iOS 7.1 imagePicker CameraFlashMode不指示闪光灯状态

debugcn 发表于 Dev

埃利兹

我有iPhone应用程序，该应用程序将相机与自定义视图叠加在一起。我有一个按钮可以在相机闪光灯模式之间切换，这是代码

switch ([self.imagePickerController cameraFlashMode]) {
    case UIImagePickerControllerCameraFlashModeAuto:
        [self.imagePickerController setCameraFlashMode:UIImagePickerControllerCameraFlashModeOn];
        return @"On";
        break;

    case UIImagePickerControllerCameraFlashModeOn:
        [self.imagePickerController setCameraFlashMode:UIImagePickerControllerCameraFlashModeOff];
        return @"Off";
        break;

    case UIImagePickerControllerCameraFlashModeOff:
        [self.imagePickerController setCameraFlashMode:UIImagePickerControllerCameraFlashModeAuto];
        return @"Auto";
        break;

    default:
        break;
}

这是我的问题：在iOS 7.0x上可以正常工作，但是在iOS 7.1中，无论其实际状态如何，cameraFlashMode属性都将返回UIImagePickerControllerCameraFlashModeAuto。

闪光灯模式确实会改变，但是我没有得到任何指示。有什么线索吗？谢谢

大豪维

我这样解决了：

@property (nonatomic) NSInteger flashMode;

if (_flashMode == UIImagePickerControllerCameraFlashModeAuto)
{
    _flashMode = UIImagePickerControllerCameraFlashModeOff;
}
else if (_flashMode == UIImagePickerControllerCameraFlashModeOff)
{
    _flashMode = UIImagePickerControllerCameraFlashModeOn;
}
else if (_flashMode == UIImagePickerControllerCameraFlashModeOn)
{
    _flashMode = UIImagePickerControllerCameraFlashModeAuto;
}

_cameraPicker.cameraFlashMode = (UIImagePickerControllerCameraFlashMode)_flashMode;

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