Resetting scale after transformation - ios

Question

_cardView =[card initCard];
[self.view addSubview:_cardView];
_cardView.transform=CGAffineTransformScale(CGAffineTransformIdentity, 0.1, 0.1);
[UIView animateWithDuration:0.3
animations:^{
_cardView.transform=CGAffineTransformIdentity;
}];
I have a view which I animate to make it seem as if it is expanding from a point (similar to the animation of an app being opened). This view is returned from [card initCard], with card being a custom class, and assigned to _cardView. Using CGAffineTransformScale I first decrease the scale and then animate the increase of the scale. This works perfectly for the first card that is shown. However, when _cardView is set to nil and a new card is assigned to it, the same transformation and animation code produce the wrong animation which makes the view increase in scale before decreasing. I assume that the problem is in making the scale 0.1,0.1 but I have not been able to solve this.
Setting to nil:
else if (sender.state == UIGestureRecognizerStateEnded || sender.state == UIGestureRecognizerStateCancelled || sender.state == UIGestureRecognizerStateFailed)
{
if(sender.view.center.x>0){
[UIView animateWithDuration:0.2 animations:^{
CGRect rect=[sender.view frame];
rect.origin.x=([self.view frame].size.width/2)-129.5;
[sender.view setFrame:rect];
sender.view.alpha = 0.8;
}];
}else{
[UIView animateWithDuration:0.5 animations:^{
_protoypeView.alpha=0.0;
_protoypeView=nil;
_cardView=nil;
[self nextCard];
}];
}
}
and function nextCard:
-(void)nextCard{
if(cardNumber>[questionArray count]-1){
NSLog(#"Out of cards");
}else{
QuestionCard *card=[[QuestionCard alloc]init];
NSArray* array =[[NSArray alloc]initWithArray:questionArray[cardNumber]];
card.questionString=array[3];
card.whenPosted=array[0];
card.isAnon=array[2];
card.user=array[1];
card.replies=array[4];
card.profileImg=array[5];
_cardView =[card initCard];
[self.view addSubview:_cardView];
_cardView.alpha=0.0;
_cardView.transform=CGAffineTransformScale(CGAffineTransformIdentity, -1, -1);
_cardView.transform=CGAffineTransformIdentity;
[UIView animateWithDuration:1 animations:^{
_cardView.alpha=0.7;
}];
UIPanGestureRecognizer * pan1 = [[UIPanGestureRecognizer alloc]initWithTarget:self action:#selector(handlePanImage:)];
pan1.minimumNumberOfTouches = 1;
[_cardView addGestureRecognizer:pan1];
yOfView=[_cardView frame].origin.y+([_cardView frame].size.height/2);
cardNumber++;
}
}
First case of CGAffineTransform (after successful query to Parse database):
[UIView animateWithDuration:0.5 animations:^{
_protoypeView.alpha=0.0;
}completion:^(BOOL finished){
QuestionCard *card=[[QuestionCard alloc]init];
NSArray* array =[[NSArray alloc]initWithArray:questionArray[cardNumber]];
card.questionString=array[3];
card.whenPosted=array[0];
card.isAnon=array[2];
card.user=array[1];
card.replies=array[4];
card.profileImg=array[5];
_cardView =[card initCard];
[self.view addSubview:_cardView];
_cardView.transform=CGAffineTransformScale(CGAffineTransformIdentity, 0.0, 0.0);
[UIView animateWithDuration:0.3
animations:^{
_cardView.transform=CGAffineTransformIdentity;
}];
UIPanGestureRecognizer * pan1 = [[UIPanGestureRecognizer alloc]initWithTarget:self action:#selector(handlePanImage:)];
pan1.minimumNumberOfTouches = 1;
[_cardView addGestureRecognizer:pan1];
yOfView=[_cardView frame].origin.y+([_cardView frame].size.height/2);
cardNumber++;
}];

Answer 1

Found the problem - [self nextCard] was called in animations, but should be called in completion.