Android 實現uc瀏覽器一樣的菜單

使用AlertDialog生成菜單，利用setView()方法設置菜單視圖。

布局如下：

1、菜單布局

利用GridView

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content" android:layout_height="wrap_content"
    android:orientation="vertical">
    <GridView android:id="@+id/menu"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:numColumns="2"
         android:verticalSpacing="5dip"
         android:horizontalSpacing="5dip"
         android:stretchMode="columnWidth"
         android:gravity="center"></GridView>
</LinearLayout>

<?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="wrap_content"
    android:layout_height="wrap_content" android:paddingBottom="5dip">
    <ImageView android:id="@+id/item_image"
        android:layout_centerHorizontal="true" android:layout_width="wrap_content"
        android:layout_height="wrap_content"></ImageView>
    <TextView android:layout_below="@id/item_image" android:id="@+id/item_text"
        android:layout_centerHorizontal="true" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="選項"></TextView>
</RelativeLayout>

代碼比較簡單，注釋非常詳細

package com.cloay.down.utils;

import java.util.ArrayList;
import java.util.HashMap;

import com.cloay.down.R;

import android.app.AlertDialog;
import android.content.Context;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;
/**
 * 菜單工具類
 * MenuUtil.java
 * @author cloay
 * 2011-10-25
 */
public class MenuUtil {
    private static AlertDialog menuDialog;// menu菜單Dialog
    private static GridView menuGrid;

    /** 菜單圖片 **/
    static int[] menu_image_array = { R.drawable.menu_open_in_background, R.drawable.menu_redownload, R.drawable.menu_detail, R.drawable.menu_delete };
    /** 菜單文字 **/
    static String[] menu_name_array = { "打開", "重新下載", "詳細", "刪除"};
    public static void ShowMenuDialog(final Context context){
        View menuView = View.inflate(context, R.layout.menu, null);
        menuDialog = new AlertDialog.Builder(context)
        .setView(menuView)
        .create();
        menuDialog.show();
        menuGrid  = (GridView) menuView.findViewById(R.id.menu);
        menuGrid.setAdapter(getMenuAdapter(context, menu_name_array, menu_image_array));
        menuGrid.setOnItemClickListener(new OnItemClickListener() {
            //監聽menu按鈕事件
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                switch(position){
                case 0:     //open file

                    break;
                case 1:     //redownload 重新下載

                    break;
                case 2:     //file details  

                    break;
                case 3:     //delete file

                    break;
                }
            }
        });
    }

    /**
     * 為menuGrid設置Adapter
     * @param context
     * @param menuNameArray
     * @param imageResourceArray
     * @return
     */
    private static SimpleAdapter getMenuAdapter(Context context, String[] menuNameArray,
            int[] imageResourceArray) {
        ArrayList<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();
        for (int i = 0; i < menuNameArray.length; i++) {
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("itemImage", imageResourceArray[i]);
            map.put("itemText", menuNameArray[i]);
            data.add(map);
        }
        SimpleAdapter simperAdapter = new SimpleAdapter(context, data,
                R.layout.item_menu, new String[] { "itemImage", "itemText" },
                new int[] { R.id.item_image, R.id.item_text });
        return simperAdapter;
    }
}