y) } override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) { let p = (touches
:withEvent:], moveCount = 0 redColorView, -[RedView touchesMoved:withEvent:] -[CustomerGesture touchesMoved :withEvent:], moveCount = 1 redColorView, -[RedView touchesMoved:withEvent:] -[CustomerGesture touchesMoved :withEvent:], moveCount = 2 redColorView, -[RedView touchesMoved:withEvent:] -[CustomerGesture touchesMoved , -[RedView touchesMoved:withEvent:] redColorView, -[RedView touchesMoved:withEvent:] redColorView, - [RedView touchesMoved:withEvent:] redColorView, -[RedView touchesMoved:withEvent:] redColorView, -[RedView
ios事件-触摸事件3(UIButton 和 pointInSide()、hitTest()、touchesBegan()、touchesMoved()、touchesEnded()、touchesCancelled pointInSide()、hitTest()的关系:在button的hitTest()中返回button实例,这个button才能响应事件 2、button不同事件的识别,也是通过touchesBegan()、touchesMoved 其中UIControlEventTouchDown表示@selector(clicka:withEvent:)方法在Button的touchesBegan:withEvent:方法之后以及touchesMoved NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { NSLog(@"vc, %s", __func__); [super touchesMoved :(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { NSLog(@"%s", __func__); [super touchesMoved
touchesBegan: withEvent: / touchesMoved: withEvent: / touchesEnded: withEvent: 等只能被UIView捕获(如有问题请指出对请指出 当我们创建 UIScrollView 或 UIImageView 时,当点击时UIScrollView 或 UIImageView 会截获touch事件,导致touchesBegan: withEvent:/touchesMoved 事件后,让其传递下去即可(就是传递给其父视图UIView) 可以通过写UIScrollView 或 UIImageView 的category 重写touchesBegan: withEvent: / touchesMoved
搜索了一番,也没找到解决方案,最后自己各种猜测➕测试,得出一个解决方案:按钮点击事件改用 Tap 手势实现,扩展 UIView 在 touchesMoved 方法里判断手势方向是否为上滑。 实现 1、实现 touchesMoved ,并新增 touchPoint 属性记录每次 touch 位置,并跟上一次比较,y 比上一次小,就判断为上滑 2、新增 didReceiveSwipeUp 属性 MOAssociatedKeys.swipeUpCallbackKey, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) } } open override func touchesMoved { super.touchesMoved(touches, with: event) guard let touch = touches.first else { return
touchesBegan:touches withEvent:event]; [super touchesBegan:touches withEvent:event]; } -(void)touchesMoved :(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesMoved:touches withEvent :event]; [super touchesMoved:touches withEvent:event]; } -(void)touchesEnded:(NSSet *)touches withEvent
{ print(“touchesBegan”); } override func touchesMoved(_ touches:Set<UITouch>, with event:UIEvent?) { print(“touchesMoved”); } override func touchesEnded(_ touches:Set<UITouch>,with event:UIEvent?)
所以你想去两个手指的话这肯定不行,虽然编译器不会报错,但是一碰就死机 其实只要改个方法就行,用touchesMoved -(void )touchesMoved:(NSSet *)touches withEvent
这些函数包括以下几个: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; -(void)touchesMoved NSSet *)touches withEvent:(UIEvent *)event; 当手指接触屏幕时,就会调用touchesBegan:withEvent方法; 当手指在屏幕上移时,动就会调用touchesMoved UITouch *touch = [touches anyObject]; originalLocation = [touch locationInView:self.view]; } -(void)touchesMoved frame; } 这里先在touchesBegan中通过[touch locationInView:self.view]获取手指触摸在当前视图上的位置,用CGPoint变量记录,然后在手指移动事件touchesMoved
