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);
}
}
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希望本文所述对大家的Android程序设计有所帮助。