animateWithDuration和touchesBegan不成对使用

当我的对象在屏幕上移动时，我需要处理触摸。 当touchesBegan调用我需要隐藏我的对象。

这是我在UIViewController中的代码：

- (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

也许你错过了AllowAnimatedContent。 尝试改变你的

UIViewAnimationOptionAllowUserInteraction

至

UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionAllowAnimatedContent

---

…另一种方式可能是使用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

如果需要检测与对象的交集，则还需要检查这一点。

我编辑了touchesBegan方法，它的工作原理。

 - (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 } } } 

如果你使用UIImageView对象的CALayer来做这个工作是正确的。 检查这个答案链接