Programmatically made UIButton is not deleting when action fired - ios

Question

Currently I have a button that makes a draggable UIView with a subview of a UIButton. When I long press that UIButton, an alert view comes up and I have two buttons, a delete button and a cancel button. The delete button is supposed to delete the last long pressed UIButton, however it deletes the most recently made UIButton.
I would like for the delete button on the alert view to delete the last long pressed UIButton.(not the most recently created) I have tried different if statements, but this is what I have so far. Here is my code for my .m file:
- (void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.state == UIGestureRecognizerStateBegan ) {
UIAlertController * alert= [UIAlertController
alertControllerWithTitle:#"Would you like to delete this rep?"
message:nil
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* deleteButton = [UIAlertAction
actionWithTitle:#"Delete"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action)
{
[_buttonField removeFromSuperview];
[alert dismissViewControllerAnimated:YES completion:nil];
}];
UIAlertAction* cancelButton = [UIAlertAction
actionWithTitle:#"Cancel"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action)
{
[alert dismissViewControllerAnimated:YES completion:nil];
}];
[alert addAction:deleteButton];
[alert addAction:cancelButton];
[self presentViewController:alert animated:YES completion:nil];
}
}
- (void)panWasRecognized:(UIPanGestureRecognizer *)panner {
{
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPress:)];
[self.buttonField addGestureRecognizer:longPress];
_draggedView = panner.view;
CGPoint offset = [panner translationInView:_draggedView.superview];
CGPoint center = _draggedView.center;
_draggedView.center = CGPointMake(center.x + offset.x, center.y + offset.y);
_draggedView.layer.borderWidth = 2.0f;
_buttonField.layer.borderColor = [UIColor blackColor].CGColor;
[_buttonField setTintColor:[UIColor magentaColor]];
// Reset translation to zero so on the next `panWasRecognized:` message, the
// translation will just be the additional movement of the touch since now.
[panner setTranslation:CGPointZero inView:_draggedView.superview];
}
}
- (IBAction)addRepButton:(UIBarButtonItem *)newRep {
self.labelCounter++;
buttonCount ++;
if (buttonCount >= 0 )
{
_buttonField = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 28, 28)];
[_buttonField setTitle:[NSString stringWithFormat:#"%i", self.labelCounter]forState:UIControlStateNormal];
[_buttonField setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
_buttonField.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
_buttonField.userInteractionEnabled = YES;
_buttonField.layer.cornerRadius = 14;
_buttonField.layer.borderColor = [UIColor blackColor].CGColor;
_buttonField.layer.borderWidth = 2.0f;
_buttonField.titleLabel.font = [UIFont systemFontOfSize: 18];
UIPanGestureRecognizer *panner = [[UIPanGestureRecognizer alloc]
initWithTarget:self action:#selector(panWasRecognized:)];
[_buttonField addGestureRecognizer:panner];
[self.view addSubview:_buttonField];
}
}
How do I go about making the delete button remove the most recently long pressed _buttonField?

Answer 1

You are saying:
[_buttonField removeFromSuperview];
Well, as your loop shows (inside addRepButton), _buttonField is the most recently added button, because every time you add a button, you set it to that button. So what is happening is exactly what you are saying to happen.
I presume, although it is a little hard to tell from your code, that the button you want to delete is the one whose long press gesture recognizer this is — that is, gesture.view.

Answer 2

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.state == UIGestureRecognizerStateBegan ) {
//Update
UIButton *buttonPressedLatest;
UIView *ifBtnPressed = gesture.view;
if([ifBtnPressed isKindOfClass:[UIButton class]]){
buttonPressedLatest = (UIButton *)ifBtnPressed;
}
UIAlertController * alert= [UIAlertController
alertControllerWithTitle:#"Would you like to delete this rep?"
message:nil
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* deleteButton = [UIAlertAction
actionWithTitle:#"Delete"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action)
{
[buttonPressedLatest removeFromSuperview];
[alert dismissViewControllerAnimated:YES completion:nil];
}];
UIAlertAction* cancelButton = [UIAlertAction
actionWithTitle:#"Cancel"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action)
{
[alert dismissViewControllerAnimated:YES completion:nil];
}];
[alert addAction:deleteButton];
[alert addAction:cancelButton];
[self presentViewController:alert animated:YES completion:nil];
}
}
Try this once and tell me if this works.