Question

What would be the code to delete buttons that was created programmatically for this case for example:

for (m=0; m<f;m++ )
    {
        numerodeboton=partenumero+m+1;
        //NSLog(@"crear boton2, %i", numerodeboton);
        UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [button setBackgroundImage:[UIImage imageNamed:@"boton.png"] forState:UIControlStateNormal];
        [button addTarget:self action:@selector(notasCurso)forControlEvents:UIControlEventTouchUpInside];
        [button setTitle:[NSString stringWithFormat:@"Botón %d", numerodeboton] forState:UIControlStateNormal];
        button.frame = CGRectMake(espacioh+m*(h+d)-z + h/2, y + (l-1)*(v+d) + v/2, 1, 1);
        button.layer.cornerRadius = 30;
        button.clipsToBounds = YES;
        button.layer.borderColor=[UIColor blackColor].CGColor;
        button.layer.borderWidth=0.01f;
        [button setTitleColor:[UIColor darkGrayColor] forState:UIControlStateNormal];
        button.tag = numerodeboton;
        [UIView animateWithDuration:0.05*numerodeboton animations:^{
            button.frame = CGRectMake(espacioh+m*(h+d)-z, y + (l-1)*(v+d), h, v);
        }];
        [self.view addSubview:button];
    }

Let’s say that I want to delete the button with tag = 3, what would be the code?

Answer 1

The line [[self.view viewWithTag:3] removeFromSuperview]; would get the button with tag 3 and then remove it. If you have multiple buttons with a tag of 3, just loop through them like so:

while (UIView *aView = [self.view viewWithTag:3]) {
    [aView removeFromSuperview];
}