android-一个简单的手机桌面（GridView+SimpleAdapter）

activity_main

<?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"
android:background="@drawable/rrrr"
>

<GridView
android:layout_marginTop="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:horizontalSpacing="10dp"
android:numColumns="3"
android:verticalSpacing="10dp"
android:id="@+id/gridview">
</GridView>
</LinearLayout>


androidmanifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.wuzuo.zhuomian">

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@android:style/Theme.NoTitleBar">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>


MainActivity
package com.example.wuzuo.zhuomian;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends Activity implements AdapterView.OnItemClickListener{
private GridView gridView;
private SimpleAdapter simpleAdapter;
private List<Map<String,Object>> dataList;
private int[] icon={R.drawable.address_book,R.drawable.calendar,R.drawable.camera,R.drawable.clock,R.drawable.games_control,R.drawable.messenger,R.drawable.ringtone,R.drawable.settings,R.drawable.speech_balloon,R.drawable.weather,R.drawable.world,R.drawable.youtube};
private String[] iconName={"通讯录","日历","相机","时钟","游戏","联系人","铃声","设置","短信","天气","浏览器","视频"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gridView= (GridView) findViewById(R.id.gridview);
dataList=new ArrayList<Map<String, Object>>() ;
simpleAdapter=new SimpleAdapter(this,getdata(),R.layout.main,new String[]{"image1","text1"},new int[]{R.id.image1,R.id.text1});
gridView.setAdapter(simpleAdapter);
gridView.setOnItemClickListener(this);

}
private List<Map<String,Object>> getdata()
{
for(int i=0;i<iconName.length;i++)
{
Map<String,Object>map=new HashMap<String, Object>();
map.put("image1",icon[i]);
map.put("text1",iconName[i]);
dataList.add(map);
}
return dataList;
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(this," "+iconName[position],Toast.LENGTH_SHORT).show();
}
}
main

<?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"
android:background="#00000000"
android:gravity="center">
<ImageView
android:layout_width="60dp"
android:id="@+id/image1"
android:layout_height="60dp"
android:src="@mipmap/ic_launcher"/>
<TextView
android:layout_marginTop="5dp"
android:layout_width="60dp"
android:layout_height="60dp"
android:id="@+id/text1"
android:textColor="#ffffff"
android:text="文字"
android:gravity="center"/>

</LinearLayout>