Andoid:popwindow里嵌入webview使用报错解决方案:d.view.WindowManager$BadTokenException: Unable to add window -- t

错误背景：

最近闲的没事，将webview添加在popwindow里使用，配合同事写html5的JS做测试，结果等webview里的url加载后，我需要去touch里面的内容，就会报以下的错误：

11-14 18:06:01.597: WARN/KeyCharacterMap(10459): No keyboard for id 65541

11-14 18:06:01.597: WARN/KeyCharacterMap(10459): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
11-14 18:06:04.295: WARN/WindowManager(99): Attempted to add window with token that is a sub-window: android.os.BinderProxy@44eb14b8.  Aborting.
11-14 18:06:04.305: WARN/dalvikvm(10459): threadid=1: thread exiting with uncaught exception (group=0x40028a00)
11-14 18:06:04.305: ERROR/AndroidRuntime(10459): FATAL EXCEPTION: main
11-14 18:06:04.305: ERROR/AndroidRuntime(10459): android.view.WindowManager$BadTokenException: Unable to add window -- token android.view.ViewRoot$W@44cbdcb0 is not valid; is your activity running?

11-14 18:06:04.305: ERROR/AndroidRuntime(10459):     at android.view.ViewRoot.setView(ViewRoot.java:509)

最终发现mWebView.getSettings().setBuiltInZoomControls(true);不能设置，下面看代码

LayoutInflater mLayoutInflater = (LayoutInflater)cxt. getSystemService(cxt.LAYOUT_INFLATER_SERVICE);
menuView = (ViewGroup) mLayoutInflater.inflate(
R.layout.gridview_pop, null, true);

mWebView=(WebView) menuView.findViewById(R.id.gridview_webview);

        WebSettings webSettings = mWebView.getSettings();
        webSettings.setSavePassword(false);
        webSettings.setSaveFormData(false);
        webSettings.setJavaScriptEnabled(true);
        webSettings.setSupportZoom(true);
        webSettings.setUseWideViewPort(true);
        mWebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
        mWebView.setHorizontalScrollBarEnabled(false);
        mWebView.getSettings().setSupportZoom(true);


        //============================配合popwindow一定不能使用下面开关,否则就汇报
        //mWebView.getSettings().setBuiltInZoomControls(true);
        mWebView.setInitialScale(70);
        mWebView.setHorizontalScrollbarOverlay(true);
        mWebView.setWebChromeClient(new AdViewWebChromeClient(this));
        mWebView.setWebViewClient(new AdViewWebClient(this));
        mWebView.loadUrl("http://www.souapp.com");

POPWINDOW里嵌入的webview图例：