Android 按Menu弹出菜单

\res\anim\menu_in.xml    资源文件（动画）

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/decelerate_interpolator" >
    <translate
        android:duration="@android:integer/config_shortAnimTime"
        android:fromYDelta="25.0%"
        android:toYDelta="0.0" />
    <alpha
        android:duration="@android:integer/config_shortAnimTime"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />
</set>

\res\anim\menu_out.xml   资源文件（动画）

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator" >
    <translate
        android:duration="@android:integer/config_shortAnimTime"
        android:fromYDelta="0.0"
        android:toYDelta="50.0%" />
    <alpha
        android:duration="@android:integer/config_shortAnimTime"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />
</set>

\res\color\menu_text_color.xml    资源文件（颜色）

<?xml version="1.0" encoding="UTF-8"?>
<selector
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="true" android:color="#ff031e3a" />
    <item android:state_enabled="false" android:color="#ff778797" />
</selector>

\res\values\colors.xml 资源文件（颜色）

<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="discuss_blue">#295782</color>
<color name="white">#FFFFFF</color>
<color name="black">#000000</color>
<color name="discuss_writer">#778190</color>
<color name="gray">#ff888888</color>
<color name="photo_preview_select_album_layout_bg">#ff3a3a3a</color>
</resources>

\res\values\styles.xml 资源文件（样式）

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="menuTextStyle" parent="@android:style/TextAppearance.Small">
        <item name="android:textSize">12.0sp</item>
        <item name="android:textColor">@color/menu_text_color</item>
    </style>
    <style name="menushow">
        <item name="android:windowEnterAnimation">@anim/menu_in</item>
        <item name="android:windowExitAnimation">@anim/menu_out</item>
    </style>
</resources>

\res\layout\gridview_menu.xml  布局文件（gridview控件）

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/gvmenu"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:horizontalSpacing="12.0dip"
    android:listSelector="@drawable/menu_selectitem"
    android:numColumns="4"
    android:stretchMode="columnWidth"
    android:verticalSpacing="8.0dip" />

\res\layout\menu_item.xml   布局文件（gridview中的Item）

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout_Item"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:paddingTop="6.0dip"
    android:saveEnabled="false" >

    <ImageView
        android:id="@+id/item_image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true" />

    <TextView
        android:id="@+id/item_text"
        style="@style/menuTextStyle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/item_image"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="7.0dip"
        android:text="" />

</RelativeLayout>

\src\cn\mxgsa\menu\MenuInfo.java  实体类

public class MenuInfo {
    // 标题
    public String title;
    public int imgsrc;
    // 是否隐藏
    public boolean ishide;
    // menuId
    public int menuId;
    public MenuInfo(int menuId, String title,int imgsrc,Boolean ishide){
        this.menuId=menuId;
        this.title=title;
        this.imgsrc=imgsrc;
        this.ishide=ishide;
    }
}

\src\cn\mxgsa\menu\MenuUtils.java  常量资源类

import java.util.ArrayList;
import java.util.List;
import cn.mxgsa.menu.MenuInfo;

public class MenuUtils {
    public static final int MENU_SETTING=1;
    public static final int MENU_LOGOUT=2;
    public static final int MENU_HELP=3;
    public static final int MENU_EXIT=4;
    public static final int MENU_LOGIN=5;
    public static final int MENU_SERCH_FRIEND=6;
    public static final int MENU_GROUP_ACCURATE=7;
    public static final int MENU_GROUP_CATEGORY=8;
    public static final int MENU_CLEAR_LIST=9;
    public static final int MENU_ADD_FRIEND=10;
    public static final int MENU_ADD_GROUP=11;
    public static final int MENU_CHAT_HISTORY=12;
    public static final int MENU_ONE_CLOSE=13;
    public static final int MENU_MULITE_CLOSE=14;

    private static List<MenuInfo> initMenu(){
        List<MenuInfo> list=new ArrayList<MenuInfo>();
        list.add(new MenuInfo(MENU_SETTING,"设置",R.drawable.menu_ic_setting,false));
        list.add(new MenuInfo(MENU_LOGOUT,"切换用户",R.drawable.menu_ic_logout,false));
        list.add(new MenuInfo(MENU_HELP,"检查更新",R.drawable.menu_ic_help,false));
        list.add(new MenuInfo(MENU_EXIT,"退出应用",R.drawable.menu_ic_exit,false));
        return list;
    }

    /**
     * 获取当前菜单列表
     * @return
     */
    public static List<MenuInfo> getMenuList(){
        List<MenuInfo> list=initMenu();
        list.add(0,new MenuInfo(MENU_SERCH_FRIEND,"搜索好友",R.drawable.menu_ic_search_friend,false));
        list.add(0,new MenuInfo(MENU_ADD_GROUP,"添加分组",R.drawable.menu_ic_addgroup,false));
        list.add(0,new MenuInfo(MENU_ADD_FRIEND,"添加好友",R.drawable.menu_ic_addfriend,false));
        list.add(0,new MenuInfo(MENU_SERCH_FRIEND,"搜索好友",R.drawable.menu_ic_search_friend,false));

        return list;
    }

}

\src\cn\mxgsa\menu\MenuAdapter.java

import java.util.List;
import cn.mxgsa.menu.MenuInfo;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MenuAdapter extends BaseAdapter {

    private final List<MenuInfo> list;
    private final LayoutInflater inflater;
    public MenuAdapter(Context context,List<MenuInfo> list){
        this.list=list;
        inflater=LayoutInflater.from(context);
    }

    public int getCount() {
        // TODO Auto-generated method stub
        return list.size();
    }

    public Object getItem(int arg0) {
        // TODO Auto-generated method stub
        return list.get(arg0);
    }

    public long getItemId(int arg0) {
        // TODO Auto-generated method stub
        return arg0;
    }

    public View getView(int arg0, View arg1, ViewGroup arg2) {
        // TODO Auto-generated method stub
        View view=arg1;
        if (view==null) {
            view=inflater.inflate(R.layout.menu_item, null);
        }
        MenuInfo mInfo=list.get(arg0);
        ImageView iView=(ImageView)view.findViewById(R.id.item_image);
        TextView tView=(TextView)view.findViewById(R.id.item_text);
        iView.setImageResource(mInfo.imgsrc);
        tView.setText(mInfo.title);
        if (mInfo.ishide) {
            iView.setAlpha(80);
        }
        return view;
    }

}

\src\cn\mxgsa\menu\MenuLikeQQActivity.java

import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.PopupWindow;
import android.widget.Toast;

public class MenuLikeQQActivity extends Activity {

    // 定义popupwindow
    private PopupWindow popup;
    // 定义适配器
    private MenuAdapter menuAdapter;
    //菜单项列表
    private List<MenuInfo> menulists;
    //定义gridview
    private GridView menuGridView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        initPopuWindows();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        return true;
    }

    /**
     * 设置PopupWindows
     */
    private void initPopuWindows() {
        //初始化gridview
        menuGridView=(GridView)View.inflate(this, R.layout.gridview_menu, null);
        //初始化PopupWindow,LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT控制显示
        popup = new PopupWindow(menuGridView, LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
        // 设置menu菜单背景
        popup.setBackgroundDrawable(getResources().getDrawable(R.drawable.menu_background));
        // menu菜单获得焦点 如果没有获得焦点menu菜单中的控件事件无法响应
        popup.setFocusable(true);
        //设置显示和隐藏的动画
        popup.setAnimationStyle(R.style.menushow);
        popup.update();
        //设置触摸获取焦点
        menuGridView.setFocusableInTouchMode(true);
        //设置键盘事件,如果按下菜单键则隐藏菜单
        menuGridView.setOnKeyListener(new android.view.View.OnKeyListener() {
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                // TODO Auto-generated method stub
                if ((keyCode == KeyEvent.KEYCODE_MENU) && (popup.isShowing())) {
                    popup.dismiss();
                    return true;
                }
                return false;
            }

        });
        //添加菜单按钮事件
        menuGridView.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
                // TODO Auto-generated method stub
                MenuInfo mInfo = menulists.get(arg2);
                popup.dismiss();
                if (mInfo.ishide) {
                    return;
                }
                switch (mInfo.menuId) {
                case MenuUtils.MENU_ADD_FRIEND:
                    Toast.makeText(MenuLikeQQActivity.this, "添加好友", 1).show();
                    break;
                case MenuUtils.MENU_ADD_GROUP:
                    Toast.makeText(MenuLikeQQActivity.this, "添加分组", 1).show();
                    break;
                case MenuUtils.MENU_EXIT:
                    Toast.makeText(MenuLikeQQActivity.this, "退出应用", 1).show();
                    break;
                case MenuUtils.MENU_GROUP_ACCURATE:

                    break;
                case MenuUtils.MENU_GROUP_CATEGORY:

                    break;
                case MenuUtils.MENU_HELP:
                    Toast.makeText(MenuLikeQQActivity.this, "检查更新", 1).show();

                    break;
                case MenuUtils.MENU_LOGOUT:
                    Toast.makeText(MenuLikeQQActivity.this, "切换用户", 1).show();
                    break;
                case MenuUtils.MENU_SERCH_FRIEND:
                    Toast.makeText(MenuLikeQQActivity.this, "搜索好友", 1).show();
                    break;
                case MenuUtils.MENU_SETTING:
                    Toast.makeText(MenuLikeQQActivity.this, "设置", 1).show();
                    break;
                }
            }
        });
    }

    @Override
    public boolean onMenuOpened(int featureId, Menu menu) {
        if (popup != null) {
            menulists = MenuUtils.getMenuList();
            menuAdapter = new MenuAdapter(this, menulists);
            menuGridView.setAdapter(menuAdapter);
            popup.showAtLocation(this.findViewById(R.id.linearlayout), Gravity.BOTTOM, 0, 0);
        }
        return false;// 返回为true 则显示系统menu
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        menu.add("menu");
        return super.onPrepareOptionsMenu(menu);
    }
}

DEMO完整源码：http://download.csdn.net/detail/androidsj/5597723