UIViewanimation animationDidStop method - ios

Question

I have a 8 imagaviews that I have added to my view with size (0,0). Now what I want to do is to pull op each imageView after each other with a UIViewanimation. I want to do 2 animations. First the size should go to from (0,0) --> (105,85) and after that is finished the imageview size should go from (105,85) --> (93,75)
Now I have a method where I first place all my imageViews on the correct place.All the images have size (0,0) At the end I call the method startAnimating
-(void)startAnimating{
[self animageButton:[arrButtons objectAtIndex:0]];
}
Then the first view animation ( from (0,0) --> (105,85) )
-(void)animageButton:(UIImageView *)imgButton{
loopIndex++;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2.0];
[UIView setAnimationDelegate:self];
CGRect btnFrame = imgButton.frame;
btnFrame.size.width = 105;
btnFrame.size.height = 85;
[UIView transitionWithView:self.view
duration:0.5f
options:UIViewAnimationOptionCurveEaseIn
animations:^{
imgButton.frame = btnFrame;
}
completion:nil];
[UIView commitAnimations];
[self animageButton2:imgButton];
}
this calls the second method (from (105,85) --> (93,75))
-(void)animageButton2:(UIImageView *)imgButton{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2.0];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector: #selector(animationDidStop:finished:context:)];
CGRect btnFrame2 = imgButton.frame;
btnFrame2.size.width = 93;
btnFrame2.size.height = 75;
[UIView transitionWithView:self.view
duration:0.5f
options:UIViewAnimationOptionCurveEaseIn
animations:^{
imgButton.frame = btnFrame2;
}
completion:nil];
[UIView commitAnimations];
}
Now at this point the first imageView should be animated. Now when the animation has finished. I to this.
-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
//do smth
if(loopIndex <= 7){
NSLog(#"called");
UIImageView *imgObj = [arrButtons objectAtIndex:loopIndex];
[self animageButton:imgObj];
}else{
NSLog(#"done");
return;
}
}
What it is doing at the moment it is animating all the images at the same time. But I want that the next imageview starts animating when the previous has done.
Can anyone help me with this ?

Answer 1

-(void)startAnimating
{
NSTimeInterval delay = 0.0;
for(UIImageView *imageView in arrButtons)
{
[self performSelector:#selector(animageButton:) withObject:imageView afterDelay:delay];
delay +=1.0;
}
}
-(void)animageButton:(UIImageView *)imgButton{
CGRect btnFrame = imgButton.frame;
btnFrame.size.width = 105;
btnFrame.size.height = 85;
[UIView animateWithDuration:0.5f animations:^{
imgButton.frame = btnFrame;
} completion:^(BOOL finished) {
[self animageButton2:imgButton];
}];
}
-(void)animageButton2:(UIImageView *)imgButton
{
CGRect btnFrame2 = imgButton.frame;
btnFrame2.size.width = 93;
btnFrame2.size.height = 75;
[UIView animateWithDuration:0.5f animations:^{
imgButton.frame = btnFrame2;
} completion:^(BOOL finished) {
}];
}
I have not tested the code. Let me know if there are any issues. Thanks.