Android编程基础之Menu功能菜单设计实例

package com.android.test;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
public class MenuDemo extends Activity {
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
 }
 // 创建菜单
 public boolean onCreateOptionsMenu(Menu menu) {
  menu.add(0, 0, 0, "关于");
  menu.add(0, 1, 1, "退出");
  return super.onCreateOptionsMenu(menu);
 }
 //菜单响应
 public boolean onOptionsItemSelected(MenuItem item) {
  super.onOptionsItemSelected(item);
  switch (item.getItemId()) {
  case 0:
   Toast.makeText(MenuDemo.this, "欢迎来到", Toast.LENGTH_LONG).show();
  case 1:
   this.finish();
  }
  return true;
 }
}