Problem with simple animation

I am using animation on a button click first time show a view and second ti me hide a view. here is my code for hiding a view

-(IBAction)clickme
{
[UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.3];

    [UIView setAnimatio开发者_运维百科nCurve:UIViewAnimationCurveLinear];
    [UIView setAnimationDelegate:self];


    [view1 setAlpha:0.0];
[UIView commitAnimations];
}

similar code is there for showing the view.

But the problem arises when user click the button many times again and again....means i am using 2 seconds for my animation but if user presses the same button in during the animation then the output result is very bad.

I don't want to disable that button during the period of animation.

Is there any other way?

You need to keep track of whether there's an animation going on, and ignore the click if it is.

Declare an instance variable BOOL animating; in your class header, and initialise it to NO in your init.

Then,

-(IBAction)clickme
{
    if (animating) return;
    animating = YES;

[UIView beginAnimations:nil context:self];
    [UIView setAnimationDuration:0.3];

    [UIView setAnimationCurve:UIViewAnimationCurveLinear];
    [UIView setAnimationDelegate:self];

    [view1 setAlpha:0.0];
[UIView commitAnimations];
}

- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
    if (context == self)
        animating = NO;
}

try to use + (void)setAnimationBeginsFromCurrentState:(BOOL)fromCurrentState:

-(IBAction)clickme
{
[UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.3];
    [UIView setAnimationBeginsFromCurrentState:YES];

    [UIView setAnimationCurve:UIViewAnimationCurveLinear];
    [UIView setAnimationDelegate:self];


    [view1 setAlpha:0.0];
[UIView commitAnimations];
}