iOS 应用第一次安装未获得网络权限处理

前提

由于大陆工信部出台的新规指出，应用在未经用户允许的前提下，系统不能授予其使用联网、获取定位的功能。Apple在iOS10系统中加入了关于应用使用数据的授权弹窗提示，用户在iOS系统及以上系统中第一次打开应用时，会被要求对于是否授予应用联网权限进行选择。

问题

很多开发者习惯把预加载接口放到AppDelegate的- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法里面，但是现在第一次安装，默认是没有联网能力的，按之前的写法会导致配置接口请求失败，首页数据为空，第一次获取DeviceToken失败，添加推送通知失败，第三方初始化失败等等一系列问题。

解决方法

使用CTCellularData加AFNetworkReachabilityManager

CTCellularData类用于获取网络权限状态以及监听状态改变回调

AFNetworkReachabilityManager用于实时监测当前的网络状态

上代码

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    
    //1.获取网络权限 根据权限进行人机交互
       if (__IPHONE_10_0) {
           [self networkStatus:application didFinishLaunchingWithOptions:launchOptions];
       }else {
           //2.2已经开启网络权限 监听网络状态
           [self addReachabilityManager:application didFinishLaunchingWithOptions:launchOptions];
       }



    self.window = [[UIWindow alloc] initWithFrame:CGRectMake(0,0, KScreenWidth, KScreenHeight)];
    self.window.backgroundColor = [UIColor whiteColor];
    MainViewController *vc = [[MainViewController alloc] init];
    self.window.rootViewController = vc;
    [self.window makeKeyAndVisible];
    return YES;
}

/*
 获取网络权限状态
 */
- (void)networkStatus:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    //2.根据权限执行相应的交互
    CTCellularData *cellularData = [[CTCellularData alloc] init];
      
    /*
     此函数会在网络权限改变时再次调用
     */
    cellularData.cellularDataRestrictionDidUpdateNotifier = ^(CTCellularDataRestrictedState state) {
        switch (state) {
            case kCTCellularDataRestricted:
                  
                NSLog(@"Restricted");
                //2.1权限关闭的情况下 再次请求网络数据会弹出设置网络提示
               
                break;
            case kCTCellularDataNotRestricted:
                  
                NSLog(@"NotRestricted");
                //2.2已经开启网络权限 监听网络状态
                [self addReachabilityManager:application didFinishLaunchingWithOptions:launchOptions];
                break;
            case kCTCellularDataRestrictedStateUnknown:
                  
                NSLog(@"Unknown");
               
                break;
                  
            default:
                break;
        }
    };
}

/**
 实时检查当前网络状态
 */
- (void)addReachabilityManager:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    AFNetworkReachabilityManager *afNetworkReachabilityManager = [AFNetworkReachabilityManager sharedManager];
      

    [afNetworkReachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        switch (status) {
            case AFNetworkReachabilityStatusNotReachable:{
                NSLog(@"网络不通：%@",@(status) );
                break;
            }
            case AFNetworkReachabilityStatusReachableViaWiFi:{
                NSLog(@"网络通过WIFI连接：%@",@(status));
             
                [self getInfo_application:application didFinishLaunchingWithOptions:launchOptions];
             
                break;
            }
            case AFNetworkReachabilityStatusReachableViaWWAN:{
                NSLog(@"网络通过无线连接：%@",@(status) );
              
                [self getInfo_application:application didFinishLaunchingWithOptions:launchOptions];
            
                break;
            }
            default:
                break;
        }
    }];
      
    [afNetworkReachabilityManager startMonitoring];  //开启网络监视器；
}

//把以前写在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions里面的一些初始化操作放在该方法
- (void)getInfo_application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      
    [self.updateBusiness  checkUpdateWithBothApi];//检查app更新
    
//发送通知给APP首屏页面，让其有网络时重新请求
    [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil];
}