默认情况下将闪光模式设为关闭

Question

我正在尝试将UIImagePickerController中的相机闪光模式设置为关闭，但我不明白the reference page。这是我的代码：

- (void)getMediaFromSource:(UIImagePickerControllerSourceType)sourceType {
NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];
if ([UIImagePickerController isSourceTypeAvailable:
     sourceType] && [mediaTypes count] > 0) {
    NSArray *mediaTypes = [UIImagePickerController
                           availableMediaTypesForSourceType:sourceType];
    mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil];
    UIImagePickerController *picker =
    [[UIImagePickerController alloc] init];
    UIImagePickerControllerCameraDevice *device;
    picker.mediaTypes = mediaTypes;
    picker.delegate = self;
    picker.allowsEditing = YES;
    picker.sourceType = sourceType;
    [self presentModalViewController:picker animated:YES];
    [picker release];
}}

我尝试过设置picker.cameraDevice = UIImagePickerControllerCameraFlashModeOff，但这会导致错误。参考页面说cameraDevice是一个属性。这是否意味着我需要自己创建该属性，还是位于某处？ '如果我对代码没有任何操作，但闪光模式设置为自动...

，则相机会工作

显然有一些我不理解的东西。 ：/

Answer 1

用{替换picker.cameraDevice = UIImagePickerControllerCameraFlashModeOff picker.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;