Question

我面临的问题是，在上面的部分我有滚动视图，它有不同的图像点击它会将同一图像克隆到屏幕上。我已启用触摸，所以我可以拖动它，但当我点击另一个图像，它来到屏幕，我可以拖动其他图像，但现在不是前一个。任何人都可以有一个解决方案，所以我可以点击它拖动多个图像。我可以把4-5放在上面供我使用。

我使用此代码：代码：

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{ 
    UITouch *touch=[[event allTouches]anyObject];
    CGPoint location = [touch locationInView:touch.view];
    g1.center = location;    
}

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

提前谢谢。

Answer 1

我很难确切地说出问题所在，但我怀疑你可能会对你正在听的事件感到困惑。这样的东西可以让你告诉点击什么图像然后在它上面执行拖动操作。

#import "TouchView.h"


//TouchView.h

#import <Foundation/Foundation.h>
#import "TouchViewDelegate.h"

@interface TouchView : UIView {
    id <TouchViewDelegate>  delegate;
}
@property (retain) id delegate;
@end

//TouchView.m

@implementation TouchView
@synthesize delegate;

-(id) initWithFrame:(CGRect)frame
{
    self.userInteractionEnabled = YES;
    return self;
}
-(id) initWithCoder:(NSCoder *)aDecoder
{
    self.userInteractionEnabled = YES;
    return self;
}
-(void) awakeFromNib
{
    self.userInteractionEnabled = YES;
}
-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [delegate touchDown:self];
}
-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [delegate touchUp:self];
}
@end

//TouchViewDelegate.h
#import <UIKit/UIKit.h>


@protocol TouchViewDelegate
-(void) touchDown:(id) sender;
-(void) touchUp:(id)sender;
@end

iphone图片。多次触摸/拖动

1 个答案: