android手机右上角的菜单Menu用法

android手机右上角的菜单Menu例子

1、activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="fill_parent"

   android:layout_height="fill_parent"

   android:paddingBottom="@dimen/activity_vertical_margin"

   android:paddingLeft="@dimen/activity_horizontal_margin"

   android:paddingRight="@dimen/activity_horizontal_margin"

   android:paddingTop="@dimen/activity_vertical_margin"

    android:id="@+id/root"

   tools:context="com.example.ff.MainActivity" >

</RelativeLayout>

2、MainActivity.java

package com.example.ff;

import java.util.Calendar;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.ProgressDialog;

import android.content.DialogInterface;

import android.graphics.Color;

import android.os.Bundle;

import android.view.ContextMenu;

import android.view.ContextMenu.ContextMenuInfo;

import android.view.Menu;

import android.view.MenuItem;

import android.view.SubMenu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.EditText;

import android.widget.RelativeLayout;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.Toast;

public class MainActivity extends Activity {

RelativeLayout root;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

root = (RelativeLayout) findViewById(R.id.root);

//注册上下文菜单

super.registerForContextMenu(root);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

//一级菜单

menu.add("打开");

menu.add("添加");

menu.add("电话");

menu.add("保存");

//添加子菜单

SubMenu editItem = menu.addSubMenu("编辑");

//二级菜单

editItem.add("复制");

editItem.add("剪切");

editItem.add("粘贴");

menu.add("暂停");

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

Toast.makeText(MainActivity.this, "你选中了"+item.getTitle(),

Toast.LENGTH_LONG).show();

return true;

}

}

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