效果圖如下:
activity_main.xml文件
<?xml version="1.0" encoding="utf-8"?>
<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="com.mingrisoft.demo.MainActivity">
<!-- 網格視圖,3列-->
<GridView
android:id="@+id/gridview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:numColumns="3" />
</RelativeLayout>
MainActivity.java文件
package com.mingrisoft.demo;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class MainActivity extends ActionBarActivity {
//存放圖片id
private int[] picture=new int[]{
R.drawable.t1, R.drawable.t2, R.drawable.t3,
R.drawable.t4, R.drawable.t5, R.drawable.t6,
R.drawable.t7, R.drawable.t8, R.drawable.t9
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//獲取xml中的gridView
GridView gridView= (GridView) findViewById(R.id.gridview);
//數據源爲List,爲順序容器,元素爲Map,鍵爲String,值爲Object
List<Map<String,Object>> listitem=new ArrayList<Map<String,Object>>();
//將數據放入List中
for(int i=0;i<picture.length;i++)
{
//創建一個Map對象,即一個List元素
Map<String,Object> map=new HashMap<String,Object>();
map.put("image",picture[i]);
listitem.add(map);
}
//創建適配器
SimpleAdapter simpleAdapter=new SimpleAdapter(this,listitem,R.layout.cell,new String[]{"image"},new int[]{R.id.image} );
//將適配器放入gridView中
gridView.setAdapter(simpleAdapter);
}
}
cell.xml文件
<?xml version="1.0" encoding="utf-8"?>
<!-- 決定適配器的顯示內容-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
//一個單元格顯示的內容
<ImageView
android:id="@+id/image"
android:layout_width="100dp"
android:layout_height="75dp"
android:scaleType="centerCrop"
android:padding="5dp"
/>
</LinearLayout>
完成啦!製作過程與上一篇文章,製作微信好友列表是差不多一樣的,同樣是瞭解適配器應用的實例,能看到這裏你真的很棒棒哦!