在滚动视图内的多个图像视图上点击手势未触发事件，只有第一个图像视图点击手势有效？
Tap gesture on multiple imageview inside scrollview not firing event , only first imageview tap gesture working?
场景是我有图像视图，我已经将其添加到滚动视图中，然后在每个图像视图上添加了点击手势，但只有第一个图像视图触发事件。
已尝试以下操作：
1.创建了 imageview
的扩展
extension UIImageView {
public func openMenu() {
let tapGestureRecognizer = UITapGestureRecognizer(target:self, action:Selector("handleTapGesture:"))
//mImg.addGestureRecognizer()
self.addGestureRecognizer(tapGestureRecognizer)
print("open")
}
}
2。在循环中添加点击手势（在滚动视图上添加图像视图的方式与添加点击手势的方式相同）
//the loop go till all images will load
for var index = 0; index < imagesName.count; index++ {
let mImg: UIImageView = UIImageView()
let pDict = homePageProductArr[index] as NSDictionary
//Create a UIVIEW
let containerView:UIView = UIView(frame: CGRect(x: 0, y: 0, width: 80, height: 100))
let nameLabel:UILabel = UILabel(frame:CGRect(x: xOffset+20, y: 85, width: 100, height: 20))
nameLabel.text = (pDict.objectForKey("CategoryName") as! String)
nameLabel.font = UIFont(name: "Helvetica Neue", size: 10.0)
containerView.addSubview(nameLabel)
let tapMenuCategoryImageTGR = UITapGestureRecognizer(target: self, action: Selector("handleTapGesture:"))
containerView.addGestureRecognizer(tapMenuCategoryImageTGR)
// make the imageview object because in scrollview we need image
mImg.frame = CGRectMake(5 + xOffset, 0, 80, 80)
// the offset represent the values, used so that topleft for each image will
// change with(5+xOffset, 0)and the bottomright(160, 110)
//mImg.image = UIImage(named: imagesName[index])
mImg.imageFromUrl(imagesName[index])
//mImg.imageFromServerURL(imagesName[index])
//Creating Circular Image
//mImg.layer.borderWidth = 1
mImg.layer.masksToBounds = true
mImg.layer.borderColor = UIColor.whiteColor().CGColor
mImg.layer.cornerRadius = mImg.frame.height/2
mImg.clipsToBounds = false
mImg.openMenu()
mImg.userInteractionEnabled = true
mImg.addGestureRecognizer = tapMenuCategoryImageTGR
// The image will put on the img object
images.insert(mImg, atIndex: index)
//Put the img object at the images array which is mutable array
scrollview.contentSize = CGSizeMake(120 + xOffset, 110)
//scroll view size show after 125 width the scroll view enabled
scrollview.addSubview(images[index] as! UIView)
//set images on scroll view
xOffset += 100
}
请分享您的建议。
最后通过在 imageview 上添加按钮解决，并使其背景颜色清晰，标题为“”：
这是代码片段：
//print(mDict.objectForKey("ImageURL"))
//var scrollWidth: Int = 120
scrollview.contentSize = CGSizeMake(120.0, 80.0)
var xOffset: CGFloat = 5
//the loop go till all images will load
for index in 0 ..< imagesName.count {
let mImg: UIImageView = UIImageView()
//set placeholder image
mImg.image = UIImage(named: "lazyload_icon.png")
let pDict = homePageProductArr[index] as NSDictionary
//Create a UIVIEW
let containerView:UIView = UIView(frame: CGRect(x: 0, y: 0, width: 80, height: 120))
let nameLabel:UILabel = UILabel(frame:CGRect(x: xOffset+20, y: 95, width: 100, height: 20))
nameLabel.text = (pDict.objectForKey("CategoryName") as! String)
nameLabel.font = UIFont(name: "Helvetica Neue", size: Constant().HomeLabelFontSize)
nameLabel.textColor = UIColor.colorWithHexString(Constant().HomeLabelHexColorCode)
//set line and wrap text
nameLabel.numberOfLines = 0
nameLabel.sizeToFit()
containerView.addSubview(nameLabel)
containerView.userInteractionEnabled = false
// make the imageview object because in scrollview we need image
mImg.frame = CGRectMake(xOffset , 0, 90, 90)
// the offset represent the values, used so that topleft for each image will
// change with(5+xOffset, 0)and the bottomright(160, 110)
//mImg.image = UIImage(named: imagesName[index])
mImg.imageFromUrl(imagesName[index])
