Usage of Object invoke(Object thiz, Object[] args) method in BlackBerry

Question

Can anybody please explain me how the arguments in invoke method can use correctly.

browserField.extendScriptEngine("interesting.test", new ScriptableFunction() {

    public Object invoke(Object thiz, Object[] args) throws Exception {

        Dialog.alert("Done");

        return super.invoke(thiz, args);
    }
});

I have call above method in the HTML file as follow.

<button type="button" onclick="interesting.test()">Display Alert</button>

When I use following code

System.out.println("# thiz : " + thiz.toString());

result is

[0.0] # thiz : net.rim.device.apps.internal.browser.olympia.dom.ScriptObjectShadow@a2f32d2a

and when I use this code

System.out.println("# args : " + args.length);

the result is

[0.0] # args : 0

which prints on the Console.

I have used both those System.out method inside invoke method. Also I have refer the API documentation and still I could not understand how to pass values to those two arguments and retrieve them.

score 0 · Answer 1 · answered Apr 02 '13 at 14:43

You could try this, it worked for me

            try{

              browserField.extendScriptEngine("interesting.test", new ScriptableFunction() {

                public Object invoke(Object thiz, static Object[] args) throws Exception {

                    Dialog.alert(String.valueOf(args[0]).toString());

                 }
              });

            } catch(Exception e){
              //
            }

and then from html do this

   <button type="button" onclick="interesting.test('cool')">Display Alert</button>

because those arguments are simply array of objects that can mean having more than one parameter at the same time for flexibility purposes, its kind of similar to the arguments that is used in javascript. So try it out...

Usage of Object invoke(Object thiz, Object[] args) method in BlackBerry

1 Answers1