<?xml version="1.0" encoding="utf-8"?> <AbsoluteLayout android:id="@+id/widget0" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> <GridView android:id="@+id/grid" android:layout_width="fill_parent" android:padding="30dip" android:columnWidth="52px" android:layout_height="210px" android:numColumns="5"> <!-- GridView设置为五列 边距为30pid--> </GridView> <ImageView android:id="@+id/ImageView_Big" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_x="95px" android:layout_y="250px"> </ImageView> </AbsoluteLayout>

/*定义类对象*/ private GridView my_gridview; /*从xml中获取UI资源对象*/ my_gridview = (GridView) findViewById(R.id.grid);

/*新建一个自定义的ImageAdapter*/ myImageViewAdapter = new ImageAdapter(this); /*为GridView对象设置一个ImageAdapter*/ my_gridview.setAdapter(myImageViewAdapter);

private class myImageAdapter extends BaseAdapter{ @Override public int getCount() { // TODO Auto-generated method stub return 0; } @Override public Object getItem(int position) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub return null; } }

/*为GridView添加图片Items点击事件监听器*/ my_gridview.setOnItemClickListener(this); @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub /*点击GridView中图片Items事件处理*/ }

/*为GridView添加图片Items移动选中事件监听器*/ my_gridview.setOnItemSelectedListener(this); @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,long arg3) { // TODO Auto-generated method stub /*GridView中的图片移动焦点选中时事件处理*/ } /*未选中GridView中的图片Items事件处理*/ @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub }

-----------------------------具体代码如下--------------------------------

package zyf.GridViewTest; /*导入要使用的包*/ import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; public class GridViewTest extends Activity implements GridView.OnItemClickListener, GridView.OnItemSelectedListener { /** Called when the activity is first created. */ /*定义类对象*/ private GridView my_gridview; private ImageView big_imageView; private ImageAdapter myImageViewAdapter; /*内部类，实现一个图片适配器*/ public class ImageAdapter extends BaseAdapter { /*myContext为上下文*/ private Context myContext; /*GridView用来加载图片的ImageView*/ private ImageView the_imageView; // 这是图片资源ID的数组 private Integer[] mImageIds = { R.drawable.a, R.drawable.b,R.drawable.c, R.drawable.d, R.drawable.e, R.drawable.f,R.drawable.g, R.drawable.h, R.drawable.i, R.drawable.j,R.drawable.k, R.drawable.l, R.drawable.m, R.drawable.n,R.drawable.o, R.drawable.p }; /*构造方法*/ public ImageAdapter(Context myContext) { // TODO Auto-generated constructor stub this.myContext = myContext; /*传入一个Context，本例中传入的是GridViewTest */ } /*返回资源ID数组长度*/ @Override public int getCount() { // TODO Auto-generated method stub return mImageIds.length; } /*得到Item*/ @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } /*获取Items的ID*/ @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; }
//处理gridview的每个item /*获取要显示的View对象*/ @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub /*创建一个ImageView*/ the_imageView = new ImageView(myContext); // 设置图像源于资源ID。 the_imageView.setImageResource(mImageIds[position]); /*使ImageView与边界适应*/ the_imageView.setAdjustViewBounds(true); /*设置背景图片的风格*/ the_imageView.setBackgroundResource( android.R.drawable.picture_frame); /*返回带有多个图片ID的ImageView*/ return the_imageView; } /*自定义获取对应位置的图片ID*/ public Integer getcheckedImageIDPostion(int theindex) { return mImageIds[theindex]; } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /*设置主屏布局*/ setContentView(R.layout.main); /*从xml中获取UI资源对象*/ my_gridview = (GridView) findViewById(R.id.grid); big_imageView = (ImageView) findViewById(R.id.ImageView_Big); /*新建一个自定义的ImageAdapter*/ myImageViewAdapter = new ImageAdapter(this); /*为GridView对象设置一个ImageAdapter*/ my_gridview.setAdapter(myImageViewAdapter); /*为GridView添加图片Items点击事件监听器*/ my_gridview.setOnItemClickListener(this); /*为GridView添加图片Items移动选中事件监听器*/ my_gridview.setOnItemSelectedListener(this); } @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { /*点击GridView中图片Items后显示一个AlterDialog提示框*/ new AlertDialog.Builder(this) .setTitle("图片浏览") /*获得对应的图片并显示*/ .setIcon(myImageViewAdapter.getcheckedImageIDPostion(arg2)) /*添加一个按钮*/ .setPositiveButton("返回", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } /*显示提示框*/ }).show(); } @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,long arg3) { // TODO Auto-generated method stub /*GridView中的图片移动焦点选中时， *下面的大图ImageView显示相应的大图片*/ big_imageView.setImageResource(myImageViewAdapter .getcheckedImageIDPostion(arg2)); } /*未选中GridView中的图片Items事件处理*/ @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }