Pick image from photo library

gistfile1.m

// set delegate on header file
// <UINavigationControllerDelegate, UIImagePickerControllerDelegate>

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
    // set on a UIImageView
    self.selectedImage.image = image;
    [self dismissModalViewControllerAnimated:YES];
}

- (IBAction)openPicker:(id)sender
{
    UIImagePickerController *pickerController = [[UIImagePickerController alloc] init];
    pickerController.delegate = self;
    [self presentViewController:pickerController animated:YES completion:nil];
}