Call a public method in the Activity class from another class?

Question

MAIN ACTIVITY

    public class MyActivity() extends Activity
    {
        onCreate()
        {
            MyClass myobj=new MyClass();    
        }
               


        

Answer 1

This is probably the best way to do it. This is how I'm doing it. It's called a Singleton Design Pattern:

public class MyActivity extends Activity {
    private static MainActivity instance;

    public static MainActivity getInstance() {
     if(instance==null){
          setInstance(this);
        }
        return instance;
    }

    public static void setInstance(MainActivity instance) {
        MainActivity.instance = instance;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setInstance(this);
    }
}