Execute animation of subview subclass - ios

Question

I have a UIViewController called ParentViewController.
And i have a UIView custom class called CustomView. It including some ImageView and the function to execute animation.
CustomView.h
#interface CustomView : UIView
#property (weak, nonatomic) IBOutlet UIImageView *human;
#property (weak, nonatomic) IBOutlet UIImageView *shadow;
+ (id)CustomView;
- (void)executeAnimation;
#end
And in CustomView.m i ave executeAnimation as the following:
-(void)executeAnimation{
self.animation1InProgress = YES;
[UIView animateKeyframesWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
} completion:^(BOOL finished){
self.animation1InProgress = NO;
}];
}
Now in ParentViewController.m, i add CustomView without any animation
//init custom
customView = [CustomView initCustomView];
[self.view addSubview:centerLocationView];
This code is OK. I could init and addSubview to ParentViewController.
But whenever i would like to execute animation about CustomView. I call the following coding in ParentViewController.m:
[customView executeAnimation];
There is nothing changed at Parent View.
Is anybody know the way to execute this animation at ParentViewController?
Thank in advance.

Answer 1

If you really want to use +[UIView animateKeyframesWithDuration:delay:options:animations:completion:], you should add keyframes to your animations block:
-(void)executeAnimation{
self.animation1InProgress = YES;
[UIView animateKeyframesWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
[UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:1.0 animations:^{
self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
}];
} completion:^(BOOL finished){
self.animation1InProgress = NO;
}];
}
Otherwise, just use [UIView animateWithDuration:animations:completion:]:
-(void)executeAnimation{
self.animation1InProgress = YES;
[UIView animateWithDuration:3.0 delay:0.0 options:UIViewAnimationCurveLinear animations:^{
self.human.frame = CGRectMake(self.human.frame.origin.x, self.human.frame.origin.y + 300, self.human.frame.size.width, self.human.frame.size.height);
} completion:^(BOOL finished){
self.animation1InProgress = NO;
}];
}