App内:子线程接收事件->主线程封装事件->UIWindow启动hitTest确定目标视图->UIApplication开始发送事件->touch事件开始回调。...UIKit寻找目标视图的过程 寻找的过程主要依赖两个UIView的方法:-hitTest:withEvent方法和-pointInsdie:withEvent方法。...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event hitTest方法返回point和event对应的视图; - (BOOL)pointInside...:(CGPoint)point withEvent:(UIEvent *)event pointInside方法返回point和event是否在自己当前视图上; 这两个方法UIView都提供了默认实现,...UIWindow是UIView的子类,UIView的hitTest方法实现和上述过程一致。 思考: UIView在调用子视图hitTest时,是先调用哪些子视图?
每次点击发生的时候,点击对象都放在一个集合中传入UIResponder的回调方法中,我们通过集合中对象获取用户点击的位置。...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event; //判断当前点击事件是否存在最优响应者(First Responder)...我们可以重写view的-(UIView )hitTest:(CGPoint)point withEvent:(UIEvent)event方法来测试 #import "UIView+MYtes.h" #import...__); return [self wcq_hitTest:point withEvent:event]; } 然后我们分别新建三个UIView的子类: AView、BView、CView并依次按顺序添加到...,然后在调用hitTest: withEvent:依次获取处理这个事件的所有视图对象,在获取所有的可处理事件对象后,开始调用这些对象的touches回调方法 在自定义View中重写 touchesBegan
手势和pointInSide()以及hitTest()的关系:必须先通过pointInSide()和hitTest()找到的view(即处理事件的view),才能响应view的手势事件。 2....- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { NSLog(@"%@, %s", self.bgColorString...= 13 //识别出不是点击手势了,所以[CustomerGesture touchesMoved:withEvent:]就不会再被调用了。...NO表示手势识别出来,不cancel掉view的touch方法的回调 gesture.cancelsTouchesInView = NO; //只是添加了这一行代码!!!!!!!!!!...中添加了gesture.cancelsTouchesInView = NO;,即告诉系统说手势识别出来后,不要cancel掉view的touch方法的回调,所以RedView的touchesMoved:
: @"View Flip" context: nil]; //动画持续时间 [UIView setAnimationDuration: 1.25]; //设置动画的回调函数,设置后可以使用回调方法...) hitTest: (CGPoint)point withEvent: (UIEvent*)event{ UIView *result = [super hitTest: point withEvent...简而言之,可以写成这样 [st_hitTest: withEvent:] - (UIView*) hitTest: (CGPoint)point withEvent: (UIEvent*)event{...*)hitTest: (CGPoint)point withEvent: (UIEvent*)event{ UIView *hitView = [super hitTest: point withEvent...上的触摸操作返回的hit-test view为scrollview,button无法响应,可以修改topView的hitTest:withEvent:方法如下: - (UIView*)hitTest:(
,事件都会先传递给这个控件,随后再调用hitTest:withEvent:方法 拦截事件的处理 正因为hitTest:withEvent:方法可以返回最合适的view,所以可以通过重写hitTest:withEvent...但是,建议在父控件的hitTest:withEvent:中返回子控件作为最合适的view! 原因在于在自己的hitTest:withEvent:方法中返回自己有时候会出现问题。...控制器的view的hitTest:withEvent:方法return nil或者window的hitTest:withEvent:方法return self return nil的含义: hitTest...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{ UIView *view = [super hitTest:point...3、在事件的响应中,如果某个控件实现了touches...方法,则这个事件将由该控件来接受,如果调用了[super touches….]
window对象会在首先在view hierarchy的顶级view上调用hitTest:withEvent:,此方法会在视图层级结构中的每个视图上调用pointInside:withEvent:,如果...hitTest:withEvent:方法的处理流程如下: •首先调用当前视图的pointInside:withEvent:方法判断触摸点是否在当前视图内; •若返回NO,则hitTest:withEvent...【原】ios的hitTest方法以及不规则区域内触摸事件处理方法 http://www.cnblogs.com/wengzilin/p/4249847.html hitTest:withEvent:...view为scrollview,button无法响应,可以修改topView的hitTest:withEvent:方法如下: - (UIView*)hitTest:(CGPoint)point withEvent...:withEvent:方法流程 http://blog.csdn.net/jiajiayouba/article/details/23447145 iOS的UIView的hitTest的分析 http
简而言之,可以写成这样 [st_hitTest:withEvent:] - (UIView*)hitTest:(CGPoint)pointwithEvent:(UIEvent*)event{ if...Category如下 [UIView+HitTest.h] /** * @abstract hitTestBlock * * @param其余参数参考UIView hitTest:withEvent...*这个方法就是hitTest:withEvent的一个代替。...(st_pointInside:withEvent:))); } - (UIView*)st_hitTest:(CGPoint)pointwithEvent:(UIEvent*)event{ NSMutableString...我们有时候会遇到一些问题,比如我们重写了motionEvents,但是我们不能收到摇一摇的回调,或者我们的UIMenuController老是不弹出,我们就需要检查一下,我们是否满足了如上所示的条件,而且要确保
-(id)hitTest:(CGPoint)pointwithEvent:(UIEvent *)event { UIView *hitView= [super hitTest:point withEvent...:withEvent:方法的处理流程如下: 首先调用当前视图的pointInside:withEvent:方法判断触摸点是否在当前视图内; 若返回NO,则hitTest:withEvent:返回nil;...若返回YES,则向当前视图的所有子视图(subviews)发送hitTest:withEvent:消息,所有子视图的遍历顺序是从top到bottom,即从subviews数组的末尾向前遍历,直到有子视图返回非空对象或者全部子视图遍历完毕...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { // 1.判断当前控件能否接收事件 if (self.userInteractionEnabled...:point toView:childView]; // 寻找到最合适的view UIView *fitView = [childView hitTest:childP
,能够处理touchesBegan等触摸事件 当一个Touch事件产生时,要先找到响应者,iOS通过Hit-Test机制来寻找响应者,每一个UIView(继承自UIResponder)都有以下的方法 -...(nullable UIView *)hitTest:(CGPoint)point withEvent:(nullable UIEvent *)event; HitTest的顺序 UIApplication...UIApplication和UIWindow通过sendEvent:方法传递事件 UIWindow 之后会通过hitTest:withEvent:方法寻找触碰点所在的视图 hitTest:withEvent...:原理 // point是该视图的坐标系上的点 - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { // 1.判断自己能否接收触摸事件...= [childView hitTest:childPoint withEvent:event]; if (fitView) { return fitView;
(1)查找阶段: 先介绍UIView的两个方法: - (BOOL)pointInside:(CGPoint)point withEvent:(nullable UIEvent *)event; 该方法用于检查当前坐标是否落在当前...view - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event 该方法的主要逻辑是: 检查当前view是否能响应事件(userInteractionEnabled...执行hitTest:withEvent:; 如果subView的hitTest:withEvent:有返回,则返回该返回; 如果subView的hitTest...(UIWindow); 主窗口会调用hitTest:withEvent:方法在视图(UIView)层次结构中找到一个最合适的UIView来处理触摸事件,并将UITouch与UIEvent交给UIView...(2)事件响应阶段(响应链): 在上面提到的查找阶段,通过hitTest:withEvent:最终查找到的最后view自然就做为第一个可以响应该事件的view,当该view不能处理该事件,系统会通过nextResponder
可以在view1中重写hitTest方法,在这里直接拦截返回self,这样的话view5便不会响应事件了,但是与此同时view1的子view也不会响应事件了。...所以最好是再view5上边在嵌套一个view -(UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{ // 如果在当前 view...要想让a响应橙色区域,那么就要重写父视图的pointinside或者hitTest方法,让pointInside返回yes或者让hitTest返回橙色的view - (UIView *)hitTest:...withEvent:event]) { return [super hitTest:point withEvent:event]; } // 如果触摸点不在范围内...方法返回的值 UIView * view = [subview hitTest:newPoint withEvent:event]; // 如果子视图返回一个view
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。...接着就会调用上一个响应者的touches….方法 2.3 模拟系统的hitTest方法原理 /* hitTest : withEvent: 作用:找做合适的view;当事件传递给一个控件的时候调用...*/ - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{ NSLog(@"%s",__func...__); // [super hitTest:point withEvent:event];//使用系统默认做法 //1、判断自己能否接受事件 if (self.userInteractionEnabled...:point toView:childView]; UIView *fitView = [childView hitTest:childPoint withEvent:event]
