UIButton单击事件未触发其他子视图

Question

On my SplashScreenViewController , I have a series of sequenced animations that hide and display views via cross-dissolves. There is also a button that is present throughout to allow the user to skip out of this. However, the button is not responding to its touch up inside event. If I tap on it rapidly, sometimes I can get it to fire, but rarely.

I assume that this is a result of what I am doing to the other UIViews and that the touch is being absorbed by them.

Each of the other subviews has User Interaction Enabled set to false (unchecked in the IB). The button is presented last in the IB, which should make it the top view. I also add the following code just in case:

_btnAlreadyRegistered.hidden = NO;
[[UIApplication sharedApplication].keyWindow bringSubviewToFront:_btnAlreadyRegistered];
_btnAlreadyRegistered.enabled = YES;

Here is an example of one of the methods that executes the animation. Each of the various fade in / fade out animations follows this same pattern:

- (void) fadeOutHello {

    _btnAlreadyRegistered.hidden = NO;
    [[UIApplication sharedApplication].keyWindow bringSubviewToFront:_btnAlreadyRegistered];
    _btnAlreadyRegistered.enabled = YES;

    [UIView transitionWithView:[self view]
                      duration:CROSS_FADE_DURATION_3
                       options:UIViewAnimationOptionTransitionCrossDissolve
                    animations:^{_grayView.hidden = YES;}
                    completion:^(BOOL finished){[self fadeInGetRegistered];}
     ];
}

Answer 1

Try UIViewAnimationOptionTransitionCrossDissolve | UIViewAnimationOptionAllowUserInteraction UIViewAnimationOptionTransitionCrossDissolve | UIViewAnimationOptionAllowUserInteraction