iOS 权限获取

iOS 8 以后需要进行plist文件配置
plist文件配置

####摄像头权限

    AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    
    if (authStatus == AVAuthorizationStatusRestricted|| authStatus == AVAuthorizationStatusDenied) {//没有权限
        

    }else{
        
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {//成功获取
            

        }else{//没有摄像头

        }

    }

```      

####麦克风权限

[[AVAudioSession sharedInstance] requestRecordPermission:^(BOOL granted) {

    if (granted) {//成功访问

    } else {//访问受限

    }
}];

####照片权限

if ([PHPhotoLibrary authorizationStatus] != PHAuthorizationStatusAuthorized) {//成功访问

}else{//访问受限

}

####定位权限

//判断定位用户权限
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

//判断状态
switch (status) {
    case kCLAuthorizationStatusAuthorizedAlways://一直获取

        break;
    case kCLAuthorizationStatusAuthorizedWhenInUse://使用期间

        break;
    case kCLAuthorizationStatusDenied://用户禁止

        break;
    case kCLAuthorizationStatusNotDetermined://未做决定
    {
        //获取权限
        //使用期间使用 NSLocationWhenInUseUsageDescription
        [_locationManager requestWhenInUseAuthorization];
        //一直使用 NSLocationAlwaysUsageDescription

// [_locationManager requestAlwaysAuthorization];
}
break;
case kCLAuthorizationStatusRestricted://受限制

        break;
    default:
        break;
}

####通讯录权限

ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);
//请求访问用户通讯录，无论成功与否block都会调用
ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) {

    if (granted) {//成功访问

    }else{//访问受限

    }
});