Android 创建菜单栏

package com.example.Menudemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// // Inflate the menu; this adds items to the action bar if it is
// present.
// getMenuInflater().inflate(R.menu.main, menu);
menu.add(1, 1001, 0, "菜单1");
menu.add(1, 1002, 0, "菜单2");
menu.add(1, 1003, 0, "菜单3");
menu.add(1, 1004, 0, "菜单4");
menu.add(1, 1005, 0, "菜单5");
menu.add(1, 1006, 0, "菜单6");
menu.add(1, 1007, 0, "菜单7");

return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// // Handle action bar item clicks here. The action bar will
// // automatically handle clicks on the Home/Up button, so long
// // as you specify a parent activity in AndroidManifest.xml.
// int id = item.getItemId();
// if (id == R.id.action_settings) {
// return true;
// }
int id = item.getItemId();
switch (id) {
case 1001:
Toast.makeText(getApplicationContext(), "这是菜单1", Toast.LENGTH_SHORT).show();
break;
case 1002:

Toast.makeText(getApplicationContext(), "这是菜单2", Toast.LENGTH_SHORT).show();

break;
case 1003:
Toast.makeText(getApplicationContext(), "这是菜单3", Toast.LENGTH_SHORT).show();
break;
case 1004:
Toast.makeText(getApplicationContext(), "这是菜单4", Toast.LENGTH_SHORT).show();
break;
case 1005:
Toast.makeText(getApplicationContext(), "这是菜单5", Toast.LENGTH_SHORT).show();
break;
case 1006:
Toast.makeText(getApplicationContext(), "这是菜单6", Toast.LENGTH_SHORT).show();
break;
case 1007:
Toast.makeText(getApplicationContext(), "这是菜单7", Toast.LENGTH_SHORT).show();
break;

default:
break;
}

return super.onOptionsItemSelected(item);
}
}