Support for other protocols in Android webview

For me the JavaScript thing wasn't a solution as the HTML is not under my control. So if you need to control this from the application side, then there is a relative simple solution: Derive from WebViewClientand inject the implementation using WebView.setWebViewClient(). All you need to override in your WebViewClientimplementation is the shouldOverrideUrlLoading method as shown here:

public boolean shouldOverrideUrlLoading(WebView view, String url) {
    if (url != null && url.startsWith("market://")) {
        view.getContext().startActivity(
            new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
        return true;
    } else {
        return false;
    }
}

For me this works fine.

HOPE THIS HELPS YOU

public boolean shouldOverrideUrlLoading(WebView view, String url) 
{
    if (url.startsWith("market://")||url.startsWith("vnd:youtube")||url.startsWith("tel:")||url.startsWith("mailto:"))
    {
        Intent intent = new Intent(Intent.ACTION_VIEW); 
        intent.setData(Uri.parse(url)); 
        startActivity(intent);
        return true;
     }
    else{
        view.loadUrl(url);
        return true;
        }
}

For the links to work you have to have the market app installed on your device/emulator. Also your app need to request a permission to access network.

UPD: as a workaround you can call java code from within the webview, for example if you generate links like this:

<a href="javascript:go('market://your.path.to.market.app')">..</a>

Define a javascript function named go():

<script type="text/javascript">
   function go(link) {
     if (handler) {
           handler.go(link);
         } else {
           document.location = link;
         }
   }
</script>

You then can pass in a handler object into the WebView:

webview.addJavascriptInterface(new Handler() {
        @Override
        public void go(String marketUrl) {
                         //start market intent here
        }
    },  "handler");

Handler interface can be defined as follows:

   public interface Handler{

    public void go(String url);

}