android 弹出式对话框实现自定义菜单栏

第一步：创建菜单项实体类(Menu)

/**
 * 菜单栏选项类
 */
public class Menu {

	//标题
	private String title;
	
	//Id（图片Id）
	private int iconID;

	public Menu(String title, int iconID) {
		super();
		this.title = title;
		this.iconID = iconID;
	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public int getIconID() {
		return iconID;
	}

	public void setIconID(int iconID) {
		this.iconID = iconID;
	}
	
	
	
}

第二步：创建弹出式窗口类（自定义菜单栏）---CustomMenu

package com.demo.custommenu;

import java.util.List;

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnKeyListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;


/**
 * 自定义弹出窗口继承PopupWindow
 */
public class CustomMenu extends PopupWindow {
    //封装GridView组件
	private GridView gvMenu;
    //封装View 组件
	private View view;
	
    /**
     * @param activity
     * @param menus
     */
    public CustomMenu(Activity activity, List<com.demo.custommenu.Menu> menus) {  
        super(activity); 
        //View 样式文件R.layout.menu
        view = activity.getLayoutInflater().inflate(R.layout.menu, null);  
        //实例化GridView组件
        gvMenu = (GridView)view.findViewById(R.id.gv_menu);
        
        //相关参数设置
        this.setContentView(view);  
        this.setWidth(LayoutParams.FILL_PARENT);  
        this.setHeight(LayoutParams.WRAP_CONTENT);
        
        //图片获取
        Drawable drawable = activity.getResources().getDrawable(R.drawable.selector_focused_shape); 
        //相关特效设置
        this.setBackgroundDrawable(drawable);
        this.setAnimationStyle(R.style.PopupAnimation);  
        this.setFocusable(true);
        
        //设置相关OnKeyListener事件
        gvMenu.setOnKeyListener(new OnKeyListener() {
			@Override
			public boolean onKey(View v, int keyCode, KeyEvent event) {
				if ((keyCode == KeyEvent.KEYCODE_MENU)&&(isShowing())) {  
					dismiss();//关闭PopupWindow弹出窗口
			        return true;  
			    }  
				return false;
			}
		});
        //自定义适配器--MenuAdapter
        adapter = new MenuAdapter(activity, menus);
        gvMenu.setAdapter(adapter);  
    }
    //GridView 为每个Item设置监听事件方法
    public void setMenuItemListener(OnItemClickListener menuClickListener) {
    	gvMenu.setOnItemClickListener(menuClickListener);  
    }
    
    
    
    private MenuAdapter adapter;
    
    public void dataUpdate() {
    	//数据设置进行相关的修改工作
    	adapter.notifyDataSetChanged();
    }
      
    /** 
     * 自定义适配器
     *  
     */  
    class MenuAdapter extends BaseAdapter {  
        
    	private List<Menu> menus;
    	
    	//自定义样式布局文件
    	private LayoutInflater layoutInflater;
    	
    	
    	
        /** 
         * ����TabMenu�ķ�ҳ���� 
         * @param context ���÷��������� 
         * @param texts ��ť���ϵ��ַ����� 
         * @param resID ��ť���ϵ�ͼ����Դ���� 
         * @param fontSize ��ť�����С 
         * @param color ��ť������ɫ 
         */  
        public MenuAdapter(Activity activity, List<Menu> menus) {  
            this.menus = menus;  
            layoutInflater = LayoutInflater.from(activity);
        }
        
        @Override
        public int getCount() {  
            return menus.size();  
        }  
        
        @Override
        public Object getItem(int position) {  
            return menus.get(position)  ;
        }  
        
        @Override
        public long getItemId(int position) {  
            return position;  
        }  
        
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {  
            MenuHolder holder = null;
            if(convertView==null) {
            	convertView = layoutInflater.inflate(R.layout.item_menu, null);
            	
            	holder = new MenuHolder();
            	holder.ivIcon = (ImageView)convertView.findViewById(R.id.iv_menu_item_icon);
            	holder.tvTitle = (TextView)convertView.findViewById(R.id.tv_menu_item_title);
            	
            	convertView.setTag(holder);
            }
            else { 
    			holder = (MenuHolder)convertView.getTag(); 
    		}
            
            holder.ivIcon.setImageResource(menus.get(position).getIconID());
            holder.tvTitle.setText(menus.get(position).getTitle());
        	return convertView;
        }
        
        class MenuHolder {
        	
        	/**
        	 * 图片组件
        	 */
        	public ImageView ivIcon;
        	
        	/**
        	 * 文本组件
        	 */
        	public TextView tvTitle;
        }
    }  
}

第三步:修改Activity样式文件------BasicActivity

package com.demo.custommenu;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;  
import android.os.Bundle;  
import android.view.Gravity;
import android.view.Menu;  
import android.widget.AdapterView.OnItemClickListener;  

public class BaseActivity extends Activity {
    //自定义弹出式菜单栏
    private CustomMenu customMenu;
    
    //样式组件
    private int parentViewID; 
    

    private List<com.demo.custommenu.Menu> menus; 
    
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        
        menus = new ArrayList<com.demo.custommenu.Menu>();

        
        customMenu = new CustomMenu(this, menus);
           
        
    }
    
    /**
     * �