iOS - Taking A Picture After Button Tap in UIImagePickerController CustomOverlayView - ios

Question

I have searched similar questions for answers, but nothing I have tried has worked. When I tap on either button in my overlay view, the camera only focuses - no action is triggered. Here is my code:
Update: The previous question was answered - the code was fine, I just wasn't alerting myself in the testIfButtonResponds method. Now I am wondering how to dismiss the camera and show the captured picture in a UIImageView.
Also, the UIImageView *DisplayedPhoto was made in IB, so it has a frame.
#interface CameraViewController ()
#property UIImagePickerController *PickerController;
#property (weak, nonatomic) IBOutlet UIImageView *DisplayedPhoto;
#end
- (UIView *)createCustomOverlayView
{
// Main overlay view created
UIView *main_overlay_view = [[UIView alloc] initWithFrame:self.view.bounds];
// Clear view (live camera feed) created and added to main overlay view
// ------------------------------------------------------------------------
UIView *clear_view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - self.HeightOfButtons)];
clear_view.opaque = NO;
clear_view.backgroundColor = [UIColor clearColor];
[main_overlay_view addSubview:clear_view];
// ------------------------------------------------------------------------
// Creates the buttons on the bottom of the view (on top of the live camera feed)
// Then adds the buttons to the main overlay view
// ------------------------------------------------------------------------
for(int i = 0; i < 2; i++) {
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
// when a button is touched, UIImagePickerController snaps a picture
[button addTarget:self action:#selector(testIfButtonResponds) forControlEvents:UIControlEventTouchUpInside];
button.frame = CGRectMake( i * self.view.frame.size.width / 2, self.view.frame.size.height - self.HeightOfButtons, self.view.frame.size.width / 2, self.HeightOfButtons);
[button setBackgroundColor:[UIColor redColor]];
[main_overlay_view addSubview:button];
}
// ------------------------------------------------------------------------
return main_overlay_view;
}
- (void)makeCustomCameraAppear
{
self.PickerController = [[UIImagePickerController alloc] init];
self.PickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
self.PickerController.showsCameraControls = NO;
self.PickerController.delegate = self;
UIView *overlay_view = [self createCustomOverlayView];
[self.PickerController setCameraOverlayView:overlay_view];
[self presentViewController:self.PickerController animated:YES completion:NULL];
}
- (void)viewDidAppear:(BOOL)animated
{
[self makeCustomCameraAppear];
}
- (void) testIfButtonResponds
{
[self.PickerController takePicture];
[self.PickerController dismissViewControllerAnimated:YES completion:nil];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *chosen_image = info[UIImagePickerControllerEditedImage];
self.DisplayedPhoto.image = chosen_image;
[self.PickerController dismissViewControllerAnimated:YES completion:NULL];
}