Completion block for graphics animation - ios

Question

My problem is that I've 2 graphics animation one after the other, but they are done together.
I thought to write a method with completion block, but or I'm doing something wrong, or there is another way to do this.
The animation is a uiview that move out of the screen (closeView) and the default animation of viewcontroller closing.
I want the viewcontroller closes when is over the animation of view.
This is what i've done
- (void)closeViewWithCompletion:(void (^) (BOOL finish))handler {
[self closeView];
handler(YES);
}
-(void) closeView{
[self.myview setFrame:CGRectMake(
-self.myview.frame.size.width
, self.myview.frame.origin.y
, self.myview.frame.size.width
, self.view.frame.size.height
)];
CATransition *animation = [CATransition animation];
[animation setType:kCATransitionPush];
[animation setSubtype:kCATransitionFromRight];
[animation setDuration:.50];
[animation setDelegate:self];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
CALayer *layer = [self.myview layer];
[layer addAnimation:animation forKey:nil];
[UIView animateWithDuration:0.5 animations:^{
[greyMask setBackgroundColor:[UIColor colorWithWhite:0.0 alpha:0]];
} completion:^(BOOL finished) {
[greyMask removeFromSuperview];
}];
}
use:
[vc closeViewWithCompletion:^(BOOL finish) {
[navController popViewControllerAnimated:true];
}
];

Answer 1

call your handler block in completionBlock after your closeView Animation finishes.
- (void)closeViewWithCompletion:(void(^)(BOOL finish))handler {
//closeView Animation
[UIView animateWithDuration:duration delay:0 options: UIViewAnimationOptionCurveEaseOut animations:^{
//code for close view animation
} completion:^(BOOL finished) {
handler(YES) //call your handler in completion block
}];
}
[vc closeViewWithCompletion:^(BOOL finish) {
[self.navigationController popViewControllerAnimated:true];
}];