ImagePicker IOS errors i don't understand and don't know how to fix

Question

i want the user to select an image out of the iphone when they press on a button (via action: buttonClicked), and i want that image to view on the imageview i have (imageAddPicture is the name of the image view)

I found a lot of information but when i use this code i get following errors:

self, release, picker.sourceType = (sender == buttonClicked),...

can someone help me please? (i'm new to stackoverflow.com but i really need the help, i'll try to help other people to) This is the code i used:

-(IBAction)buttonClicked:(id)sender
{
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate = self;
    picker.allowsImageEditing = YES;
    picker.sourceType = (sender == buttonClicked) ?    UIImagePickerControllerSourceTypeCamera :
    UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    [self presentModalViewController: picker animated:YES];
    [picker release];
}
-(IBAction)selectExitingPicture
{
    if([UIImagePickerController isSourceTypeAvailable:
        UIImagePickerControllerSourceTypePhotoLibrary])
    {
        UIImagePickerController *picker= [[UIImagePickerController alloc]init];
        picker.delegate = self;
        picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        [self presentModalViewController:picker animated:YES];
        [picker release];
    }
}

-(void)imagePickerController:(UIImagePickerController *)picker
      didFinishPickingImage : (UIImage *)image
                 editingInfo:(NSDictionary *)editingInfo
{
    imageAddPicture.image = image;
    [picker dismissModalViewControllerAnimated:YES];
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)  picker
{
    [picker dismissModalViewControllerAnimated:YES];
}

Answer 1

You are working your project in Automatic Reference counting. So you don't need to release objects. Simply remove this line. Chil :)

picker.sourceType = (sender == buttonClicked) ?    UIImagePickerControllerSourceTypeCamera :
    UIImagePickerControllerSourceTypeSavedPhotosAlbum;

this line should be

picker.sourceType = (sender == buttonClicked:) ?    UIImagePickerControllerSourceTypeCamera :
    UIImagePickerControllerSourceTypeSavedPhotosAlbum;