iOS 网络的判断

方法一：

- (NSString *)networkingStatesFromStatebar {

    // 状态栏是由当前app控制的，首先获取当前app

    UIApplication *app = [UIApplication sharedApplication];

    

    NSArray *children = [[[app valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];

    

    int type = 0;

    for (id child in children) {

        if ([child isKindOfClass:[NSClassFromString(@"UIStatusBarDataNetworkItemView") class]]) {

            type = [[child valueForKeyPath:@"dataNetworkType"] intValue];

        }

    }

    

    NSString *stateString = @"wifi";

    

    switch (type) {

        case 0:

            stateString = @"notReachable";

            break;

            

        case 1:

            stateString = @"2G";

            break;

            

        case 2:

            stateString = @"3G";

            break;

            

        case 3:

            stateString = @"4G";

            break;

            

        case 4:

            stateString = @"LTE";

            break;

            

        case 5:

            stateString = @"wifi";

            break;

            

        default:

            break;

    }

    

    return stateString;

}

方法二：AFNetworkReachabilityManager

AFNetworkReachabilityManager*manager=[AFNetworkReachabilityManagersharedManager];
    /**
     *  监听网络状态
     *
     *  @param status 网络状态类型 枚举型
     */
    [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatusstatus) {
        switch (status) {
            case -1:
                [MBProgressHUD showError:@"网络不可知"];
                break;
            case 0:
                [MBProgressHUDshowError:@"当前处于无网络状态"];
                break;
            case 1:
                LVLog(@"当前处于移动网络状态");
                break;
            case 2:
                LVLog(@"当前处于WiFi网络状态");
                break;
            default:
                break;
        }
    }];

    [manager startMonitoring];