animateWithDuration and touchesBegan don't work in pair - ios

Question

I need to handle touch on my object when it move across my screen. When touchesBegan called I need to hide my object.
this is my code in UIViewController:
- (void)win {
for (NSInteger i = 1; i <= 6; i++) {
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:#"rocket_%d.png", i]]];
imageView.tag = 1000;
CGSize size = imageView.image.size;
[imageView setFrame:CGRectMake(200 + (i * 60), 500, size.width, size.height)];
[self.view addSubview:imageView];
[rockets addObject:imageView];
[imageView setUserInteractionEnabled:YES];
}
[self startRockets];
}
- (void)startRockets {
CGFloat timeInterval = 1.0;
for (UIImageView *imageView in rockets) {
[UIView animateWithDuration:5.0 delay:timeInterval options:UIViewAnimationOptionAllowUserInteraction animations:^{
[imageView setFrame:CGRectMake(imageView.frame.origin.x, 0, imageView.frame.size.width, imageView.frame.size.height)];
} completion:nil];
timeInterval += 1.0;
}
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
NSArray *views = [self.view subviews];
for (UIView *v in views) {
if (v.tag == 1000) {
if (CGRectContainsPoint(v.frame, touchLocation) == YES) {
[v setHidden:YES];
}
}
}
}

Answer 1

Maybe you are missing the AllowAnimatedContent. Try changing your
UIViewAnimationOptionAllowUserInteraction
to
UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionAllowAnimatedContent
...another way might be to use UITapGestureRecognizer :
- (void)createViews {
rockets = [[NSMutableArray alloc] init];
for (NSInteger i = 1; i <= 6; i++) {
UIView *view = [UIView new];
view.backgroundColor = [UIColor redColor];
view.frame = CGRectMake((i * 60), 100, 50, 50);
UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(rocketTouched:)];
[view addGestureRecognizer:tap];
[self.view addSubview:view];
[rockets addObject:view];
}
[NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:#selector(moveViews) userInfo:nil repeats:YES];
}
- (void)moveViews {
for (UIView * view in rockets) {
[UIView animateWithDuration:5.0 delay:0.0 options:UIViewAnimationOptionAllowUserInteraction|UIViewAnimationOptionAllowAnimatedContent animations:^{
view.frame = CGRectMake(view.frame.origin.x -10, 0, view.frame.size.width, view.frame.size.height);
} completion:nil];
}
}
- (void)rocketTouched:(UITapGestureRecognizer*)tap {
tap.view.hidden = YES;
}

Answer 2

You need also check this if you need to detect intersection with object.
I have edited touchesBegan method and it works.
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
for (UIImageView *imageView in rockets) {
CALayer *bbl1ObjPresentationLayer = (CALayer*)[imageView.layer presentationLayer];
if(CGRectIntersectsRect(bbl1ObjPresentationLayer.frame, CGRectMake(touchLocation.x, touchLocation.y, 1, 1))) {
NSLog(#"intersect");
//They are intersecting
}
}
}
if you do it using CALayer insted of UIImageView object this work correct. Check this answer link