[英]NVActivityIndicatorView only for particular view
我正在使用此库https://github.com/ninjaprox/NVActivityIndicatorView来显示加载指示器。 默认情况下,它会阻止整个视图控制器,但如何仅为特定视图显示活动指示器。 例如,如果视图控制器包含webview和其他视图,则活动指示符应仅用于webview,并且我应该能够与其他视图交互。
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()
}
}
例如,显示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()
}
为了隐藏
func webView(_ webView: UIWebView, didFailLoadWithError error: Error)
{
hideactivityIndicator()
}
func webViewDidFinishLoad(webView: UIWebView!)
{
hideactivityIndicator()
}
func hideactivityIndicator()
{
activityIndicator. stopAnimating()
activityIndicator.removeFromSuperview()
}
您必须将其添加为子视图,以便显示要显示的视图。 在您的情况下,您只想在UIWebView上显示,那么您的代码应该是这样的
self.faqWebView.addSubView(activityIndicator)
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