Question

I have created a unbutton programatically and made an action

{
UIButton *myButton1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    myButton1.frame = CGRectMake(20, 20, 80, 44); 
    [myButton1 setTitle:@"Click Me!" forState:UIControlStateNormal];
    [myButton1 addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:myButton1];
}

and in IBAction i have a UIView as subview like this

- (IBAction)buttonClicked:(id)sender 
{
    CGRect myFrame = CGRectMake(0, 300, 100, 50);
    UIView *myView = [[UIView alloc] initWithFrame:myFrame];
    myView.backgroundColor = [UIColor lightGrayColor];
    [self.view addSubview:myView];
    [myView release];
}

What i now want is subview have to disappear when the user second time press myButton1. How can i do that?

Answer 1

Do some correction in our code –

**Action like this -** 

- (IBAction)buttonClicked:(id)sender 
 {
   UIView *myView;
   if([self.view viewWithTag:56])
   {
    [[self.view viewWithTag:56] removeFromSuperview];
  }
  else
  {
   CGRect myFrame = CGRectMake(0, 300, 100, 50);
   myView = [[UIView alloc] initWithFrame:myFrame];
   myView.backgroundColor = [UIColor lightGrayColor];
  [myView setTag:56];
  [self.view addSubview:myView];
  [myView release];
   }
}