Reputation: 6614

animating a button with delays - iPhone

I'm trying to have a button move to a co-ordinates, pause, move to another co-orinates, pause, then move again. the process should then repeat infinitely. what I have right now just moves the last step.

this is what I have so far ('mover' is the UIButton name):

- (void) firstAnimation {

        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.5];
        [UIView setAnimationDelay:5];
        [UIView setAnimationRepeatCount:-1];
        [UIView setAnimationRepeatAutoreverses:NO];

        CGPoint pos = mover.center;
        pos.y = 200.f;
        pos.x = 169.f;
        mover.center = pos;

        [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(firstAnimation:) userInfo:nil repeats:NO];
        pos.y = 100.f;
        pos.x = 179.f;
        mover.center = pos;

        [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(firstAnimation:) userInfo:nil repeats:NO];
        pos.y = 160.f;
        pos.x = 129.f;
        mover.center = pos;

        [UIView commitAnimations];

}

thanks for any help

Upvotes: 1

Answers (3)

David Foster

Reputation: 3834

If you're shipping for iOS4 exclusively, I thoroughly recommend using blocks and the following method:

[UIView animateWithDuration:kAnimationDuration
                      delay:kAnimationDelay
                    options:UIViewAnimationCurveEaseInOut
                 animations:^ {
                     // your animations here.
                 }
                 completion:^(BOOL finished) {
                     // what you want to do upon animation completion here.
                 }];

Note that in the completion block you can just as well cue up another animation. In fact, you could store the three animation blocks as block variables and then simply pass them in to the above method to be executed, one after another, until the third completes. Then just restart the process!

Blocks are your friends.

Upvotes: 1