Proper release of UIImagePickerController - ios4

Question

I'm a bit confused with this as I've seen way too many different variants and not sure which one is the correct way. Currently I have:
- (IBAction)pickImageFromLibrary:(id)sender
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
// [picker release];
}
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0.0f, 10.0f, 320.0f, 264.0f)];
self.studyView = imageView;
[imageView release];
[self.tableView setTableHeaderView:studyView];
self.fitImage = [ImageHelper image:image fitInView:studyView];
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera)
{
UIImageWriteToSavedPhotosAlbum(image, self, #selector(image:didFinishSavingWithError:contextInfo:), nil);
}
studyView.image = self.fitImage;
[self dismissModalViewControllerAnimated:YES];
[picker release];
}
I'm allocating the UIImagePickerController in the first method but wouldn't it be logical to only release it in the 2nd method when I dismiss it?

Answer 1

No, because it's retained when presented modally, via presentModelViewController. This is the common pattern you'll find when presenting new view controllers, whether modally, custom view controllers or not. This is fine:
- (IBAction)pickImageFromLibrary:(id)sender
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
[picker release];
}