Why Android WebChromeClient's onCreateWindow method never got called?

Question

I'm building my app on webview service and trying to open new url in another window (neither in default system browser nor in same webview). I set up my own WebViewClient and WebChromeClient like below,

public class MyWebViewClient extends WebViewClient {  
    @Override
    public boolean shouldOverrideUrlLoading (WebView view, String url) {
        view.loadUrl(url);        
        return true;
    }
}

public class MyWebChromeClient extends WebChromeClient {
    @Override
    public boolean onCreateWindow (WebView view, boolean isDialog, boolean isUserGesture, Message resultMsg) {
        WebView childView = new WebView(view.getContext());
        final WebSettings settings = childView.getSettings();
        settings.setJavaScriptEnabled(true);
        childView.setWebChromeClient(this);
        childView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
        WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
        transport.setWebView(childView);
        resultMsg.sendToTarget();
        Log.d(LOG_TAG, "onCreateWindow");   // never log
        return true;
    }
}

I also definitely had my webview setSupportMultipleWindows to true.
However, onCreateWindow never got called. Is there anything I missed?
Thanks in advance.

I just wanna load new url at another webview. Honestly speaking, I copied it somewhere — fifth, Mar 21 '12 at 02:37
Try the code from this answer verbatim: http://stackoverflow.com/a/8022295/671393 — Rupert Rawnsley, Sep 26 '12 at 13:07
`childView` not adding to webview or even dialog. how can you expect to see window. try to add `webView.addView(childView);` — Mohd Qasim, Dec 31 '20 at 13:23

score 6 · Answer 1 · answered Jan 08 '14 at 19:32

6

Did you tell the "parent" webview that multiple windows are allowed?

WebView parentWebview = (WebView) findViewById(R.id.parent_webview);
// ...
parentWebview.getSettings().setSupportMultipleWindows(true);

That's the most common mistake I've seen.

answered Jan 08 '14 at 19:32

Jeremy Logan

47,151
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score 1 · Answer 2 · answered Jun 30 '14 at 11:35

1

add this line to code to invoke onCreateWindow() webView.getSettings().setSupportMultipleWindows(true);

answered Jun 30 '14 at 11:35

sharry

370
1
5
15

score 0 · Answer 3 · answered Jan 02 '14 at 07:35

Without the full code its hard to say why OnCreateWindow() isn't being called. In your activity OnCreate() method do you have code similar to the following?

    // Get the main web viewer
    mWebView = (WebView) findViewById(R.id.webViewer);

    // Enable Javascript
    WebSettings webSettings = mWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    // Set WebViewClient and WebChromClient
    mWebView.setWebViewClient(new MyWebViewClient());
    mWebView.setWebChromeClient(new MyWebChromeClient());

Also, what code are you using in which you think the OnCreateWindow() should be called?

Why Android WebChromeClient's onCreateWindow method never got called?

3 Answers3