- (void)check {
      // 判斷是否是模擬器
        if ([[UIDevice deviceVersion] isEqualToString:@"iPhone Simulator"]) {
            [self showInfo:@"請(qǐng)用真機(jī)進(jìn)行測(cè)試, 此模塊不支持模擬器測(cè)試"];
            return NO;
        }
        
        // 判斷是否有攝像頭
        if(![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
            [self showInfo:@"您的設(shè)備沒有攝像頭或者相關(guān)的驅(qū)動(dòng), 不能進(jìn)行直播"];
            return NO;
        }
        
        // 判斷是否有攝像頭權(quán)限
        AVAuthorizationStatus  authorizationStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
        if (authorizationStatus == AVAuthorizationStatusRestricted|| authorizationStatus == AVAuthorizationStatusDenied) {
            [self showInfo:@"app需要訪問您的攝像頭。\\n請(qǐng)啟用攝像頭-設(shè)置/隱私/攝像頭"];
            return NO;
        }
        
        // 開啟麥克風(fēng)權(quán)限
        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        if ([audioSession respondsToSelector:@selector(requestRecordPermission:)]) {
            [audioSession performSelector:@selector(requestRecordPermission:) withObject:^(BOOL granted) {
                if (granted) {
                    return YES;
                }
                else {
                    [self showInfo:@"app需要訪問您的麥克風(fēng)。\\n請(qǐng)啟用麥克風(fēng)-設(shè)置/隱私/麥克風(fēng)"];
                    return NO;
                }
            }];
        }
}