Tutorial: Add a menu

Goal

Add a menu to a newly generated app.

Prerequisites

You should have completed the Getting started with Ruboto tutorial. You can use an android device or the emulator to run your app.

This tutorial has been tested on the following configurations

ruboto	jruby-jars	Device	api-level	Tester
0.13.0	1.7.4	Samsung Galaxy S3	16	donV
0.10.0	1.7.1	Samsung Galaxy S3	15
0.10.0	1.7.1	Emulator	15
0.10.0	1.7.1	Emulator	10
0.10.1	–	Lenovo P700	15	rystraum

Create the app and run it

ruboto gen app --package org.ruboto.examples.menu_example
cd menu_example
rake install start

You should now see the familiar “What hath Matz wrought?”.

Add the menu

Add a callback for opening the menu. Edit the src/menu_example_activity.rb, and add the following method:

def onCreateOptionsMenu(menu)
  menu.add('Action 1').set_on_menu_item_click_listener do |menu_item|
    @text_view.text = menu_item.title
    toast menu_item.title
    true # Prevent other listeners from executing.
  end

  mi = menu.add('Action 2')
  mi.set_icon $package.R::drawable::get_ruboto_core
  mi.set_on_menu_item_click_listener do |menu_item|
    @text_view.text = menu_item.title
    toast menu_item.title
    true # Prevent other listeners from executing.
  end
  true # Display the menu.
end

Redeploy your app

rake install start

After your app restarts, you should be able to press the menu button to diaply a menu. Selecting any of the menu items should pop up a toast with the title of the menu item.