Question

我在故事板中的Landscape中创建了一个具有方向的VC

我在其中添加了一个UIIScrollView，比如说，在VC中添加：（w）1000,500（h）。

我想做什么：

1）在ScrollView内滚动图像（高分辨率，如1334 x 750） 2）以横向模式ScrollView查看图像


To make ScrollView to display the image, I have to do it in `viewDidAppear` 

but here the Problems:

1) The Width and height of the `ScrollView` is gone
 
2) label on top gone.

3) The `ScrollView` Size become small something like 200 x 150 and start from the Top corner like (0,0) 


What I need to do to make `scrollview` size like before 1000 x 500?


--- Update -- 



class ViewController: UIViewController, UIScrollViewDelegate {

    @IBOutlet weak var myUIScrollView: UIScrollView!  

    var imgView: UIImageView!

    override func viewDidLoad() {

        super.viewDidLoad()

        //-- force to landscape mode:

        let value = UIInterfaceOrientation.LandscapeLeft.rawValue
        UIDevice.currentDevice().setValue(value, forKey: "orientation")


        self.myUIScrollView.maximumZoomScale = 10.0
        self.myUIScrollView.minimumZoomScale = 1.0
        self.myUIScrollView.delegate = self


        imgView = UIImageView(image: UIImage(named: "MyPhoto.png"))


    }


 override func viewDidAppear(animated: Bool) {

     self.myUIScrollView.contentSize = imgView.bounds.size

     self.myUIScrollView.addSubview(imgView)

     view.addSubview(myUIScollView)
}


    override func shouldAutorotate() -> Bool {

            return true
     }


    func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {
        return imgView
    }

Answer 1

尝试一下：：导入UIKit

ViewController类：UIViewController，UIScrollViewDelegate {

var image: UIImage!{
    get{
        return myImageView.image!
    }set{
        myImageView.image = newValue
        myImageView.sizeToFit()
        myScrollView.contentSize = myImageView.frame.size
    }
}

var myImageView = UIImageView()

@IBOutlet weak var myScrollView: UIScrollView!{
    didSet{
        myScrollView.delegate = self
        myScrollView.minimumZoomScale = 10.0
        myScrollView.maximumZoomScale = 1.0
        myScrollView.addSubview(myImageView)
    }
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    image = UIImage(named: "one")
}

func viewForZooming(in scrollView: UIScrollView) -> UIView? {
    return myImageView
}

}

UIScrollView无法以纵向或横向模式显示图像

1 个答案: