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Masked zoom masks are too fast, not displayable

I am trying to make an image with a mask in the form of a circle with an animated mask and it plays with various solutions. The example below does the job, but I have two problems:

1) Why ca n't I make the image tappable ? Addition, for example. a UITapGestureRecognizerdoes not work. I assume that the mask prevents sensory actions from spreading to a lower level in the view hierarchy.

2) The mask animation is very fast and I can’t adjust the duration using the block animationUIView

How can I solve these problems?

- (void) addCircle {
    // this is the encapsulating view
    //
    base = [[UIView alloc] init];
    //
    // this is the button background
    //
    base_bgr = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"c1_bgr.png"]];
    base_bgr.center = CGPointMake(60, 140);
    [base addSubview:base_bgr];
    //
    // icon image
    //
    base_icon = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"c1_ico.png"]];
    base_icon.center = CGPointMake(186*0.3/2, 182*0.3/2);
    base_icon.transform = CGAffineTransformMakeScale(0.3, 0.3);
    [base addSubview:base_icon];
    //
    // the drawn circle mask layer
    //
    circleLayer = [CAShapeLayer layer];
    // Give the layer the same bounds as your image view
    [circleLayer setBounds:CGRectMake(0.0f, 0.0f, [base_icon frame].size.width,
                                      [base_icon frame].size.height)];
    // Position the circle
    [circleLayer setPosition:CGPointMake(186*0.3/2-7, 182*0.3/2-10)];
    // Create a circle path.
    UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:
                          CGRectMake(0.0f, 0.0f, 70.0f, 70.0f)];
    // Set the path on the layer
    [circleLayer setPath:[path CGPath]];

    [[base layer] setMask:circleLayer];

    [self.view addSubview:base];
    base.center = CGPointMake(100, 100);
    base.userInteractionEnabled = YES;
    base_bgr.userInteractionEnabled = YES;
    base_icon.userInteractionEnabled = YES;

    //
    // NOT working: UITapGestureRecognizer
    //
    UITapGestureRecognizer *tapgesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapit:)];
    [base_icon addGestureRecognizer:tapgesture];

    //
    // BAD but WORKS :) properly positioned UIButton over the masked image
    //
    base_btn = [UIButton buttonWithType:UIButtonTypeCustom];
    base_btn.frame = CGRectMake(base.frame.origin.x, base.frame.origin.y, base_icon.frame.size.width, base_icon.frame.size.height);
    [base_btn addTarget:self action:@selector(tapit:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:base_btn];
}

, . , , - 0,25 , .

- (void) tapit:(id) sender {
    //...
        [UIView animateWithDuration:1.0
                              delay:0.0
                            options:UIViewAnimationOptionCurveEaseOut
                         animations:^ {
                             [circleLayer setTransform:CATransform3DMakeScale(10.0, 10.0, 1.0)];
                         }
                         completion:^(BOOL finished) {
                             // it is not necessary if I manage to make the icon image tappable
                             base_btn.frame = [base convertRect:base_icon.frame toView:self.view];  
                         }];
    }    
}
+4
1

1) base, , CGRectZero. , . base, .

2) setTransform: , 0.25 ( , :)). CABasicAnimation , UIView. - :

CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
scaleAnimation.toValue = @(10.0f);
scaleAnimation.duration = 2;
[circleLayer addAnimation:scaleAnimation forKey:nil];

: CABasicAnimation , , . , , removedOnCompletion NO , CALayer removeAnimationForKey: ( nil, ), , .

+1

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