android - Android Webview 中的 Facebook 评论

Question

我正在尝试将带有 Facebook 评论部分的网页加载到我的 Android WebView 中。我遵循了这个问题提供的解决方案:Android unable to implement facebook comment in a webview due to default browser

当用户点击网页中的按钮登录 Facebook 时，他们会看到登录屏幕并可以成功登录，然后该 View 会关闭，他们会再次看到原始网页。但是，他们仍然没有登录。原来的WebView和之前一样的状态，登录按钮还在。我缺少什么才能真正从 childView 登录回到原来的评论部分？相关代码贴在下面:

webView.setLayoutParams(getLayoutParams());

    webView.setWebChromeClient(new DollyChromeClient());

    webView.setWebViewClient(new DollyWebViewClient());

    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setAppCacheEnabled(true);
    webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
    webView.getSettings().setDomStorageEnabled(true);
    webView.getSettings().setSupportMultipleWindows(true);
    webView.getSettings().setSupportZoom(true);
    webView.getSettings().setDisplayZoomControls(true);
    webView.getSettings().setBuiltInZoomControls(true);

    CookieManager.getInstance().setAcceptCookie(true);

private RelativeLayout.LayoutParams getLayoutParams(){
    return new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}



final class DollyChromeClient extends WebChromeClient {
    @Override
    public boolean onCreateWindow(WebView view, boolean isDialog, boolean isUserGesture, Message resultMsg) {
        childView = new WebView(mContext);
        childView.getSettings().setDomStorageEnabled(true);
        childView.getSettings().setJavaScriptEnabled(true);
        childView.getSettings().setSupportZoom(true);
        childView.getSettings().setBuiltInZoomControls(true);
        childView.setWebViewClient(new FaceBookClient());
        childView.setWebChromeClient(this);
        childView.setLayoutParams(getLayoutParams());

        childView.getSettings().setSupportMultipleWindows(true);
        parentLayout.addView(childView);
        childView.requestFocus();
        webView.setVisibility(View.GONE);

        WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
        transport.setWebView(childView);
        resultMsg.sendToTarget();
        return true;
    }

    @Override
    public boolean onConsoleMessage(ConsoleMessage cm) {
        Log.d("WebViewDebug", cm.message() + " -- From line "
                + cm.lineNumber() + " of "
                + cm.sourceId());
        return true;
    }

    @Override
    public void onCloseWindow(WebView window) {
        parentLayout.removeViewAt(parentLayout.getChildCount() -1);
        childView = null;
        webView.setVisibility(View.VISIBLE);
        webView.requestFocus();
    }
}

private class FaceBookClient extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        Log.i("REQUEST URL", url);
        return false;
    }
}

Answer 1

经过几天的努力，我发现这是由 Android Lollipop 的变化引起的。最终在一台旧设备上进行了测试，才意识到问题的根源，这很快让我想到了这个:https://developer.android.com/about/versions/android-5.0-changes.html#BehaviorWebView

最终的解决方案是下面的代码 fragment :

if (Build.VERSION.SDK_INT >= 21) {
        webView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
        CookieManager.getInstance().setAcceptThirdPartyCookies(webView, true);
}

我希望这可以帮助将来有人拔掉比我上周拔得少的头发。