Swift: UITapGestureRecognizer for uiimageview terminate app in custome view

Question

I have some Class extended from base class (MSC_CLItem) like this:

class MSC_CLItem
{
    var Type:MSC_CustomListType!

    func RenderUI(Point:CGPoint) -> UIView
    {
        return UIView(frame: CGRect.zero)
    }
}

Each extended class must to override RenderUI func to generate itself. All of the extended objects will be added in UIScrollView. Now my problem is: An uiimageview with TapGesture inside of custom view not detect action. For example my class is:

class MSC_CLItem_Tizer : MSC_CLItem
{
    var Title:String!
    var Video:MSC_CLItem_TizerVideo!
    var Detail:MSC_CLItem_TizerDetail!

    private init(title:String!)
    {
        super.init()
        self.Title = title
        super.Type = .Tizer
    }

    override func RenderUI(Point:CGPoint) -> UIView
    {
        let v = UIImageView()
        v.backgroundColor = UIColor.yellowColor()
        let screenSize: CGRect = UIScreen.mainScreen().bounds
        v.frame.size = CGSize(width: screenSize.width - 10, height: CGFloat(160))
        v.frame.origin = Point

        let vid = UIImageView()
        vid.image = UIImage(named: "default")
        vid.backgroundColor = UIColor.grayColor()
        vid.contentMode = .ScaleAspectFill
        vid.af_setImageWithURL(NSURL(string: "Image HTTP url")!)
        vid.frame.size = v.frame.size
        vid.frame.origin = CGPoint(x: 0, y: 0)
        vid.clipsToBounds = true
        vid.userInteractionEnabled = true
        v.userInteractionEnabled = true
        let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped:"))
        vid.addGestureRecognizer(tapRecognizer)
        v.addSubview(vid)
    }

    func imageTapped(gestureRecognizer: UITapGestureRecognizer) {
        //Not detected to here
    }
}

And when I tap on image the following error occurred:

NSForwarding: warning: object 0x7c8cc830 of class 'MSC_CLItem_Tizer' does not implement methodSignatureForSelector: -- trouble ahead Unrecognized selector -[MSC_CLItem_Tizer imageTapped:]

I'm very confused of which section of my code is wrong?

Thank you

score 1 · Accepted Answer · edited May 23 '17 at 12:15

1

You must declare the super class as NSObject

class MSC_CLItem : NSObject
{
  ......
}


let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped:"))
tapGesture.numberOfTouchesRequired = 1;
tapGesture.numberOfTapsRequired = 1;
vid.addGestureRecognizer(tapRecognizer)
v.addSubview(vid)
self.view.addSubview(v)

For more details

Does not implement methodSignatureForSelector: — trouble ahead

Got Unrecognized selector -replacementObjectForKeyedArchiver: crash when implementing NSCoding in Swift [Xcode 6 GM]

edited May 23 '17 at 12:15

Community

1
1

answered Nov 23 '15 at 09:14

user3182143

9,459
3
32
39

Tnx for solution, I try your solution and many other but have same error – Imran Sh Nov 23 '15 at 09:19
is imageTapped method calling first? – user3182143 Nov 23 '15 at 09:22
Why did you set two images for gesture recognizer? – user3182143 Nov 23 '15 at 09:32
One of them is local and second is remote (HTTP) – Imran Sh Nov 23 '15 at 09:36
very useful but not exactly correct, I cant's extend from 2 class in my class, so I extend MSC_CLItem from NSObject and worked fine, Please correct your answer to help others. Thank you so much – Imran Sh Nov 23 '15 at 10:02

score 0 · Answer 2 · answered Nov 23 '15 at 09:02

0

I guess here can be a problem. Write this line without ":"

let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("imageTapped"))

answered Nov 23 '15 at 09:02

Berike

39
1
5

Swift: UITapGestureRecognizer for uiimageview terminate app in custome view

2 Answers2