ios - 单击 UIImageView SWIFT 不工作

Question

有一个名为“imageView”的对象，我需要在单击“imageView”时始终调用函数“clicouCrosshair”，但它不起作用。我尝试了一些在互联网上找到的不同教程，但没有成功。有人知道为什么以及如何解决这个问题吗？

我认为问题是因为我将我的 View 用作 GMSMapView..在“prepareMap”函数中配置了“UIImageView”。

import UIKit
import GoogleMaps

class Maps_criarArea: UIViewController {

    var projNome:String!;
    var mapView:GMSMapView!;

    var imageView:UIImageView!;

    func clicouCrosshair(sender: AnyObject){
        print("CROSSHAIR");
    }

    override func viewDidLoad() {
        super.viewDidLoad();


        GMSServices.provideAPIKey("AIzaSyB62KDZSGfbbN1IIVnlhewi4PpEZmxPJYM");


        let centerBR_lat = -15.30;
        let centerBR_lng = -49.57;

        let cameraP = GMSCameraPosition.cameraWithLatitude(centerBR_lat, longitude: centerBR_lng, zoom: 4);
        mapView = GMSMapView.mapWithFrame( CGRectZero, camera: cameraP)
        mapView.myLocationEnabled = true
        view = mapView;

        self.prepareMap();
    }

    func prepareMap(){

        let imageName = "crosshair";
        let image = UIImage(named: imageName);
        imageView = UIImageView(image: image!);

        let screenSize: CGRect = UIScreen.mainScreen().bounds;
        let WidthPosition = (screenSize.width*0.5)-32;
        let heightPosition = (screenSize.height*0.5)-32;

        imageView.frame = CGRect(x: WidthPosition, y: heightPosition, width: 64, height: 64);
        imageView.userInteractionEnabled = true;


        let detectTap = UITapGestureRecognizer(target: self, action: #selector(self.clicouCrosshair(_:))  )
        //detectTap.numberOfTapsRequired = 1


        imageView.addGestureRecognizer(detectTap)

        mapView.addSubview(imageView);







    }


    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }



    //returning to view
    override func viewWillAppear(animated: Bool) {
        let saveBtn : UIBarButtonItem = UIBarButtonItem(title: "Salvar", style: UIBarButtonItemStyle.Plain, target: self, action: #selector(Maps_criarArea.salvar(_:)) )
        self.navigationItem.rightBarButtonItem = saveBtn
    }

    func salvar(sender:UIBarButtonItem){

    }

}

Answer 1

您的 UIImageView 在您的 GMSMapView 中，您的点击始终由 GMSMapView 处理。尝试忽略 GMSMapView 中的点击并将其传递给 UIImageView。添加UIGestureRecognizerDelegate在您查看并使用委托(delegate)方法 gestureRecognizerShouldBegin: 时。希望这会有所帮助。