iOS 网络状态检测

导入CoreTelephony.framework框架

CTCellularData *cellularData = [[CTCellularData alloc]init];
    cellularData.cellularDataRestrictionDidUpdateNotifier =  ^(CTCellularDataRestrictedState state){
        //状态改变时进行相关操作
    };

    CTCellularData *cellularData = [[CTCellularData alloc]init];
    CTCellularDataRestrictedState state = cellularData.restrictedState;
    switch (state) {
        case kCTCellularDataRestricted:
            NSLog(@"Restricrted");
            break;
        case kCTCellularDataNotRestricted:
            NSLog(@"Not Restricted");
            break;
        case kCTCellularDataRestrictedStateUnknown:
            NSLog(@"Unknown");
            break;
        default:
            break;
    }

date: 2017-07-16 16:00:00 author: "Gao Fei"