Android 加载webview报net::ERR_UNKNOWN_URL_SCHEME

遇到这种情况找不到网页net::ERR_UNKNOWN_URL_SCHEME

//加上它就OK了
webView.getSettings().setUserAgentString("Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0");