Call javascript function from Java

Question

I develop an app using PhoneGap. I got a service which is in background and is coded natively (the service and the phone gap app is in the same project). Unfortunatly, I wan

Answer 1

Finally I found the solution : in fact the NullPointerException was on ctx. To fix it, I setup the Context value of my object c like this :

c.setContext(use_An_Object_Of_Type_PhonegapActivity);

To get the object, I grab it from the AppActivity in this method :

public class CloudPhoneAppActivity extends DroidGap {
private class NoScaleWebViewClient extends GapViewClient {

    public NoScaleWebViewClient(DroidGap ctx) {
        super(ctx);
        myApp.ctx = ctx;
    }

    public void onScaleChanged(WebView view, float oldScale, float newScale) {
        Log.d("NoScaleWebViewClient", "Scale changed: " + String.valueOf(oldScale) + " => " + String.valueOf(newScale));
    }
}
/** other stuff after**/ 
}

So finally here is the solution :

class c = new class();
c.setContext(myApp.ctx);
c.execute("myFunction",null,null);

There is no change to do in the execute method which is describe before. But be careful of how you call the javascript function.

Erwan