Question

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
 UIImage *tempImage = [info objectForKey:UIImagePickerControllerOriginalImage];
 imgview.image = tempImage;
 [self dismissModalViewControllerAnimated:YES];
 [picker release];
}

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
 [self dismissModalViewControllerAnimated:YES];
 [picker release];
}


-(IBAction) calllib
{
 img1 = [[UIImagePickerController alloc] init];
 img1.delegate = self;
 img1.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
 [self presentModalViewController:img1 animated:YES];

}

all the codes above works well for taking out photos from the photo library.
problem is that when i tried to use it under the UIActionSheet it does not work.
i just copy the lines of codes from the -(IBAction) calllib as follow.


- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
 UIImage *detectface = [Utilities detectFace:imgview.image];
 UIImage *grayscale = [Utilities grayscaleImage:imgview.image];
 UIImage *avatars = [Utilities avatars:imgview.image];

 img1 = [[UIImagePickerController alloc] init];
 img1.delegate = self;
 img1.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

 switch (buttonIndex)
 {
  case 0:
   [self presentModalViewController:img1 animated:YES];
   imgview.image = detectface;
   break;
  case 1:
   [self presentModalViewController:img1 animated:YES];
   imgview.image = grayscale;
   break;
  case 2:
   [self presentModalViewController:img1 animated:YES];
   imgview.image = avatars;
   break;

  default:
   break;
 }

}

它不起作用。有人可以帮我弄清问题是什么？

开关盒完美无需[self presentModalViewController：img1 animated：YES]; ...

感谢

Answer 1

 img1 = [[UIImagePickerController alloc] init];
 img1.delegate = self;
 img1.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

 switch () {
   case 0:
    [self presentModalViewController:img1 animation:YES];
 }

 – (void)imagePickerController:didFinishPickingMediaWithInfo:(NSDictionary *)dict {
    UIImage *image = [dict objectForKey:SOME_KEY_HERE];
    imageView.image = [Utilities detectFace:image];

 }

获取图像后需要调用检测面，这意味着在UIImagePickerController返回的委托方法中

如何使UIImagePickerController在开关案例UIActionSheet下工作

1 个答案: