1 package com.example.android_menu; 2  3 import android.app.Activity; 4 import android.graphics.Color; 5 import android.os.Bundle; 6 import android.view.Menu; 7 import android.view.MenuInflater; 8 import android.view.MenuItem; 9 import android.widget.TextView;10 11 public class MyMenuActivity extends Activity {12     TextView textView;13 14     @Override15     protected void onCreate(Bundle savedInstanceState) {16         super.onCreate(savedInstanceState);17         setContentView(R.layout.contextmenuactivity);18         textView = (TextView) findViewById(R.id.itemtext);19     }20 21     /**22      * 点击菜单按键时调用的函数23      */24     @Override25     public boolean onCreateOptionsMenu(Menu menu) {26         // 菜单加载器27         MenuInflater menuInflater = new MenuInflater(getApplicationContext());28         menuInflater.inflate(R.menu.mymenu, menu);29         return super.onCreateOptionsMenu(menu);30     }31 32     /**33      * 响应菜单动作的回调函数34      */35     @Override36     public boolean onOptionsItemSelected(MenuItem item) {37         //得到Id38         switch (item.getItemId()) {39         case R.id.font10sp:40             textView.setTextSize(10);41             break;42         case R.id.font20sp:43             textView.setTextSize(20);44             break;45         case R.id.font30sp:46             textView.setTextSize(30);47             break;48         case R.id.fontblue:49             textView.setTextColor(Color.BLUE);50             break;51         case R.id.fontgreen:52             textView.setTextColor(Color.GREEN);53             break;54         case R.id.fontred:55             textView.setTextColor(Color.RED);56             break;57         }58         return super.onOptionsItemSelected(item);59     }60 }

res/menu/mymenu.xml

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点击Menu按键就会在屏幕底部弹出Menu