@end #import "PageScrollView.h" @implementation PageScrollView - (void) touchesEnded: (NSSet *) touches self.dragging) { [self.nextResponder touchesEnded: touches withEvent:event]; } [super touchesEnded : touches withEvent: event]; } @end
根据不通的触摸状态,程序会调用相应的处理函数,这些函数包括以下几个: -(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent *)event; -(void)touchesMoved:(NSSet*)touches withEvent:(UIEvent *)event; -(void 对于这4个方法,都有两个相同的参数:NSSet类型的touches和UIEvent类型的event。其中touches表示触摸产生的所有UITouch对象,而event表示特定的事件。 * touch = [touches anyObject]; if (touch.tapCount == 1 ) { [self – ( void )touchesEnded:(NSSet * )touches withEvent:(UIEvent * ) event { UITouch
问题: warning: in the working copy of , LF will be replaced by CRLF the next time Git touches it warning
WPF Applications Stop Responding to Touches after Adding or Removing Tablet Devices plugging and unplugging a USB HID tablet device, you’ll get the WPF application which stops responding to touches
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) { var p = touches.anyObject ().locationInview(self) } 很多老教材都是这个方法来获取,touches.anyObject(), 可是最新的版本提示touches根本没有anyObject()这个方法了 1 let p = (touches as NSSet).anyObject()?.
参数中装着2个UITouch对象 如果这两根手指一前一后分开触摸同一个view,那么view会分别调用2次touchesBegan:withEvent:方法,并且每次调用时的touches参数中只包含一个 触摸事件 (1)手指按下事件 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event; - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event; (4)意外中断事件(如电话打扰 ) - (void)touchesCancelled:(nullable NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event; (5)3D触摸事件 - (void)touchesEstimatedPropertiesUpdated:(NSSet * _Nonnull)touches 2.
Git 行结束符:LF will be replaced by CRLF the next time Git touches it问题解决指南 摘要 大家好,我是猫头虎博主,今天我们来深入探讨一个在开发者社区里广为讨论的问题
[0].pageY * 2 }else { twoPoint.x1 = e.touches[0].pageX * 2 twoPoint.y1 = e.touches[0] .pageY * 2 twoPoint.x2 = e.touches[1].pageX * 2 twoPoint.y2 = e.touches[1].pageY * 2 { var onePointDiffX = e.touches[0].pageX * 2 - onePoint.x var onePointDiffY = e.touches[ [0].pageX * 2 onePoint.y = e.touches[0].pageY * 2 }else if (e.touches.length > 1) { var twoPoint.y1 = e.touches[0].pageY * 2 twoPoint.x2 = e.touches[1].pageX * 2 twoPoint.y2 = e.touches
= e.touches const { translateX, translateY } = this.data const { pageX, pageY } = touches[0] this.data.startMove touchMove(e) { const touches = e.touches const { pageX: onePageX, pageY: onePageY } = touches[0] = e.touches const { pageX: onePageX, pageY: onePageY } = touches[0] const { startMove, scale, distance = e.touches const { pageX: onePageX, pageY: onePageY } = touches[0] const { startMove, scale, distance (twoPageX - onePageX) ** 2 + (twoPageY - onePageY) ** 2) + let rotate = this.getAngle(touches[0], touches
= "show_touches"; 3. 开始阅读源码,打开 DevelopmentSettings.java 按以下阅读顺序, private static final String SHOW_TOUCHES_KEY = "show_touches 1 : 0); } 猜测 putInt 应该是一个数据传递的功能, 所以在framework里面搜 SHOW_TOUCHES 看看情况如何, 输入 grep -rn "SHOW_TOUCHES : VALIDATORS.put(SHOW_TOUCHES, SHOW_TOUCHES_VALIDATOR); 因为看不出有什么特殊操作,只是一些声明和 add 操作,所以忽略之。。。。。。 打开 InputReader.cpp ,在 CHANGE_SHOW_TOUCHES 中看不出啥东西,太费力了。
:YES]; } - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event{ [ super touchesMoved:touches withEvent:event]; } - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent :(nullable UIEvent *)event{ [super touchesEnded:touches withEvent:event]; [self setBackgroundHighlighted :NO]; } - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event{ [super touchesCancelled:touches withEvent:event]; [self setBackgroundHighlighted:NO]; } // 增大点击区域
