Throwing exception when i open android webview in qt 5.2 using android extras

[kranthi]

Hi,
I am getting the following Throwable Exception when I try to display android Webview using setContentView() of android in Qt Application.

W/webview_proxy( 9549): java.lang.Throwable: Warning: A WebView method was called on thread 'Thread-845'. All WebView methods must be called on the UI thread. Future versions of WebView may not support use on other threads.
W/webview_proxy( 9549): at android.webkit.WebView.checkThread(WebView.java:1895)
W/webview_proxy( 9549): at android.webkit.WebView.ensureProviderCreated(WebView.java:1878)
W/webview_proxy( 9549): at android.webkit.WebView.setOverScrollMode(WebView.java:1935)
W/webview_proxy( 9549): at android.view.View.<init>(View.java:3346)
W/webview_proxy( 9549): at android.view.View.<init>(View.java:3422)
W/webview_proxy( 9549): at android.view.ViewGroup.<init>(ViewGroup.java:432)
W/webview_proxy( 9549): at android.widget.AbsoluteLayout.<init>(AbsoluteLayout.java:52)
W/webview_proxy( 9549): at android.webkit.WebView.<init>(WebView.java:505)
W/webview_proxy( 9549): at android.webkit.WebView.<init>(WebView.java:482)
W/webview_proxy( 9549): at android.webkit.WebView.<init>(Web

Why this is happening, Please provide the solution.

Thanks
Kranthi Talluri

[Gianluca]

The error message indicates also the solution:

"All WebView methods must be called on the UI thread."

So, you must execute the method on the UI thread. For doing so, the Android API provides the runOnUIThread method:
http://developer.android.com/reference/android/app/Activity.html#runOnUiThread(java.lang.Runnable)

[kranthi]

I written the code as follows even then it is throwing same Exception:

public void invokeview(){

 final Activity activity=this;

         webView = new WebView(this);
         new Thread() {
                    public void run() {

                            try {
                                activity.runOnUiThread(new Runnable() {

                                    @Override
                                    public void run() {
                                    webView.getSettings().setJavaScriptEnabled(true);
                                    webView.loadUrl("http://www.google.com");
                                     setContentView(webView);
                                    }
                                });

                            } catch (Exception e) {
                                e.printStackTrace();

                        }
                    }
                }.start();
}