UIButton can't be touched while animated with

Question

I have the following code:

[UIView animateWithDuration:0.3
                      delay:0.0
                    options:UIViewAnimationCurveEaseOut | UIViewAnimationOptionAllowUserInteraction
                 animations:^{
                     CGRect r = [btn frame];
                     r.origin.y -= 40;
                     [btn setFrame: r];
                 }
                 completion:^(BOOL done){
                     if(done){
                         [UIView animateWithDuration:0.3
                                               delay:1
                                             options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction
                                          animations:^{
                                              CGRect r = [btn frame];
                                              r.origin.y += 40;
                                              [btn setFrame: r];
                                          }
                                          completion:^(BOOL done){if(done) zombiePopping = 0; }];
                     }

                 }];

The problem is, it seems the button doesnt respond to touches while being animated even though i'm using UIViewAnimationOptionAllowInteraction, which is a bit weird to me.

Maybe this most be done with Core Animation to work? and if so, how would i go about that?

Answer 1

In my case, I set superView.alpha = 0, it stops interaction of button although I setup UIViewAnimationOptionAllowUserInteraction .

Solution? Easy, just reduce alpha to 0.1 instead of 0

[UIView animateWithDuration:durationTime delay:0 options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionOverrideInheritedOptions | UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionRepeat | UIViewAnimationOptionAutoreverse animations: ^{
            superView.alpha = 0.1; // 0.0 will make the button unavailable to touch
        } completion:nil];

Answer 2

Swift 3.0 Create a superview on top in viewdidload

let superView = UIView(frame: view.frame)
    superView.isUserInteractionEnabled = true
    superView.backgroundColor = UIColor.clear
    superView.alpha = 0.1
    view.addSubview(superView)

now implement touchesbagan like this

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {

    guard let touch = (touches as NSSet).anyObject() as? UITouch else {
        return
    }

    let touchLocation = touch.location(in: self.view)
    if btnone.layer.presentation()?.hitTest(touchLocation) != nil {
        print("1") // Do stuff for button 
    }
    if btntwo.layer.presentation()?.hitTest(touchLocation) != nil {
        print("2") // Do stuff
    }
    if btnthree.layer.presentation()?.hitTest(touchLocation) != nil {
        print(3) // Do stuff
    }
    if btnfour.layer.presentation()?.hitTest(touchLocation) != nil {
        print(4) // Do stuff
    }
}