如何在UIImagePickerController的Editing View上设置Custom overlay视图？

Question

所有

我创建了具有委托的UIImagePickerController并从PhotoLibrary中选择图像。

imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType =  UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.delegate = self;
imagePicker.allowsEditing = YES;
[self presentModalViewController:imagePicker animated:YES];

当应用程序到达UIImagePickerController的Editing视图时，我设置了一个Overlay视图并为其创建了两个按钮。 Cancel and Choose

在取消按钮上单击

[imagePicker popToViewController:[currentViewController.viewControllers objectAtIndex:1] animated:YES];

这个鳕鱼工作正常。

但是，如果我在此处设置代码，则choose按钮不起作用，

[self imagePickerController:imagePicker didFinishPickingMediaWithInfo:[imagePicker mediaTypes]];

比它返回信息字典的NULL值。

还有其他方法可以在Editing ImagePicker上设置叠加视图吗？

问候，

Answer 1

试试这个代码

CustomOverlayView *CustomOverlayView = [[CustomOverlayView alloc] initWithFrame:CGRectZero];

    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
    {
        imagePickerController = [[UIImagePickerController alloc] init];
        imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;     
        imagePickerController.allowsEditing = NO;
        imagePickerController.delegate = self;
        imagePickerController.showsCameraControls = YES;
        [imagePickerController.view addSubview:CustomOverlayView];
        [self presentModalViewController:imagePickerController animated:YES];

    }