Android中GridView插件的使用方法_Android

布局文件activity_main.xml

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									<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>

gridview_item.xml

这个是一个item的单元格样式的，有图片和文字

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									<?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>

MainActivity.java

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);
}
}

GridViewAdapter.java

这个是适配器

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									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;

									  }

									}