执行操作从UI

Question

选择图像时，我有具有一个UIView：

1. 图像查看
2. 文本视图
3. 滚动视图（它具有在运行时动态创建的多个图像）

我需要做的是：当我选择一个图像（第一幅图像或滚动视图中的图像）时，会出现一个弹出窗口，其中包含图像。

我准备了弹出式视图，但现在我需要的是一种识别用户按下的图像的方法，以便我可以调用弹出式控制器并查看图像。 thx in advanced。

Answer 1

简单解决方案： 为每个图像视图添加轻击手势识别器。 然后在手势识别器选择器中，您可以使用视图手势所附的发件人的视图属性。

例子：

UIImageView* imageView1; 

    UITapGestureRecognizer* tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTaps:)]; 

/* The number of fingers that must be on the screen */ 
tapGestureRecognizer.numberOfTouchesRequired = 1; 

/* The total number of taps to be performed before the gesture is recognized */ 
tapGestureRecognizer.numberOfTapsRequired = 1; 

然后handleTaps你可以做以下

-(void) handleTaps:(UITapGestureRecognizer*)paramSender 
{ 
    UIImageVIew* seletedImageView = paramSender.view; 
UIImage* image = selectImageView.image; //do whatever you want with image 
} 

*不要忘记设置imageView.userInteractionEnabled = YES;

迅速测试代码

import UIKit 

class ViewController: UIViewController { 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 

     var imageView1 : UIImageView 
     var image1 : UIImage 

     image1 = UIImage(named: "testImage")! 
     imageView1 = UIImageView(image: image1) 
     imageView1.tag = 1 
     imageView1.frame = CGRectMake(10, 10, 100, 100) 
     let tapGesture = UITapGestureRecognizer(target: self, action: Selector("handleTap:")) 
     tapGesture.numberOfTouchesRequired = 1 
     tapGesture.numberOfTapsRequired = 1 
     imageView1.userInteractionEnabled = true 

     imageView1.addGestureRecognizer(tapGesture) 

     self.view.addSubview(imageView1) 
    } 
    func handleTap(sender: UITapGestureRecognizer) { 
     var imageView : UIImageView = sender.view as UIImageView 
     var image : UIImage = imageView.image! 
     println("Taped UIImageVIew"+String(imageView.tag)) 
    } 
    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 


}