pointInside:withEvent:返回NO,对应的hitTest:withEvent:返回nil; 点击的范围在C内,即C的pointInside:withEvent:返回YES;这时候有D和...E两个分支:点击的范围再D view内,因此D view的pointInside:withEvent:返回YES,对应的hitTest:withEvent:返回DView; 代码验证 新建一个BaseView...基类 #import "BaseView.h" @implementation BaseView - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent...:point toView:childView]; // 寻找到最合适的view UIView *fitView = [childView hitTest:childP...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { if (self.isHidden == NO) {
#import @interface UIButton (FRWExtend) /** 更改按钮的触控响应区域 @param edge e.g. edge为UIEdgeInsetsMake...:withEvent:), @selector(es_hitTest:withEvent:)); }); } - (void)setTouchEdge:(UIEdgeInsets)edge {...self.frw_edge = edge; } #pragma mark - overload - (UIView *)es_hitTest:(CGPoint)point withEvent...(self.bounds)/2.0); return [self es_hitTest:center withEvent:event]; } else {...return [self es_hitTest:point withEvent:event]; } } #pragma mark - get & set - (UIEdgeInsets
iOS中,Hit-Test的作用就是找出这个触摸点下面的View是什么,HitTest会检测这个点击的点是不是发生在这个View上,如果是的话,就会去遍历这个View的subviews,直到找到最小的能够处理事件的...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event; - (BOOL)pointInside:(CGPoint)point withEvent...具体实现 - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event { // 1.判断当前控件能否接收事件 if (self.userInteractionEnabled...判断点在不在当前控件 if ([self pointInside:point withEvent:event] == NO) {return nil;} // 3.从后往前遍历自己的子控件...:point toView:childView]; // 寻找到最合适的view UIView *fitView = [childView hitTest:childP
大家好,又见面了,我是你们的朋友全栈君。 1....:touches withEvent:event]; [super touchesBegan:touches withEvent:event]; } -(void)touchesMoved:(...NSSet *)touches withEvent:(UIEvent *)event { [[self nextResponder] touchesMoved:touches withEvent...:touches withEvent:event]; } 2.hittest - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event...{ UIView *hitView = [super hitTest:point withEvent:event]; if (hitView == self)
给一个大概的流程图,明杰老师的; 739006-20160912134713336-1609212026.png 下面就说说我们这个hit-Testing,在UIView中,有这样两个需要你特别注意的方法...; - (nullable UIView *)hitTest:(CGPoint)point withEvent:(nullable UIEvent *)event; // recursively calls...当中,RootView 收到hitTest消息, 先调用RootView的pointInside:withEvent方法,判断点击的点是不是在RootView中,上面的例子是在RootView中,所以pointInside...就会调用自己的 hitTest 方法,并且返回的UIView就是自己 View2。...739006-20160912151637070-1139499859.png 中间这一块的处理代码如下: -(UIView *)hitTest:(CGPoint)point withEvent:(UIEvent
SSTouchTextField #pragma mark - Private - (void)setBackgroundHighlighted:(BOOL)highlighted{ [UIView...super touchesMoved:touches withEvent:event]; } - (void)touchesEnded:(NSSet *)touches withEvent...- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{ CGPoint convertPoint = [self convertPoint...(CGRectContainsPoint(convertFrame, convertPoint)) { return self; } return [super hitTest...:point withEvent:event]; } @end
事件的分发和传递。 1.当iOS程序中发生触摸事件后,系统会将事件加入到UIApplication管理的一个任务队列中 2.UIApplication将处于任务队列最前端的事件向下分发。...3.UIWindow将事件向下分发,即UIView。 4.UIView首先看自己是否能处理事件,触摸点是否在自己身上。如果能,那么继续寻找子视图。 5.遍历子控件,重复以上两步。...其中 UIView不接受事件处理的情况主要有以下三种 1)alpha <0.01 2) userInteractionEnabled = NO 3)hidden = YES 4)hitTest...:withEvent: 返回nil // 此方法返回的View是本次点击事件需要的最佳View - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent...*)event // 判断一个点是否落在范围内 - (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event 事件传递是从下到上的
注意,不能够重写父控件的hitTest:withEvent:方法,也就是不能够重写红色的view的hitTest:withEvent:方法。...#import "GreenView.h" @implementation GreenView - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent...NSLog(@"RedView %s",__func__); } - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {...随后,我又重写了绿色的view的hitTest:withEvent:方法,返回红色的view。但是,点击非重叠区,没响应。...withEvent:(UIEvent *)event { NSLog(@"redView %s",__func__); } - (UIView *)hitTest:(CGPoint)point