touchesBegan:touches withEvent:event]; [super touchesBegan:touches withEvent:event]; } - (void)touchesMoved :(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesMoved:touches withEvent :event]; [super touchesMoved:touches withEvent:event]; } - (void)touchesEnded:(NSSet *)touches withEvent
[super touchesBegan:touches withEvent:event]; [self setBackgroundHighlighted:YES]; } - (void)touchesMoved :(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event{ [super touchesMoved:touches withEvent
这些函数包括以下几个: -(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent *)event; -(void)touchesMoved toucheswithEvent:(UIEvent *)event; 当手指接触屏幕时,就会调用touchesBegan:withEvent方法; 当手指在屏幕上移时,动就会调用touchesMoved touches anyObject]; originalLocation = [touch locationInView:self.view]; } – ( void )touchesMoved 这里先在touchesBegan中通过 [touch locationInView : self . view ] 获取手指触摸在当前视图上的位置,用CGPoint变量记录,然后在手指移动事件touchesMoved
touchesBegan 是你的手指和屏幕之间的第一次接触 touchesMoved 是你在屏幕上滑动手指 touchesEnded 是你从屏幕上移开手指的那一刻 让我们通过为每个扩展创建一个方法, touchesMoved 让我们回到我们的touchesMoved覆盖方法并填写一些代码。在那里,我们需要声明我们的操纵杆实际上是一个操纵杆,或者什么都不做并退出方法。 就在touchesMoved的最后一行代码之后,让我们声明距离的变量。我们将使用毕达哥拉斯理论来计算旋钮的初始点到我们要握住它的点之间的距离。
一次完整的触摸过程,会经历3个状态: 触摸开始:- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 触摸移动:- (void)touchesMoved 主窗口会在视图层次结构中找到一个最合适的视图来处理触摸事件,但是这仅仅是整个事件处理过程的第一步 找到合适的视图控件后,就会调用视图控件的touches方法来作具体的事件处理 touchesBegan… touchesMoved touchesBegan… touchesMoved… touchedEnded… 这些touches方法的默认做法是将事件顺着响应者链条向上传递,将事件交给上一个响应者进行处理 这里写图片描述 如何判断上一个响应者
pan.cancelsTouchesInView = NO; // pan.delaysTouchesBegan = YES; [self.view addGestureRecognizer:pan]; } -(void)touchesMoved withEvent:消息在其时间传递链上,终止触摸事件的传递,也就是说默认当识别到手势时,touch事件传递的方法将被终止而不执行,如果设置为NO,touch事件传递的方法仍然会被执行,上例中我们使用了拖拽手势和touchesMoved pan.cancelsTouchesInView = YES 我们发现touchesMoved的方法仍然被调用了,这是为什么呢? pan.delaysTouchesBegan = YES; 因为此时在拖拽手势识别失败之前,都不会给时间传递链发送消息,所以就不会在调用touchesMoved触发事件了 而delaysTouchesEnded – touchesBegan:withEvent: – touchesMoved:withEvent: – touchesEnded:withEvent: - touchesCancelled
62416 (CanvasView.swift:231) 2 TouchCanvas 0x0000000102af7d10 ViewController.touchesMoved compiler-generated>:0) 3 TouchCanvas 0x0000000102af80b8 @objc ViewController.touchesMoved 0x00000001ba9d8da4 forwardTouchMethod + 328 5 UIKitCore 0x00000001ba9d8e40 -[UIResponder touchesMoved 0x00000001ba9d8da4 forwardTouchMethod + 328 7 UIKitCore 0x00000001ba9d8e40 -[UIResponder touchesMoved
核心就在于给每个节点View添加一个TouchesMoved事件,然后在TouchesMoved事件执行时,将触摸的移动点设置成当前View的Center即可。这样我们就可以拖动每个节点View了。 下方这段就是节点View的TouchesMoved事件,在该事件中我们获取到当前用户触摸移动的坐标点,然后将该点赋值给当前节点View的Center,然后调用更新父视图的闭包回调对象即可。 下方的这两个方法会替换掉第一部分的TouchesMoved方法。下方的randomIncrement()方法用来生成当前View的x坐标和y坐标的偏移量。
手绘板.gif 原理思路 在touchesBegan 方法中,每次都创建一个CAShapeLayer加载在当前视图的layer上,在touchesMoved方法中改变该 CAShapeLayer 基于UIBezierPath removeAllObjects]; [[self mutableArrayValueForKey:@"lines"] addObject:_slayer]; } } - (void)touchesMoved
override func touchesMoved(_ touches:Set<UITouch>, with event:UIEvent?)
学习记录--toches、Motion/Size/Rect/Point/CGFloat/protocol - (void)touchesBegan touchesEnd touchesCancelled touchesMoved