get Overflow Menu Button - Android User Interface

Android examples for User Interface:Menu

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  2. Android
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Description

get Overflow Menu Button

Demo Code


//package com.java2s;
import java.lang.reflect.Field;
import android.app.Activity;
import android.view.View;
import android.view.ViewParent;

public class Main {
    public static View getOverflowMenuButton(Activity a) {
        return getOverflowButtonInternal(getMenuPresenter(a));
    }//ww  w .ja  va2  s.  c  om

    private static View getOverflowButtonInternal(Object menuPresenterView) {
        try {
            Field overflowField = menuPresenterView.getClass()
                    .getDeclaredField("mOverflowButton");
            overflowField.setAccessible(true);
            View overFlowButtonView = (View) overflowField
                    .get(menuPresenterView);
            return overFlowButtonView;
        } catch (NoSuchFieldException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;

    }

    private static Object getMenuPresenter(Activity a) {
        View homeButton = a.findViewById(android.R.id.home);
        ViewParent parentOfHome = homeButton.getParent().getParent(); //ActionBarView is parent of home ImageView, see layout file in sources
        try {
            if (!parentOfHome.getClass().getName()
                    .contains("ActionBarView")) {
                parentOfHome = parentOfHome.getParent();
                Class<?> absAbv = parentOfHome.getClass().getSuperclass(); //ActionBarView -> AbsActionBarView class
                Field menuPresenter = absAbv
                        .getDeclaredField("mActionMenuPresenter");
                // ActionMenuPresenter is the object that calls openOverflowMenu() closeOverflowMenu()
                menuPresenter.setAccessible(true); // and contains the overflow button view.
                Object menuPresenterView = menuPresenter.get(parentOfHome);
                return menuPresenterView;
            }
        } catch (NoSuchFieldException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
}

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