//mImg.imageFromServerURL(imagesName[index])
//Creating Circular Image
mImg.layer.masksToBounds = true
mImg.layer.borderColor = UIColor.whiteColor().CGColor
mImg.layer.cornerRadius = mImg.frame.height/2
mImg.clipsToBounds = false
mImg.userInteractionEnabled = false
// The image will put on the img object
images.insert(mImg, atIndex: index)
// Put the img object at the images array which is mutable array
scrollview.contentSize = CGSizeMake(120 + xOffset, 110)
//scroll view size show after 125 width the scroll view enabled
containerView.addSubview(images[index] as! UIView)
scrollview.addSubview(containerView)//images[index] as! UIView)
// set images on scroll view
xOffset += 100
//Adding button to fire event
let touchButton:UIButton = UIButton()
touchButton.frame = mImg.frame
touchButton.backgroundColor = UIColor.clearColor()
touchButton.tag = index
touchButton.addTarget(self, action: Selector("touchCategoryAction:"), forControlEvents: UIControlEvents.TouchUpInside)
touchButton.setTitle("", forState: UIControlState.Normal)
scrollview.addSubview(touchButton)
scrollview.bringSubviewToFront(touchButton)
Instead of using UIImageView you can use UIButton and set the
background image to the button and set the title "". Then you don't
need to add both UIImageView and UIButton. UIButton can easily got the
Tapped event over UIScrollView.
这不是UIScrollView的问题。我们可以使用 Gesture 来单一视图。
下面给出了您问题的另一种解决方案-
您必须全局声明点击手势。
var singleTap:UITapGestureRecognizer!
在这一步中，我们创建一个函数，它接受 UIimageView 并在其顶部添加手势。
func setGesture(img_View:UIImageView) {
singleTap = UITapGestureRecognizer.init(target: self, action: Selector("resignResponder"))
singleTap.numberOfTapsRequired = 1
view.addGestureRecognizer(singleTap)
}
现在创建手势动作。
func resignResponder() {
}
These are the three steps as the solution of your problem . Call
"setGesture" for every imageView. You can successfully recognize the
tap for every imageView.
场景是我有图像视图，我已经将其添加到滚动视图中，然后在每个图像视图上添加了点击手势，但只有第一个图像视图触发事件。
已尝试以下操作：
1.创建了 imageview
的扩展extension UIImageView {
public func openMenu() {
let tapGestureRecognizer = UITapGestureRecognizer(target:self, action:Selector("handleTapGesture:"))
//mImg.addGestureRecognizer()
self.addGestureRecognizer(tapGestureRecognizer)
print("open")
}
}
2。在循环中添加点击手势（在滚动视图上添加图像视图的方式与添加点击手势的方式相同）
//the loop go till all images will load
for var index = 0; index < imagesName.count; index++ {
let mImg: UIImageView = UIImageView()
let pDict = homePageProductArr[index] as NSDictionary
//Create a UIVIEW
let containerView:UIView = UIView(frame: CGRect(x: 0, y: 0, width: 80, height: 100))
let nameLabel:UILabel = UILabel(frame:CGRect(x: xOffset+20, y: 85, width: 100, height: 20))
nameLabel.text = (pDict.objectForKey("CategoryName") as! String)
nameLabel.font = UIFont(name: "Helvetica Neue", size: 10.0)
containerView.addSubview(nameLabel)
let tapMenuCategoryImageTGR = UITapGestureRecognizer(target: self, action: Selector("handleTapGesture:"))
containerView.addGestureRecognizer(tapMenuCategoryImageTGR)
// make the imageview object because in scrollview we need image
mImg.frame = CGRectMake(5 + xOffset, 0, 80, 80)
// the offset represent the values, used so that topleft for each image will
// change with(5+xOffset, 0)and the bottomright(160, 110)
//mImg.image = UIImage(named: imagesName[index])
mImg.imageFromUrl(imagesName[index])
//mImg.imageFromServerURL(imagesName[index])
//Creating Circular Image
//mImg.layer.borderWidth = 1
mImg.layer.masksToBounds = true
mImg.layer.borderColor = UIColor.whiteColor().CGColor
mImg.layer.cornerRadius = mImg.frame.height/2
mImg.clipsToBounds = false
mImg.openMenu()
mImg.userInteractionEnabled = true