eg:写一个category类目 UIScrollView + Event – (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { [super touchesBegan:touches withEvent:event]; [[[self nextResponder] nextResponder ] touchesBegan:touches withEvent:event]; } 应用场景: 操作:点击ScrollView上的textFiledView -> 再点击ScrollView 2.写一个category类目 UIScrollView + Event.h – (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:( ] touchesBegan:touches withEvent:event]; } 到此完美解决。
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] 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 :touches withEvent:event]; } 2.hittest - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
cc.eventManager.addListener({ event: cc.EventListener.TOUCH_ALL_AT_ONCE, onTouchesMoved:function (touches , event) { for (var i = 0; i < touches.length; i++) { jslog("touches :", i, touches[i].getLocation().x, touches[i].getLocation().y); } }, onTouchBegan:function (touches, event) { jslog("click", touches[0].getLocation().x, touches
:event]; } - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { NSLog(@ "vc, %s", __func__); [super touchesMoved:touches withEvent:event]; } - (void)touchesEnded:(NSSet :touches withEvent:event]; } - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { NSLog(@"vc, %s", __func__); [super touchesCancelled:touches withEvent:event]; } @ > *)touches withEvent:(UIEvent *)event { NSLog(@"%s", __func__); [super touchesEnded:touches
x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX); var y = 0.5 * (event.touches[0].pageY ) { if (event.touches.length == 1) { panStart.set(event.touches[0].pageX, event.touches[0].pageY = 0.5 * (event.touches[0].pageX + event.touches[1].pageX); var y = 0.5 * (event.touches[0].pageY * (event.touches[0].pageX + event.touches[1].pageX); var y = 0.5 * (event.touches[0].pageY + event.touches [0].pageX - event.touches[1].pageX; var dy = event.touches[0].pageY - event.touches[1].pageY;
&&o.touches.length)for(var r,c=o.touches.length-1;c>=0;c--)r=o.touches[c],r.x=r.pageX-u,r.y=r.pageY-i ,e.touches),n(s.touches[0]),s.touchstart&&s.touchstart(e),s.mousedown&&s.mousedown(e)}function r(e){e =a(e),o(s.touches,e.touches),n(s.touches[0]),s.touchmove&&s.touchmove(e),s.mousemove&&s.mousemove(e)} function c(e){if(e=a(e),e.touches.length)for(var n in A)e.touches[n]||delete A[n];else A={};s.touchend 0),o(s.touches,[e]),s.touchstart&&s.touchstart(e),s.mousedown&&s.mousedown(e)}function h(e){e=a(e),n(
新建一个类继承自UIScrollView 并重写下面的方法 -(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ [super touchesBegan:touches withEvent:event]; if ( ! self.dragging ) { [[self nextResponder] touchesBegan:touches withEvent:event]; } } -(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ [super touchesEnded:touches withEvent self.dragging ) { [[self nextResponder] touchesEnded:touches withEvent:event]; } }
:(NSSet *)touches withEvent:(UIEvent *)event 4个触摸事件处理方法中,都有NSSet *touches和UIEvent *event两个参数。 如果两根手指同时触摸一个view,那么view只会调用一次 touchesBegan:withEvent:方法,touches参数中装着2个UITouch对象。 如果这两根手指一前一后分开触摸同一个view,那么view会分别调用2次touchesBegan:withEvent:方法,并且每次调用时的touches参数中只包含一个UITouch对象 根据touches 调用最合适控件的touches….方法 如果调用了[super touches….];就会将事件顺着响应者链条往上传递,传递给上一个响应者。 方法监听view触摸事件 如果想监听一个view上面的触摸事件,之前的做法是: 自定义一个view 实现view的touches方法,在方法内部实现具体处理代码 通过touches方法监听view触摸事件
@interface myScrollView : UIScrollView @end myScrollView.m -(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ [super touchesBegan:touches withEvent:event]; if ( ! self.dragging ) { [[self nextResponder] touchesBegan:touches withEvent:event]; } } -(void ) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ [super touchesEnded:touches withEvent: self.dragging ) { [[self nextResponder] touchesEnded:touches withEvent:event]; } } 之後建立