我想在幾個不同的ViewControllers上設置幾個不同的滾動視圖

Question

我在向幾個不同的視圖控制器添加滾動視圖時遇到了問題 - 到目前爲止，我已經在視圖控制器的前端，但是，我還沒有弄清楚如何使他們的工作（我是初學者）

這裏是

class ViewController: UIViewController, UIScrollViewDelegate { 

    @IBOutlet weak var firstscrollView: UIScrollView! 
    @IBOutlet weak var firstimageview: UIImageView! 
    @IBOutlet weak var secondscrollView: UIScrollView! 
    @IBOutlet weak var secondimageView: UIImageView! 

    override func viewDidLoad() { 

     super.viewDidLoad() 

     self.firstscrollView.minimumZoomScale = 1.0 
     self.firstscrollView.maximumZoomScale = 6.0 

     self.secondscrollView.minimumZoomScale = 1.0 
     self.secondscrollView.maximumZoomScale = 6.0 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

    func viewForZooming(in firstscrollView: UIScrollView) -> UIView? { 

     return self.firstimageview 
     return self.secondimageView 
    } 
} 

Answer 1

首先在viewDidLoad分配delegate兩個UIScrollView通過firstscrollView.delegate = self和secondscrollView.delegate = self代碼。

然後在委託UIScrollView方法檢查這樣

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

    if scrollView == firstscrollView { 
     return firstimageview 
    } else if scrollView == secondscrollView { 
     return secondscrollView 
    } 
    return nil 
} 

我希望這有助於。