mImg.addGestureRecognizer = tapMenuCategoryImageTGR
// The image will put on the img object
images.insert(mImg, atIndex: index)
//Put the img object at the images array which is mutable array
scrollview.contentSize = CGSizeMake(120 + xOffset, 110)
//scroll view size show after 125 width the scroll view enabled
scrollview.addSubview(images[index] as! UIView)
//set images on scroll view
xOffset += 100
}
请分享您的建议。
最后通过在 imageview 上添加按钮解决，并使其背景颜色清晰，标题为“”：
这是代码片段：
//print(mDict.objectForKey("ImageURL"))
//var scrollWidth: Int = 120
scrollview.contentSize = CGSizeMake(120.0, 80.0)
var xOffset: CGFloat = 5
//the loop go till all images will load
for index in 0 ..< imagesName.count {
let mImg: UIImageView = UIImageView()
//set placeholder image
mImg.image = UIImage(named: "lazyload_icon.png")
let pDict = homePageProductArr[index] as NSDictionary
//Create a UIVIEW
let containerView:UIView = UIView(frame: CGRect(x: 0, y: 0, width: 80, height: 120))
let nameLabel:UILabel = UILabel(frame:CGRect(x: xOffset+20, y: 95, width: 100, height: 20))
nameLabel.text = (pDict.objectForKey("CategoryName") as! String)
nameLabel.font = UIFont(name: "Helvetica Neue", size: Constant().HomeLabelFontSize)
nameLabel.textColor = UIColor.colorWithHexString(Constant().HomeLabelHexColorCode)
//set line and wrap text
nameLabel.numberOfLines = 0
nameLabel.sizeToFit()
containerView.addSubview(nameLabel)
containerView.userInteractionEnabled = false
// make the imageview object because in scrollview we need image
mImg.frame = CGRectMake(xOffset , 0, 90, 90)
// the offset represent the values, used so that topleft for each image will
// change with(5+xOffset, 0)and the bottomright(160, 110)
//mImg.image = UIImage(named: imagesName[index])
mImg.imageFromUrl(imagesName[index])
//mImg.imageFromServerURL(imagesName[index])
//Creating Circular Image
mImg.layer.masksToBounds = true
mImg.layer.borderColor = UIColor.whiteColor().CGColor
mImg.layer.cornerRadius = mImg.frame.height/2
mImg.clipsToBounds = false
mImg.userInteractionEnabled = false
// The image will put on the img object
images.insert(mImg, atIndex: index)
// Put the img object at the images array which is mutable array
scrollview.contentSize = CGSizeMake(120 + xOffset, 110)
//scroll view size show after 125 width the scroll view enabled
containerView.addSubview(images[index] as! UIView)
scrollview.addSubview(containerView)//images[index] as! UIView)
// set images on scroll view
xOffset += 100
//Adding button to fire event
let touchButton:UIButton = UIButton()
touchButton.frame = mImg.frame
touchButton.backgroundColor = UIColor.clearColor()
touchButton.tag = index
touchButton.addTarget(self, action: Selector("touchCategoryAction:"), forControlEvents: UIControlEvents.TouchUpInside)
touchButton.setTitle("", forState: UIControlState.Normal)
scrollview.addSubview(touchButton)
scrollview.bringSubviewToFront(touchButton)
Instead of using UIImageView you can use UIButton and set the background image to the button and set the title "". Then you don't need to add both UIImageView and UIButton. UIButton can easily got the Tapped event over UIScrollView.
这不是UIScrollView的问题。我们可以使用 Gesture 来单一视图。 下面给出了您问题的另一种解决方案-
您必须全局声明点击手势。
var singleTap:UITapGestureRecognizer!在这一步中，我们创建一个函数，它接受 UIimageView 并在其顶部添加手势。
func setGesture(img_View:UIImageView) { singleTap = UITapGestureRecognizer.init(target: self, action: Selector("resignResponder")) singleTap.numberOfTapsRequired = 1 view.addGestureRecognizer(singleTap)}
现在创建手势动作。
func resignResponder() { }
These are the three steps as the solution of your problem . Call "setGesture" for every imageView. You can successfully recognize the tap for every imageView.