Shobhakar Tiwari Shobhakar Tiwari - 7 months ago 99
Swift Question

Tap gesture on multiple imageview inside scrollview not firing event , only first imageview tap gesture working?

Scenario is I have imageview which I have added inside a scrollview and then tapgesture added on each imageview but only first one imageview firing event .

Have tried following :

1. Created Extension of imageview

extension UIImageView {
public func openMenu() {
let tapGestureRecognizer = UITapGestureRecognizer(target:self, action:Selector("handleTapGesture:"))
//mImg.addGestureRecognizer()
self.addGestureRecognizer(tapGestureRecognizer)
print("open")
}
}


2. Added tap gesture in the loop (the way imageview are added on scrollview same way tapgesture added )

//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
}


Kindly share your suggestions on it .

Answer

Finally solved by adding button on imageview , and making it background color clear and title to "":

Here is Code Snippet :

 //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)
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