本文实例讲述了Android中OptionMenu用法。分享给大家供大家参考。具体如下:
1、无需设置布局文件
2、创建一个类,基础Activity
3、重写onOptionsItemSelected方法,在这个方法里面添加菜单项
4、如果需要给菜单项添加单击事件,需要重写onOptionsItemSelected方法
MenuDemoActivity.java如下:
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package com.yyl; import Android.app.Activity; import Android.os.Bundle; import Android.view.Menu; import Android.view.MenuItem; public class MenuDemoActivity extends Activity { public static final int EIGHT_ID = Menu.FIRST+ 1 ; public static final int SIXTEEN_ID = Menu.FIRST+ 2 ; public static final int TWENTY_FOUR_ID = Menu.FIRST+ 3 ; public static final int TWO_ID = Menu.FIRST+ 4 ; public static final int THIRTY_TWO_ID = Menu.FIRST+ 5 ; public static final int FORTY_ID = Menu.FIRST+ 6 ; public static final int ONE_ID = Menu.FIRST+ 7 ; @Override public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.main); } //创建OptionsMenu @Override public boolean onCreateOptionsMenu(Menu menu) { this .populateMenu(menu); return super .onCreateOptionsMenu(menu); } //单击事件 @Override public boolean onOptionsItemSelected(MenuItem item) { int itemId = item.getItemId(); System.out.println(itemId); return super .onOptionsItemSelected(item); } private void populateMenu(Menu menu) { menu.add(Menu.NONE, ONE_ID, Menu.NONE, "1 Pixel" ); menu.add(Menu.NONE, TWO_ID, Menu.NONE, "2 Pixels" ); menu.add(Menu.NONE, EIGHT_ID, Menu.NONE, "8 Pixels" ); menu.add(Menu.NONE, SIXTEEN_ID, Menu.NONE, "16 Pixels" ); menu.add(Menu.NONE, TWENTY_FOUR_ID, Menu.NONE, "24 Pixels" ); menu.add(Menu.NONE, THIRTY_TWO_ID, Menu.NONE, "32 Pixels" ); menu.add(Menu.NONE, FORTY_ID, Menu.NONE, "40 Pixels" ); } @Override public boolean onMenuItemSelected( int featureId, MenuItem item) { //得到点击的菜单项的ID(此Id是自己设定的) int itemId = item.getItemId(); if (ONE_ID == itemId) { System.out.println( "您选择了 1 Pixel 菜单" ); } return super .onMenuItemSelected(featureId, item); } } |
希望本文所述对大家的Android程序设计有所帮助。