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GridView视图(BaseAdapter)
效果图：
1.src文件夹下 ShowActivity.java文件内容：
package com.jun.activity;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import com.jun.adapter.MyAdapter;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.GridView;import android.widget.SimpleAdapter;public class ShowActivity extends Activity { private GridView gridView=null; private MyAdapter adapter=null; private SimpleAdapter adapter1=null; private List<HashMap<String,Object>> list=null; private HashMap<String,Object> map=null; private String data[]={"图片1","图片2","图片3","图片4","图片5","图6","图片7","图片8","图片9", "图片10","图片11","图片12","图片13","图片14","图片15","图片16"}; private int imgId[]={R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a, R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a, R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a,R.drawable.a}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_show); init(); setData(); }private void init(){ gridView=(GridView) findViewById(R.id.grid_view); list=new ArrayList<HashMap<String,Object>>();}private void setData(){// 使用BaseAdapter添加数据 adapter=new MyAdapter(ShowActivity.this, data, imgId); gridView.setAdapter(adapter); // 使用SimpeAdapter添加数据// for(int i=0;i<data.length;i++){// // map=new HashMap<String, Object>();// // map.put("text", data[i]);// map.put("img", imgId[i]);// list.add(map);// // }// adapter1=new SimpleAdapter(ShowActivity.this, list, R.layout.gridview_item, new String[]{"text","img"}, new int[]{R.id.gridview_text,R.id.gridview_img});// gridView.setAdapter(adapter1);} @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_show, menu); return true; }}
2.ShowActivity布局文件activity_show.xml文件内容：
<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:background="@drawable/activity_background" > <TextView android:id="@+id/title_bar_text" android:layout_width="match_parent" android:layout_height="45dip" android:layout_alignParentTop="true" android:gravity="center_vertical|center_horizontal" android:background="@drawable/theme_title_red" android:text="@string/test" android:textSize="20dip" android:textColor="#fff" tools:context=".ShowActivity" /> <GridView android:id="@+id/grid_view" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below="@+id/title_bar_text" android:layout_marginLeft="1dip" android:layout_marginRight="1dip" android:numColumns="2" android:columnWidth="5dip" android:cacheColorHint="#00000000" ></GridView> </RelativeLayout>
3.继承自BaseAdapter适配器类MyAdapter.java文件内容：
package com.jun.adapter;import com.jun.activity.R;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;public class MyAdapter extends BaseAdapter { private String data[]=null; private int imgId[]=null; private Context context=null; private LayoutInflater inflater=null; public MyAdapter(Context context,String[] data, int[] imgId) { super(); this.data =http://www.mamicode.com/ data; this.imgId = imgId; this.context = context; inflater=LayoutInflater.from(context); } @Override public int getCount() { // TODO Auto-generated method stub return data.length; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } private class Holder{ TextView tv=null; ImageView img=null; public TextView getTv() { return tv; } public void setTv(TextView tv) { this.tv = tv; } public ImageView getImg() { return img; } public void setImg(ImageView img) { this.img = img; } } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub// 获得holder以及holder对象中tv和img对象的实例 Holder holder; if(convertView==null){ convertView=inflater.inflate(R.layout.gridview_item, null); holder=new Holder(); holder.tv=(TextView) convertView.findViewById(R.id.gridview_text); holder.img=(ImageView) convertView.findViewById(R.id.gridview_img); convertView.setTag(holder); }else{ holder=(Holder) convertView.getTag(); }// 为holder中的tv和img设置内容 holder.tv.setText(data[position]); holder.img.setImageResource(imgId[position]);// 注意 默认为返回null,必须得返回convertView视图 return convertView; }}
4.GridView组件上面的布局: gridview_item.xml文件内容：
<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:background="@drawable/activity_background" ><ImageView android:id="@+id/gridview_img" android:layout_width="120dip" android:layout_height="120dip" android:layout_margin="10dip" android:background="@drawable/four_bg" android:src="@drawable/a" /> <TextView android:id="@+id/gridview_text" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/gridview_img" android:gravity="center_vertical|center_horizontal" android:textColor="#000" android:textSize="14dip" tools:context=".ShowActivity" /></RelativeLayout>
GridView视图(BaseAdapter)
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