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;  }}