UIPickerController memory leak after selecting photo - ios

Question

I am having a memory leak whenever I select a photo within my image picker controller. I have tried doing my own research as to why this happens but I have found nothing close to my situation. Various tutorials I have learnt from have a memory leak when using the image picker controller as well. All I am doing is choosing a photo and then the image picker controller dismisses. I have tried finding a solution for many days now, but no luck, I tend to try to find solutions before asking for help, any help is greatly appreciated, here is my code.
#property (nonatomic, strong) UIImagePickerController *imagePicker;
#property (nonatomic, strong) UIImage *image;
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.tableView reloadData];
if (self.image == nil && [self.videoFilePath length] == 0) {
self.imagePicker = [[UIImagePickerController alloc] init];
self.imagePicker.delegate = self;
self.imagePicker.allowsEditing = NO;
self.imagePicker.videoMaximumDuration = 10;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else {
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:self.imagePicker.sourceType];
[self presentViewController:self.imagePicker animated:YES completion:nil];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
self.image = [info objectForKey:UIImagePickerControllerOriginalImage];
UIImage *newImage = [self resizeImage:self.image toWidth:200 andHeight:200];
self.image = newImage;
if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {
UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil);
}
}
else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) {
// A video was taken/selected!
NSURL *videoUrl = info[UIImagePickerControllerMediaURL];
self.movieUrl = videoUrl;
self.videoFilePath = videoUrl.absoluteString;
if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {
// Save the video!
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(self.videoFilePath)) {
UISaveVideoAtPathToSavedPhotosAlbum(self.videoFilePath, nil, nil, nil);
}
}
}
[self dismissViewControllerAnimated:YES completion:nil];
}
When I use instruments I get, that the responsible instance is in Core Foundation. CFString. I am not very familiar with debugging memory leak's like these in Objective-C. I'd appreciate a hand here! Thank You.

Answer 1

The leak is coming from Apple's code. The only thing you are doing wrong is retaining the UIImagePickerController as an instance property. Stop doing that; create the UIImagePickerController as a temporary local variable each time you present it. Apart from that, there's nothing you can do.