Android中GridView插件的使用方法

<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" >
  <gridview
    android:id="@+id/gridview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_margintop="16dp"
    android:numcolumns="4"
    android:stretchmode="columnwidth" >
  </gridview>
</relativelayout>

<?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/image"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingleft="10dp"
    android:scaletype="fitcenter"
    android:src="@drawable/ic_launcher" />
  <textview
    android:id="@+id/textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:text="textview" />
</linearlayout>

import java.util.arraylist;
import java.util.hashmap;
import java.util.list;
import java.util.map;
import android.app.activity;
import android.os.bundle;
import android.widget.gridview;
public class mainactivity extends activity {
  private gridview gridview;
  private gridviewadapter adapter;
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    // 设置适配器的图片资源
    int[] imageid = new int[] { r.drawable.chat_tool_camera,
        r.drawable.chat_tool_location, r.drawable.chat_tool_paint,
        r.drawable.chat_tool_video, r.drawable.chat_tool_voice,
        r.drawable.chat_tool_camera, r.drawable.chat_tool_location,
        r.drawable.chat_tool_paint, r.drawable.chat_tool_video,
        r.drawable.chat_tool_voice, r.drawable.chat_tool_camera,
        r.drawable.chat_tool_location, r.drawable.chat_tool_paint,
        r.drawable.chat_tool_video, r.drawable.chat_tool_voice,
        r.drawable.chat_tool_camera, r.drawable.chat_tool_location,
        r.drawable.chat_tool_paint, r.drawable.chat_tool_video,
        r.drawable.chat_tool_voice };
    // 设置标题
    string[] title = new string[] { "相机", "定位", "画笔", "视频", "声音", "相机",
        "定位", "画笔", "视频", "声音", "相机", "定位", "画笔", "视频", "声音", "相机",
        "定位", "画笔", "视频", "声音" };
    list<map<string, object>> listitem = new arraylist<map<string, object>>();
    // 将上述资源转化为list集合
    for (int i = 0; i < title.length; i++) {
      map<string, object> map = new hashmap<string, object>();
      map.put("image", imageid[i]);
      map.put("title", title[i]);
      listitem.add(map);
    }
    adapter = new gridviewadapter(mainactivity.this, listitem);
    gridview = (gridview) this.findviewbyid(r.id.gridview);
    gridview.setadapter(adapter);
  }
}

import java.util.list;
import java.util.map;
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 gridviewadapter extends baseadapter {
  private context context;
  private list<map<string, object>> listitem;
  public gridviewadapter(context context,list<map<string, object>> listitem) {
    this.context = context;
    this.listitem = listitem;
  }
  @override
  public int getcount() {
    return listitem.size();
  }
  @override
  public object getitem(int position) {
    return listitem.get(position);
  }
  @override
  public long getitemid(int position) {
    return position;
  }
  @override
  public view getview(int position, view convertview, viewgroup parent) {
    if (convertview == null) {
      convertview = layoutinflater.from(context).inflate(r.layout.gridview_item, null);
    }
    imageview imageview = (imageview) convertview.findviewbyid(r.id.image);
    textview textview = (textview) convertview.findviewbyid(r.id.textview);
    map<string, object> map = listitem.get(position);
    imageview.setimageresource((integer) map.get("image"));
    textview.settext(map.get("title") + "");
    return convertview;
  }
}