有没有办法在iPhone上通过触摸？

Question

UIButton在主区域中点击时，我使用几个s来设置当前动作。我还想允许用户从按钮直接拖动到主要区域并执行相同的操作；本质上，在触摸UIButton时应将touchesBegan和touchesMoved传递给主视图，还应发送按钮按下动作。

现在，我可以更改控件了。拖动出口将调用内部触摸区域以设置控件，然后调用触摸开始区域以开始主区域触摸操作。

但是，此时，touchesMoved和touchesEnded显然没有被调用，因为触摸起源于UIButton。

有没有一种方法可以半忽略触摸，以便将它们传递到主区域，还可以让我先设置控件？

Answer 1

在文档中，查找“ 响应者对象”和“响应者链”您可以通过转发响应者链上的修饰来“共享”对象之间的修饰。您的UIButton有一个接收UITouch事件的响应器/控制器，我的猜测是，一旦它对返回的消息执行了正确的解释-触摸已被处理和处置。苹果公司建议这样的事情（当然取决于触摸的类型）：[self.nextResponder touchesBegan:touches withEvent:event];而不是处理触摸事件，而是将其传递出去。子类UIButton：MyButton.h#import <Foundation/Foundation.h>@interface MyButton : UIButton {}- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event ;@end我的按钮#import "MyButton.h"@implementation MyButton- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {&nbsp;&nbsp;&nbsp; &nbsp; printf("MyButton touch Began\n");&nbsp; &nbsp; [self.nextResponder touchesBegan:touches withEvent:event];&nbsp;}@end

Answer 2

我知道这个问题已经有两年了（并且已经回答了），但是...当我自己尝试时，触摸被转发了，但是按钮不再像按钮那样表现。我也将修饰传递给“超级”，现在一切都很好。因此，对于可能偶然发现此问题的初学者，代码应如下所示：- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {&nbsp;&nbsp;&nbsp; &nbsp; [super touchesBegan:touches withEvent:event];&nbsp; &nbsp; [self.nextResponder touchesBegan:touches withEvent:event];&nbsp;}

Answer 3

也无需继承！只需将其放在实现的顶层即可，然后再进行其他操作：#pragma mark PassTouch@interface UIButton (PassTouch)@end@implementation UIButton (PassTouch)- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{&nbsp; &nbsp; [super touchesBegan:touches withEvent:event];&nbsp; &nbsp; [self.nextResponder touchesBegan:touches withEvent:event];}- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{&nbsp; &nbsp; [super touchesMoved:touches withEvent:event];&nbsp; &nbsp; [self.nextResponder touchesMoved:touches withEvent:event];}- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{&nbsp; &nbsp; [super touchesEnded:touches withEvent:event];&nbsp; &nbsp; [self.nextResponder touchesEnded:touches withEvent:event];}- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{&nbsp; &nbsp; [super touchesCancelled:touches withEvent:event];&nbsp; &nbsp; [self.nextResponder touchesCancelled:touches withEvent:event];}@end