Question

我有在Android上使用WebView播放YouTube的代码。它适用于新手机（Android 4.4,5.1,6,7 OS），但是当我在Android 4.0.3上试用它时，它会打开带有控件的YouTube框架，点击按钮播放后，灰色背景显示全部时间。

代码：

private void initializeWebView() {    

    WebView webView = (WebView) findViewById(R.id.webView);

    //webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
    webView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
    webView.setBackgroundColor(getResources().getColor(R.color.semi_transparent_black_20percentage));  
    webView.getSettings().setBuiltInZoomControls(true);
    //webView.getSettings().setDisplayZoomControls(false);

    webView.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            return false;
        }
    });
    WebSettings webSetting = webView.getSettings();
    webSetting.setJavaScriptEnabled(true);
    webSetting.setDisplayZoomControls(false);

    //webSetting.setLoadWithOverviewMode(true);
    //webSetting.setUseWideViewPort(true);
    int screenWidth = getWindowManager().getDefaultDisplay().getWidth();
    webView.setLayoutParams(new RelativeLayout.LayoutParams( screenWidth / 2, LayoutParams.MATCH_PARENT));
     getWindow().setFlags(
            WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
            WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);
    webView.getSettings().setPluginState(WebSettings.PluginState.ON);
    webSetting.setJavaScriptEnabled(true);
    webSetting.setBuiltInZoomControls(true);
    webSetting.setAllowContentAccess(true);
    webSetting.setEnableSmoothTransition(true);
    webSetting.setLoadsImagesAutomatically(true);
    webSetting.setLoadWithOverviewMode(true);
    webSetting.setSupportZoom(false);
    webSetting.setUseWideViewPort(true);
    webSetting.setAppCacheEnabled(true);
    webSetting.setSupportMultipleWindows(true);

    webView.setVisibility(View.VISIBLE);
}   



public void  loadPageIntoWebView(String htmlFilename){

    AssetManager mgr = getBaseContext().getAssets();
    try {
        String htmlContentInStringFormat = "";
        WebView webView = (WebView) findViewById(R.id.webView);
        String frameVideo = "<body>Video From YouTube<br><iframe width=\"420\" height=\"315\" src=\"https://www.youtube.com/embed/2a7f29Jvihc?wmode=transparent\" frameborder=\"0\" allowtransparency></iframe></body>";
        htmlContentInStringFormat = frameVideo;
        webView.loadDataWithBaseURL(null, htmlContentInStringFormat, "text/html", "utf-8", null);
    } catch (Exception e) {
        e.printStackTrace();
    }      
}

此代码运行良好，可在较新的手机上播放YouTube视频（Android OS4.4-7）。

我应该改变什么才能让它在Android 4.0.3上运行？

this is the photo showing the gray background without playing youtubevideo after clicking on the button play inthe middle of the screen:

Answer 1

解决！

添加以下行后，它适用于Android 4.0.3以及：

    webView.setWebChromeClient(new WebChromeClient() {});

这不是强制性的，但我在此行之前添加了该行： webView.setWebViewClient（新的WebViewClient（）

希望此解决方案能够帮助其他同事使用Epson Moverio BT-200智能眼镜等。

- ）

嵌入了iframe的Youtube视频无法在Android 4.0.3上播放

1 个答案: