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如何在没有子类化的情况下设置UIView touch处理程序

uiview objective-c iphone

3

samwize · 技术社区 · 16 年前

如何捕捉触摸事件,例如 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 没有子类化UIView,也没有使用UIViewControllers。

所发生的是,我有一个简单的UIView创建编程,我需要检测基本的点击事件。

4 回复 | 直到 16 年前

1

4

bstahlhood 16 年前

如果您正在为iOS 4编写应用程序,请使用UIGestureRecognizer。你可以做你想做的事。识别手势而不进行子类化。

否则,子类化就是一种方法。

2

1

Adam Eberbach Adil Shaikh 16 年前

没有理由不这样做。如果你子类化什么都不加,那只是一个 UIView [super touchesBegan:touches] 在你的子类里面 touchesBegan

3

1

hotpaw2 16 年前

4

1

rraallvv 12 年前

CustomGestureRecognizer.h

#import <UIKit/UIKit.h>

@interface CustomGestureRecognizer : UIGestureRecognizer
{
}

- (id)initWithTarget:(id)target;

@end

卡斯tomgestureignizer.mm

#import "CustomGestureRecognizer.h"
#import <UIKit/UIGestureRecognizerSubclass.h>

@interface CustomGestureRecognizer()
{
}
@property (nonatomic, assign) id target;
@end

@implementation CustomGestureRecognizer

- (id)initWithTarget:(id)target
{
    if (self =  [super initWithTarget:target  action:Nil]) {
        self.target = target;
    }
    return self;
}

- (void)reset
{
    [super reset];
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];

    [self.target touchesBegan:touches withEvent:event];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesMoved:touches withEvent:event];

    [self.target touchesMoved:touches withEvent:event];
}

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [super touchesEnded:touches withEvent: event];

    [self.target touchesEnded:touches withEvent:event];
}
@end

CustomGestureRecognizer *customGestureRecognizer = [[CustomGestureRecognizer alloc] initWithTarget:self];
[glView addGestureRecognizer:customGestureRecognizer];