如何自定义 UIImagePicker 编辑视图？

Question

我需要用我自己的设计自定义默认的 UIImagePicker 编辑视图。我已使用以下代码创建图像选择器。

UIImagePickerController *imagePicker = [[UIImagePickerController alloc]init];
  imagePicker.delegate = self;
  imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
  imagePicker.allowsEditing = TRUE;
  [self presentViewController:imagePicker animated:YES completion:nil];

这将显示默认的相机视图，一旦我拍照，它将导航到带有“重拍”和“选择”按钮的默认编辑屏幕。我需要用我自己的设计替换这个屏幕。有没有可能实现这一目标的方法？

Answer 1

您需要创建一个自定义视图控制器并将其覆盖到默认的pickerViewController。

这是我的一个项目的示例代码：

- (BOOL)startCameraControllerFromViewController:(UIViewController *)controller withAnimation:(BOOL)animated {
   if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == NO) {
       ShowErrorMessage(nil, @"Your device doesn't support camera.");
       return NO;
   }

   CameraOverlayViewController *cameraOverlay = [controller.storyboard instantiateViewControllerWithIdentifier:FuCameraOverlayID];
   cameraOverlay.delegate = self;
   self.cameraOverlay = cameraOverlay;
   UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
   cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;
   cameraUI.allowsEditing = NO;
   cameraUI.showsCameraControls = NO;
   cameraUI.delegate = self;
   [cameraUI setCameraOverlayView:self.cameraOverlay.view];
   self.imagePicker = cameraUI;

   [controller presentViewController:self.imagePicker animated:animated completion:^{
       [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
   }];
   return YES;
}