   
    BOOL isExistLogDir = YES;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    if (![fileManager fileExistsAtPath:logDir]) {
        isExistLogDir = [fileManager createDirectoryAtPath:logDir withIntermediateDirectories:YES attributes:nil error:nil];
    }

    if (isExistLogDir) {
        // 此处可扩展
        NSString *logPath = [logDir stringByAppendingString:@"/crashLog.txt"];
        [excpCnt writeToFile:logPath atomically:YES encoding:NSUTF8StringEncoding error:nil];
    }
}