how to pause and resume an uiview animation when button clicking?

Question

i have scrollview, which has zoomscale property inside uiview begin animation,it animates well for some duration,but in between these animations i want to pause the animation and resume the animation,please help me out of this

[UIView beginAnimations:@"anim1" context:NULL];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:fanim];
z = [[arrImage1 objectAtIndex:1] floatValue];
scroll.zoomScale = z;
NSLog(@"   %f",scroll.zoomScale);
if (iw != 0 || ih != 0) 
{
    image1.frame = CGRectMake(0, 0, iw,ih);
}
z = [[arrImage2 objectAtIndex:1] floatValue];
scroll1.zoomScale = z;
z = [[arrImage3 objectAtIndex:1] floatValue];
scroll2.zoomScale = z;
[UIView commitAnimations];

You can refer the following : http://stackoverflow.com/questions/3211065/how-to-pause-and-resume-uiview-animation and http://stackoverflow.com/questions/9104487/how-to-pause-and-resume-uiview-animation-without-block-animation — V-Xtreme, Apr 08 '13 at 05:16

score 0 · Accepted Answer · answered Apr 08 '13 at 05:17

That is possible by using nstimer. Try using nstimer for starting and pausing animation here is a set of code which you can use. Implement your animation within a method and use the nstimer to fire it and pause it:

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    [self startTimer];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [self stopTimer];
}

- (void)startTimer {
    NSTimer *timer = [[NSTimer alloc] initWithFireDate:[NSDate dateWithTimeIntervalSinceNow:3.0] interval:3.0 target:self selector:@selector(this is where your animation method name goest) userInfo:nil repeats:YES];
    [[NSRunLoop currentRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
    self.animationmethodename = timer;
    [timer release];
}

- (void)stopTimer {
    [self.animationmethodname invalidate];
    self.animationmethodtimer = nil;
}

Then replace the animationmethodname with the name of the method you are using to create the animation.

The Animation method name is the method that you use to implenet the code you show in your question. I guess you probably put that set of code in viewdidload, if so then you can remove it and create a -(void) method and whatever name you place after that would be what you replace animationmethodname with. — Adrian P, Apr 08 '13 at 05:46

how to pause and resume an uiview animation when button clicking?

1 Answers1