Question

Hi all i have a class name

public class WikipediaDataSource extends NetworkDataSource{.....}

which extend to NetworkDataSource. what im try to do is from this class i would like to call new activity…

Intent i = new Intent(context, Obj3DView.class);
startActivity(i);

i got error saying

the method of startActivity(intent) is undefined for the type WikipediaDataSource 

i read a lot on this issue .. it happens because this class do not extend the activity clas.

i try to follow others solutions. but it does not work for my case.

Please help! 🙂

Answer 1

If this line works:

Intent i = new Intent(context, Obj3DView.class);

Then you already have access to a Context, just use:

context.startActivity(i);

Since startActivity() is a method of the Context class.

---

actually the line intent i = new Intent(context, Obj3DView.class); got error.

Often developers pass the Context in the constructor:

public class WikipediaDataSource extends NetworkDataSource {
    Context context;

    public WikipediaDataSource (Context ctx) {
        ...
        context = ctx;
    }
    ...
}

Now your code should work.