How to disappear uiview by a button click - iphone

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];
}
}

Answer 2

you can use [view removeFromSuperView] method to remove a view.

Answer 3

Change your buttonClicked: method to this.
- (void)buttonClicked:(id)sender
{
UIView *myView;
if(myView=[self.view viewWithTag:1234])
{
[myView removeFromSuperview];
}
else {
CGRect myFrame = CGRectMake(0, 300, 100, 50);
myView= [[UIView alloc] initWithFrame:myFrame];
[myView setTag:1234];
myView.backgroundColor = [UIColor lightGrayColor];
[self.view addSubview:myView];
[myView release];
}
[self.view setNeedsDisplay];
}
EDIT: It doesn't read well if you use IBAction and not use the Interface Builder.