使用UIImagePickerController拍摄视频和选择器的视图，而不是全屏？

Question

我想在运行iOS7的应用程序中拍摄视频，然后使用UIImagePickerController来实现。但是我发现选择者的视图不是全屏的，在左边和右边都会出现两个黑色的视图？如何调整全屏尺寸。代码如下：

  picker.mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeMovie, nil];
  picker.videoQuality = UIImagePickerControllerQualityTypeIFrame1280x720;

我尝试用videoQuality设置UIImagePickerControllerQualityType640x480，然后在顶部和底部出现2个黑色视图。

当当前选择器(在iOS7上)时，如何更改状态栏样式？谢谢。

Answer 1

CGSize screenSize       = CGSizeMake(320, 708);
float cameraAspectRatio = 4.0 / 3.0;
float imageWidth        = floorf(screenSize.width * cameraAspectRatio);
float scale             = ceilf((screenSize.height / imageWidth) * 10.0) / 10.0;
myImagePickerController.cameraViewTransform   = CGAffineTransformMakeScale(scale, scale);

Answer 2

例如，您可以使用pickerViewcontroller代理来使用它。

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    UIImagePickerController * picker  = (UIImagePickerController *) navigationController;
    if (picker.sourceType != UIImagePickerControllerSourceTypeCamera) {
        [viewController.navigationItem setTitle:@"请选择照片"];
        viewController.navigationItem.leftBarButtonItem = ....
        viewController.navigationItem.rightBarButtonItem =  ...     
        }
    }

}