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<?xml version="1.0"
encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"
>

    <ImageView

        android:id="@+id/ItemImageView"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_gravity="center"/>

    <TextView

        android:id="@+id/ItemTextView"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:gravity="center"/>

</LinearLayout>

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".MainActivity"
>

    <LinearLayout

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginLeft="12dp"

            android:layout_marginRight="12dp"

            android:background="@color/white"

            android:orientation="horizontal"

            android:gravity="top">

            <GridView

                android:id="@+id/gridview_main_menu"

                android:layout_width="fill_parent"

                android:layout_height="wrap_content"

                android:columnWidth="90dp"

                android:stretchMode="columnWidth"

                android:numColumns="4"

                android:horizontalSpacing="10dp"

                android:gravity="center_horizontal"

                >

            </GridView>

        </LinearLayout>

</RelativeLayout>

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package
com.example.androidui2;

import
java.util.ArrayList;

import
java.util.HashMap;

import
java.util.List;

import
android.os.Bundle;

import
android.app.Activity;

import
android.view.Menu;

import
android.view.View;

import
android.widget.AdapterView;

import
android.widget.GridView;

import
android.widget.SimpleAdapter;

import
android.widget.Toast;

import
android.widget.AdapterView.OnItemClickListener;

public
class MainActivity extends Activity

{

    private
GridView mainMenuGridView;

    private
int[] mainMenuImageRes = {R.drawable.circle,R.drawable.circle,R.drawable.circle,R.drawable.circle};

    private
String[] mainMenuStrs  = {"拨号","所有联系人","使用说明","退出"};

    @Override

    protected
void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        mainMenuGridView
= (GridView)findViewById(R.id.gridview_main_menu);

        initView();

    }

    //
init views

    private
void initView()

    {

        //
init main-menu

        List<HashMap<String,
Object>> datas = new ArrayList<HashMap<String,Object>>();

        int
length = mainMenuStrs.length;

        for
(int i = 0; i < length;
i++)

        {

            HashMap<String,
Object> map = new HashMap<String,
Object>();

            map.put("ItemImageView",
mainMenuImageRes[i]);

            map.put("ItemTextView",
mainMenuStrs[i]);

            datas.add(map);

        }

        SimpleAdapter
menuAdapter = new SimpleAdapter(

                MainActivity.this,datas,


                R.layout.main_menu_item,


                new
String[]{"ItemImageView","ItemTextView"},

                new
int[]{R.id.ItemImageView,R.id.ItemTextView} );

        mainMenuGridView.setAdapter(menuAdapter);

        mainMenuGridView.setOnItemClickListener(new
MainMenuItemOnClick());

    }

    //
Main Menu Item On Click Function

    public
class MainMenuItemOnClick implements OnItemClickListener

    {

        /**
arg0 : The AdapterView where the click happened 

        *  
arg1 : The view within the AdapterView that was clicked

        *  
arg2 : The position of the view in the adapter

        *  
arg3 : The row id of the item that was clicked

        **/

        public
void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

                long
arg3)

        {

            HashMap<String,
Object> item = (HashMap<String,
Object>)arg0.getItemAtPosition(arg2);

            if
(item.get("ItemTextView").equals(mainMenuStrs[0]))

            {

                 Toast.makeText(getApplicationContext(),
mainMenuStrs[0], 

                            Toast.LENGTH_SHORT).show(); 


            }

            if
(item.get("ItemTextView").equals(mainMenuStrs[1]))

            {

                 Toast.makeText(getApplicationContext(),
mainMenuStrs[1], 

                            Toast.LENGTH_SHORT).show(); 


            }

            if
(item.get("ItemTextView").equals(mainMenuStrs[2]))

            {

                 Toast.makeText(getApplicationContext(),
mainMenuStrs[2], 

                            Toast.LENGTH_SHORT).show(); 


            }

            if
(item.get("ItemTextView").equals(mainMenuStrs[3]))

            {

                 Toast.makeText(getApplicationContext(),
mainMenuStrs[3], 

                            Toast.LENGTH_SHORT).show(); 


            }

        }

    }

    @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);

        return
true;

    }

}

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private
int[] mainMenuImageRes = {R.drawable.circle,R.drawable.circle,R.drawable.circle,R.drawable.circle};

    private
String[] mainMenuStrs  = {"拨号","所有联系人","使用说明","退出"};

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SimpleAdapter
menuAdapter = new SimpleAdapter(

                MainActivity.this,datas,


                R.layout.main_menu_item,


                new
String[]{"ItemImageView","ItemTextView"},

                new
int[]{R.id.ItemImageView,R.id.ItemTextView} );

        mainMenuGridView.setAdapter(menuAdapter);

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HashMap<String,
Object> item = (HashMap<String,
Object>)arg0.getItemAtPosition(arg2);

            if
(item.get("ItemTextView").equals(mainMenuStrs[0]))