NVActivityIndi​​catorView僅用於特定視圖

Question

我正在使用此庫https://github.com/ninjaprox/NVActivityIndicatorView來顯示加載指示器。默認情況下，它會阻止整個視圖控制器，但是如何僅顯示特定視圖的活動指示器。例如，如果一個視圖控制器包含一個webview和一些其他視圖，活動指示器應該只適用於webview，我應該能夠與另一個視圖交互。

class FaqViewController: UIViewController, UIWebViewDelegate 
{ 

    @IBOutlet var faqWebView: UIWebView! 
    static let activityData = ActivityData() 
    var activityIndicator : NVActivityIndicatorView! 

    override func viewDidLoad() 
    { 
     super.viewDidLoad() 
     faqWebView.delegate = self 
     faqWebView.loadRequest(URLRequest(url: URL(string: "https://www.google.com")!)) 
    } 

    func webViewDidStartLoad(_ webView: UIWebView) 
    { 
     NVActivityIndicatorView.DEFAULT_BLOCKER_SIZE = CGSize(width: 45, height: 45) 
     NVActivityIndicatorPresenter.sharedInstance.startAnimating(FaqViewController.activityData) 
    } 

    func webViewDidFinishLoad(_ webView: UIWebView) 
    { 
     NVActivityIndicatorPresenter.sharedInstance.stopAnimating() 
    } 
} 

Answer 1

爲e.g顯示activityIndicator

func webViewDidStartLoad(_ webView: UIWebView) 
{ 
    //NVActivityIndicatorView.DEFAULT_BLOCKER_SIZE = CGSize(width: 45, height: 45) 
    //NVActivityIndicatorPresenter.sharedInstance.startAnimating(FaqViewController.activityData) 

    let xAxis = self.view.center.x // or use (view.frame.size.width/2) // or use (faqWebView.frame.size.width/2) 
    let yAxis = self.view.center.y // or use (view.frame.size.height/2) // or use (faqWebView.frame.size.height/2) 



let frame = CGRect(x: (xAxis - 50), y: (yAxis - 50), width: 45, height: 45) 
activityIndicator = NVActivityIndicatorView(frame: frame) 
activityIndicator.type = . ballScale // add your type 
activityIndicator.color = UIColor.red // add your color 

self.view.addSubview(activityIndicator) // or use webView.addSubview(activityIndicator) 
activityIndicator.startAnimating() 
} 

爲隱藏

func webView(_ webView: UIWebView, didFailLoadWithError error: Error) 
    { 
     hideactivityIndicator() 
    } 

    func webViewDidFinishLoad(webView: UIWebView!) 
    { 
     hideactivityIndicator() 
    } 

    func hideactivityIndicator() 
    { 

    activityIndicator. stopAnimating() 
    activityIndicator.removeFromSuperview() 
    }