重用UIImagePickerController.cameraOverlayView

Question

我有一个视图的层次结构：

有两个孩子的compView：

bgView

objectView.

我将objectView传递给UIImagePickerController的cameraOverlayView属性。一旦ImagePicker完成，我将更新bgView中的图像，并且我希望继续显示视图树，包括作为overlayView传递给UIImagePickerController的objectView。

问题是，在调用dismissModalViewControllerAnimated关闭UIImagePickerController之后，objectView没有出现，就好像UIImagePickerContoller隐藏了它一样。我检查了调试器，它似乎没有被释放。指针仍然有效。但是视图没有显示。

你知道我可能做错了什么吗？

谢谢，艾迪

下面是一小段代码，向您展示我正在做什么：

来自myViewController.m：

- (void)loadView {
 CGRect rect = self.navigationController.view.bounds;
 compView = [[UIView alloc] initWithFrame:rect];
 bgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Storage/dummy_bg.png"]];

 objectView = [[PropImageView alloc] initWithImage:[UIImage imageNamed:@"Storage/rasta.png"]];

 [objectView setUserInteractionEnabled:YES];
 [objectView setMultipleTouchEnabled:YES];
 [compView addSubview:bgView];
 [compView addSubview:objectView];
 self.view = compView;
 [self placeObject];
 [objectView release];
 [bgView release];
 [compView release];

}

- (void) placeObject
{
 NSLog(@"camera button pressed");

 // make sure camera is avaialble before setting it as source
 //

 if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
#if !TARGET_IPHONE_SIMULATOR
  UIImagePickerController* picker = [[UIImagePickerController alloc] init];

  picker.sourceType = UIImagePickerControllerSourceTypeCamera; 

  picker.delegate = self;
  picker.allowsEditing = NO;
  picker.view.hidden = NO;
  picker.cameraOverlayView = objectView;
  [self presentModalViewController:picker animated:NO];
  [picker release];

#endif
 }


// from PickImageAppDelegate.m
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
 // Dismiss the image selection, hide the picker and
 [picker dismissModalViewControllerAnimated:YES];  
 bgView.image = [self rotateImage:image byOrientationFlag:UIImageOrientationRight];
}

Answer 1

picker dismissModalViewControllerAnimated:是；

那应该是

self dismissModalViewControllerAnimated:是；