我正在使用这个库https://github.com/ninjaprox/NVActivityIndicatorView https://github.com/ninjaprox/NVActivityIndicatorView用于显示加载指示器。默认情况下,它会阻止整个视图控制器,但如何仅显示特定视图的活动指示器。例如,如果视图控制器包含 Web 视图和其他视图,则活动指示器应该仅适用于 Web 视图,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()
}
用于隐藏
func webView(_ webView: UIWebView, didFailLoadWithError error: Error)
{
hideactivityIndicator()
}
func webViewDidFinishLoad(webView: UIWebView!)
{
hideactivityIndicator()
}
func hideactivityIndicator()
{
activityIndicator. stopAnimating()
activityIndicator.removeFromSuperview()
}
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