android Webview加载腾讯视屏不显示问题

 private WebSettings settings;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)    settings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
settings.setDomStorageEnabled(true);
settings.setPluginState(WebSettings.PluginState.ON);
settings.setAllowFileAccess(true);
settings.setLoadWithOverviewMode(true);
settings.setUseWideViewPort(true);
settings.setDatabaseEnabled(true);
settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
settings.setDefaultTextEncodingName("UTF-8");