使用网格视图控件GridView

网格视图控件的功能使将很多张指定的图片以指定的大小显示出来。
1、布局文件grid_view.xml

<?xml version="1.0" encoding="utf-8"?>        <GridView xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/grid_view"    android:layout_width="fill_parent"     android:layout_height="fill_parent"    android:numColumns="auto_fit"    android:verticalSpacing="10dp"    android:horizontalSpacing="10dp"    android:columnWidth="90dp"    android:stretchMode="columnWidth"    android:gravity="center"/>

2、程序文件GridViewActivity.java

package com.example.chong;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.GridView;import android.widget.ImageView;import android.widget.TextView;public class GridViewActivity extends Activity {/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setTitle("ImageViewActivity");setContentView(R.layout.grid_view);GridView gridView = (GridView)findViewById(R.id.grid_view);gridView.setAdapter(new ImageAdapter(this));}public class ImageAdapter extends BaseAdapter {private Context mContext;private Integer[] mThumbIds = {R.drawable.grid_view_01,R.drawable.grid_view_02,R.drawable.grid_view_03,R.drawable.grid_view_04,R.drawable.grid_view_05,R.drawable.grid_view_06,R.drawable.grid_view_07,R.drawable.grid_view_08,R.drawable.grid_view_09,R.drawable.grid_view_10,R.drawable.grid_view_11,R.drawable.grid_view_12,R.drawable.grid_view_13,R.drawable.grid_view_14,R.drawable.grid_view_15,R.drawable.sample_1,R.drawable.sample_2,R.drawable.sample_3,R.drawable.sample_4,R.drawable.sample_5,R.drawable.sample_6,R.drawable.sample_7};public ImageAdapter(Context c){mContext=c;}public int getCount(){return mThumbIds.length;}public View getView(int position,View convertView,ViewGroup parent){ImageView imageView;if(convertView==null){imageView = new ImageView(mContext);imageView.setLayoutParams(new GridView.LayoutParams(85,85));imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);imageView.setPadding(8,8,8,8);}else {imageView = (ImageView)convertView;}imageView.setImageResource(mThumbIds[position]);return imageView;}}}