android Menu

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_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"
tools:context=".MainActivity" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:id="@+id/textView"
/>

<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView"
android:layout_below="@+id/textView"
android:layout_marginTop="37dp"
android:ems="10" >

<requestFocus />
</EditText>

</RelativeLayout>

======================================

package com.example.mymenu;

import android.os.Bundle;
import android.app.Activity;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

private TextView tv1=null;
private EditText ed1=null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

tv1=(TextView)this.findViewById(R.id.textView);

this.registerForContextMenu(tv1);

ed1=(EditText)this.findViewById(R.id.editText1);

this.registerForContextMenu(ed1);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
/* add()方法的四个参数，依次是：
*
* 1、组别，如果不分组的话就写Menu.NONE,
*
* 2、Id，这个很重要，Android根据这个Id来确定不同的菜单
*
* 3、顺序，那个菜单现在在前面由这个参数的大小决定
*
* 4、文本，菜单的显示文本
*/

menu.add(Menu.NONE, Menu.FIRST + 1, 5, "删除").setIcon(

android.R.drawable.ic_menu_delete);

// setIcon()方法为菜单设置图标，这里使用的是系统自带的图标，同学们留意一下,以

// android.R开头的资源是系统提供的，我们自己提供的资源是以R开头的

menu.add(Menu.NONE, Menu.FIRST + 2, 2, "保存").setIcon(

android.R.drawable.ic_menu_edit);

menu.add(Menu.NONE, Menu.FIRST + 3, 6, "帮助").setIcon(

android.R.drawable.ic_menu_help);

menu.add(Menu.NONE, Menu.FIRST + 4, 1, "添加").setIcon(

android.R.drawable.ic_menu_add);

menu.add(Menu.NONE, Menu.FIRST + 5, 4, "详细").setIcon(

android.R.drawable.ic_menu_info_details);

menu.add(Menu.NONE, Menu.FIRST + 6, 3, "发送").setIcon(

android.R.drawable.ic_menu_send);

return true;

}

/* (non-Javadoc)
* @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub

Toast.makeText(this, item.getTitleCondensed()+ "菜单被点击了",
Toast.LENGTH_LONG).show();

return super.onOptionsItemSelected(item);
}

/* (non-Javadoc)
* @see android.app.Activity#onContextMenuClosed(android.view.Menu)
*/
@Override
public void onContextMenuClosed(Menu menu) {
// TODO Auto-generated method stub

Toast.makeText(this, "菜单走了",
Toast.LENGTH_LONG).show();
super.onContextMenuClosed(menu);
}

/* (non-Javadoc)
* @see android.app.Activity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
*/
@Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
// TODO Auto-generated method stub
menu.setHeaderIcon(android.R.drawable.ic_dialog_info);
switch (v.getId()) {
case R.id.textView:
menu.add(Menu.NONE, Menu.FIRST+7, 0, "菜单项1");
menu.add(Menu.NONE, Menu.FIRST+8, 0, "菜单项2");
menu.add(Menu.NONE, Menu.FIRST+9, 0, "菜单项3");
break;
case R.id.editText1:
menu.add(Menu.NONE, Menu.FIRST+10, 0, "菜单项4");
menu.add(Menu.NONE, Menu.FIRST+11, 0, "菜单项5");

break;
}
}

/* (non-Javadoc)
* @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
// TODO Auto-generated method stub
Toast.makeText(this,item.getTitle()+ "菜单点了",
Toast.LENGTH_LONG).show();

return super.onContextItemSelected(item);
}

}