iPhoneX/Xs/XR/Xs Max通过状态栏判断网络状态

判断网络情况 这里没有用AFN判断，下文方法是通过扫描状态栏的显示情况进行判断的：

一、之前(非刘海屏)的用法：

1、首先定义网络类型为枚举类型：

// 网络类别枚举类型
typedef NS_ENUM(NSUInteger, NetWorkType) {
    
    NetWorkTypeNone = 0,         // 无网
    
    NetWorkType2G = 1,           // 2G
    
    NetWorkType3G = 2,          // 3G
    
    NetWorkType4G = 3,          // 4G
    
    NetWorkTypeWiFI = 5,       // wifi
    
};

2、自定义方法，(通过遍历手机状态栏的显示)求得网络类型：

+ (NetWorkType)currentNetworkType{
    // 1、求出状态栏的子视图数组
    NSArray *infoArray = [[[[UIApplication sharedApplication] valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];
    
    // 2、遍历子视图求出网络类型
    NetWorkType type;
    for (id info in infoArray){
        if ([info isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
            type = [[info valueForKeyPath:@"dataNetworkType"] integerValue];
            
            return (NetWorkType)type;  // 0 : 无网； 1 : 2G网； 2 : 3G网； 3 : 4G网；5 : wifi网;
        }
    }
    return NetWorkTypeNone;
}

注意：利用这种遍历的方法在iPhoneX/Xs/XR/Xs Max 机型上运行是崩溃，其实根本原因是手机刘海儿的状态栏子视图发生了变化，用以下方法便可解决。

二、刘海屏的用法：

+ (NetWorkType)currentNetworkType{
    
//  iPhoneX、iPhoneXR、iPhoneXS_Max是宏定义 (iPhoneX == iPhoneXs)
    if (iPhoneX || iPhoneXR || iPhoneXS_Max) { 

        UIApplication *app = [UIApplication sharedApplication];
        id statusBar = [app valueForKeyPath:@"statusBar"];
        id statusBarView = [statusBar valueForKeyPath:@"statusBar"];
        UIView *foregroundView = [statusBarView valueForKeyPath:@"foregroundView"];
        
        NSArray *subviews = [[foregroundView subviews][2] subviews];
        
        for (id subview in subviews) {

            if ([subview isKindOfClass:NSClassFromString(@"_UIStatusBarWifiSignalView")]) {

                return NetWorkTypeWiFI;  // wifi网
            }else if ([subview isKindOfClass:NSClassFromString(@"_UIStatusBarStringView")]) {

                NSString *str = [subview valueForKeyPath:@"_originalText"]; // @"text" @"originalText"一样
                if ([str isEqualToString:@"4G"]) {

                    return NetWorkType4G;  // 4G网
                }else if([str isEqualToString:@"3G"]){

                    return NetWorkType3G; // 3G网
                }else{

                    return NetWorkType2G; // 2G网
                }
            }
        }
        return NetWorkTypeNone;  // 无网络
    }
}

另：关于刘海儿的视图分层如下图所示(手机是4G)，结果获得的就是4G网络：

iPhoneX状态栏

注意：我们用的这种方法提交之后，审核被拒，说是在iOS 12上，崩溃，通过解析苹果返回的崩溃日志，可得知，有的设备key-value键值对是不存在的，截图如下所示：

崩溃日志

解决办法：使用苹果自带的：Reachability

第一步：从Demo(左上角)中，把Reachability.h & Reachability.m文件拷贝到项目里

第二步：代码实现

+ (NetWorkType)currentNetworkType{
    
    Reachability *reachability   = [Reachability reachabilityWithHostName:@"www.apple.com"];
    NetworkStatus internetStatus = [reachability currentReachabilityStatus];
   
    NetWorkType net = NetWorkTypeNone;
    switch (internetStatus) {
        case ReachableViaWiFi:
            net = NetWorkTypeWiFI;
            break;
            
        case ReachableViaWWAN:
            net = NetWorkType4G;
//            net = [self getNetType];   //判断具体类型
            break;
            
        case NotReachable:
            net = NetWorkTypeNone;
            
        default:
            break;
    }
    
    return net;
    
}
+ (NSString *)getNetType
{
    CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
    NSString *currentStatus = info.currentRadioAccessTechnology;
    NSString *netconnType;
    if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyGPRS"]) {
        netconnType = @"GPRS";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyEdge"]) {
        netconnType = @"2.75G EDGE";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyWCDMA"]){
        netconnType = @"3G";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyHSDPA"]){
        netconnType = @"3.5G HSDPA";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyHSUPA"]){
        netconnType = @"3.5G HSUPA";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyCDMA1x"]){
        netconnType = @"2G";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyCDMAEVDORev0"]){
        netconnType = @"3G";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyCDMAEVDORevA"]){
        netconnType = @"3G";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyCDMAEVDORevB"]){
        netconnType = @"3G";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyeHRPD"]){
        netconnType = @"HRPD";
    }else if ([currentStatus isEqualToString:@"CTRadioAccessTechnologyLTE"]){
        netconnType = @"4G";
    }
    return netconnType;
}

over!