Menu Inflation : Menu « UI « Android






Menu Inflation

  
/***
  Copyright (c) 2008-2009 CommonsWare, LLC
  
  Licensed under the Apache License, Version 2.0 (the "License"); you may
  not use this file except in compliance with the License. You may obtain
  a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/

package com.commonsware.android.inflation;

import android.app.Activity;
import android.os.Bundle;
import android.app.ListActivity;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
import java.util.HashMap;
import java.util.Map;

public class InflationDemo extends Activity {
  private final static Map<Integer,String> MESSAGES;
  private boolean otherStuffVisible=false;
  private Menu theMenu=null;
  
  static {
    MESSAGES=new HashMap<Integer,String>();
    MESSAGES.put(R.id.close, "I don't wanna!");
    MESSAGES.put(R.id.no_icon, "Where's my picture?");
    MESSAGES.put(R.id.later, "Quoth the Maven, \"#4\"");
    MESSAGES.put(R.id.last, "i always get picked last...");
    MESSAGES.put(R.id.non_ghost, "I ain't 'fraid of no ghost!");
    MESSAGES.put(R.id.ghost, "Boo!");
  };
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    theMenu=menu;
    
    new MenuInflater(getApplication())
                                  .inflate(R.menu.sample, menu);

    return(super.onCreateOptionsMenu(menu));
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId()==R.id.non_ghost) {
      otherStuffVisible=!otherStuffVisible;
      
      theMenu.setGroupVisible(R.id.other_stuff, otherStuffVisible);
    }
    
    String message=MESSAGES.get(item.getItemId());
    
    if (message!=null) {
      Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
      
      return(true);
    }
    
    return(super.onOptionsItemSelected(item));
  }
}

//res\layout\main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Click on the option menu and play with the choices!"
    />
</LinearLayout>



//res\menu\sample.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:id="@+id/close"
    android:title="Close"
    android:orderInCategory="3"
    android:icon="@drawable/eject" />
  <item android:id="@+id/no_icon"
    android:orderInCategory="2"
    android:title="Sans Icon" />
  <item android:id="@+id/disabled"
    android:orderInCategory="4"
    android:enabled="false"
    android:title="Disabled" />
  <group android:id="@+id/other_stuff"
    android:menuCategory="secondary"
    android:visible="false">
    <item android:id="@+id/later"
      android:orderInCategory="0"
      android:title="2nd-To-Last" />
    <item android:id="@+id/last"
      android:orderInCategory="1"
      android:title="Last" />
  </group>
  <item android:id="@+id/submenu"
    android:orderInCategory="3"
    android:title="A Submenu">
    <menu>        
      <item android:id="@+id/non_ghost"
        android:title="Non-Ghost"
        android:visible="true"
        android:alphabeticShortcut="n" />
      <item android:id="@+id/ghost"
        android:title="A Ghost"
        android:visible="false"
        android:alphabeticShortcut="g" />
    </menu>
  </item>
</menu>

   
    
  








Related examples in the same category

1.Create Option menu
2.Menu and messages
3.Context menu
4.Custom menu
5.Using Icon in Menu
6.Option Menu selection event
7.Context Menu event
8.Create Menu within your code
9.Activity Menu
10.Define menu in xml file
11.Adding submenu
12.Using Icon in menu and submenu
13.Get Menu title
14.onOptionsItemSelected/onPrepareOptionsMenu/onCreateOptionsMenu Event
15.Basics of the Action Bar and how it interoperates with the standard options menu.
16.Demonstration of displaying a context menu from a fragment.
17.Demonstrates how fragments can participate in the options menu.
18.Demonstrates inflating menus from XML.
19.Usage of SearchView in an ActionBar as a menu item.
20.This demo illustrates the use of CHOICE_MODE_MULTIPLE_MODAL