UIView animation not work - ios

Question

I'd like to make settingView on myView display and disappear with animation.
I call -showSettingView
if (!self.settingView) : the animation correctly work.
But, else if (self.myView) : settingView disappear WITHOUT animation.
How do I fix it to make settingView disappear with animation?
#property (nonatomic, strong) UIView *myView;
#property (nonatomic, strong) UIView *settingView;
- (void)viewDidLoad
{
[super viewDidLoad];
UIBarButtonItem* settingButton = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:#selector(showSettingView)];
self.navigationItem.rightBarButtonItem = settingButton;
}
- (void)showSettingView
{
self.myView = [[UIView alloc]initWithFrame:CGRectMake(0, 568, 320, 480)];
self.myView.opaque = NO;
self.myView.backgroundColor = [UIColor colorWithWhite:1.0f alpha:0.0f];
[self.view addSubview:self.myView];
if (!self.settingView) {
self.settingView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];
self.settingView.backgroundColor = [UIColor blackColor];
[self.myView addSubview:self.settingView];
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionTransitionFlipFromBottom
animations:^{self.myView.frame = CGRectMake(0, 60, 320, 480);}
completion:^(BOOL finished) {}
];
} else if (self.myView){
self.myView.frame = CGRectMake(0, 60, 320, 480);
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionCurveEaseIn
animations:^{self.myView.frame = CGRectMake(0, 568, 320, 480);}
completion:^(BOOL finished) {}
];
[self.settingView removeFromSuperview];
self.settingView = nil;
[self.myView removeFromSuperview];
}
}
Thank you.

Answer 1

You dealloc the settings view before the animation starts. Try this:
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionCurveEaseIn
animations:^{self.myView.frame = CGRectMake(0, 568, 320, 480);}
completion:^(BOOL finished) {
[self.settingView removeFromSuperview];
self.settingView = nil;
[self.myView removeFromSuperview];
}
];
*Also: If you are using auto layout you need to do one of these options:
A. Set the constrains of myView instead of the frame, before the block, and then call only layoutIfNeeded: inside the block.
B. Set the transform property in the animation block.

Answer 2

Try adding this line
[self layoutIfNeeded];
as the last line within your animation block. Something like that:
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionTransitionFlipFromBottom
animations:^{
self.myView.frame = CGRectMake(0, 60, 320, 480);
// any other stuff you have to move
[self layoutIfNeeded];
}
completion:^(BOOL finished) {}
];