我有一个包含iframe（HTML元素）的WebView。该iframe具有Peertube视频播放器，我将&autoplay=1传递给该iframe，它在android，iPad和浏览器上都可以正常运行，但是在iPhone上无法自动播放视频。
我尝试使用带有以下代码的WKWebView进行自定义渲染：
class FullScreenEnabledWebViewRenderer : WkWebViewRenderer
{
WKUserContentController userController;
public FullScreenEnabledWebViewRenderer() : this(new WKWebViewConfiguration() { MediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypes.None, AllowsInlineMediaPlayback = true, MediaPlaybackRequiresUserAction = false, RequiresUserActionForMediaPlayback = false })
{
}
public FullScreenEnabledWebViewRenderer(WKWebViewConfiguration config) : base(config)
{
config.AllowsInlineMediaPlayback = true;
config.AllowsAirPlayForMediaPlayback = true;
config.AllowsPictureInPictureMediaPlayback = true;
config.MediaPlaybackAllowsAirPlay = true;
config.MediaPlaybackRequiresUserAction = false;
config.RequiresUserActionForMediaPlayback = false;
config.MediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypes.None;
}
}
仍然不起作用。您能帮我吗？
iOS中的Webview不能很好地支持iframe。因此最好使用<video> like
var htmlSource = new HtmlWebViewSource();
htmlSource.Html = @"<html><body><video width='300' height='500' muted='muted' controls autoplay='autoplay'><source src='https://ia800201.us.archive.org/12/items/BigBuckBunny_328/BigBuckBunny_512kb.mp4' type='video/mp4'></video></body></html>";
webview.Source = htmlSource;
如果它仍然无法在iOS中自动播放，我们可以调用JS来播放它。
using System;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;
using App4;
using App4.iOS;
using WebKit;
using ObjCRuntime;
[assembly: ExportRenderer(typeof(WebView), typeof(FullScreenEnabledWebViewRenderer))]
namespace App4.iOS
{
public class FullScreenEnabledWebViewRenderer: ViewRenderer<WebView, WKWebView>
{
WKWebView wkWebView;
protected override void OnElementChanged(ElementChangedEventArgs<WebView> e)
{
base.OnElementChanged(e);
if (Control == null)
{
var config = new WKWebViewConfiguration();
config.AllowsInlineMediaPlayback = true;
config.AllowsAirPlayForMediaPlayback = true;
config.AllowsPictureInPictureMediaPlayback = true;
config.MediaPlaybackAllowsAirPlay = true;
config.MediaPlaybackRequiresUserAction = false;
config.RequiresUserActionForMediaPlayback = false;
config.MediaTypesRequiringUserActionForPlayback = WKAudiovisualMediaTypes.None;
wkWebView = new WKWebView(Frame, config);
wkWebView.NavigationDelegate = new WkWebviewPolicy();
SetNativeControl(wkWebView);
}
}
}
public class WkWebviewPolicy : WKNavigationDelegate
{
public override void DecidePolicy(WKWebView webView, WKNavigationAction navigationAction, WKWebpagePreferences preferences, [BlockProxy(typeof(NIDActionArity2V120))] Action<WKNavigationActionPolicy, WKWebpagePreferences> decisionHandler)
{
decisionHandler.Invoke(WKNavigationActionPolicy.Allow, preferences);
//base.DecidePolicy(webView, navigationAction, preferences, decisionHandler);
}
public override void DidFinishNavigation(WKWebView webView, WKNavigation navigation)
{
base.DidFinishNavigation(webView, navigation);
var JSstr = @"var videos = document.querySelectorAll('video'); for (var i = videos.length - 1; i >= 0; i--) { var ivideo = videos[i]; ivideo.setAttribute('webkit-playsinline','\'); ivideo.play(); };";
webView.EvaluateJavaScript(JSstr,null);
}
}
}