implementation.m

- (IBAction)action:(UIButton *)sender;
{
    UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil
                                                       delegate:self
                                              cancelButtonTitle:@"Cancel"
                                         destructiveButtonTitle:nil
                                              otherButtonTitles:@"Take Picture", @"Choose from Library", nil];
    [sheet showInView:self.view];
}


- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex;
{
  switch (buttonIndex) {
    case 0: //Take Picture
    {
      [self startCameraControllerFromViewController:self usingDelegate:self];
      break;
    }
    case 1: //Choose From Library
    {
      [self startMediaBrowserFromViewController:self usingDelegate:self];
      break;
    }
    default: // 2 = cancel
    break;
  }
}

#pragma mark - Image Picking/Taking

- (BOOL)startCameraControllerFromViewController:(UIViewController *)controller
                                  usingDelegate:(id <UIImagePickerControllerDelegate, UINavigationControllerDelegate>) delegate;
{
    if (([UIImagePickerController isSourceTypeAvailable:
          UIImagePickerControllerSourceTypeCamera] == NO)
        || (delegate == nil)
        || (controller == nil))
        return NO;
    
    
    UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
    cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;
    
    // Displays a control that allows the user to choose picture or
    // movie capture, if both are available:
    cameraUI.mediaTypes =
    [UIImagePickerController availableMediaTypesForSourceType:
     UIImagePickerControllerSourceTypeCamera];
    
    // Hides the controls for moving & scaling pictures, or for
    // trimming movies. To instead show the controls, use YES.
    cameraUI.allowsEditing = NO;
    
    cameraUI.delegate = delegate;
    [controller presentViewController:cameraUI animated:YES completion:nil];
    
    return YES;
}

- (BOOL)startMediaBrowserFromViewController:(UIViewController *)controller
                              usingDelegate:(id <UIImagePickerControllerDelegate, UINavigationControllerDelegate>)delegate;
{
    
    if (([UIImagePickerController isSourceTypeAvailable:
          UIImagePickerControllerSourceTypeSavedPhotosAlbum] == NO)
        || (delegate == nil)
        || (controller == nil))
        return NO;
    
    UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init];
    mediaUI.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
    
    // Displays saved pictures and movies, if both are available, from the
    // Camera Roll album.
    mediaUI.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeSavedPhotosAlbum];
    
    // Hides the controls for moving & scaling pictures, or for
    // trimming movies. To instead show the controls, use YES.
    mediaUI.allowsEditing = NO;
    mediaUI.delegate = delegate;

    [controller presentViewController:mediaUI animated:YES completion:nil];
    return YES;
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;
{
    UIImage *image = info[UIImagePickerControllerOriginalImage];
    self.profileImage = image;
    if (image) {
        [self.profileImageViewButton setImage:image forState:UIControlStateNormal];
    }
    [self dismissViewControllerAnimated:YES completion:nil];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;
{
    [self dismissViewControllerAnimated:YES completion:nil];
}