1. [代码][Java]代码
01 package com.yarin.android.Examples_04_19;
02
03 import android.content.Context;
04 import android.view.View;
05 import android.view.ViewGroup;
06 import android.widget.BaseAdapter;
07 import android.widget.GridView;
08 import android.widget.ImageView;
09
10 public class ImageAdapter extends BaseAdapter
11 {
12 // 定义Context
13 private Context mContext;
14 // 定义整型数组 即图片源
15 private Integer[] mImageIds =
16 {
17 R.drawable.img1,
18 R.drawable.img2,
19 R.drawable.img3,
20 R.drawable.img4,
21 R.drawable.img5,
22 R.drawable.img6,
23 R.drawable.img7,
24 R.drawable.img8,
25 R.drawable.img1,
26 };
27
28 public ImageAdapter(Context c)
29 {
30 mContext = c;
31 }
32
33 // 获取图片的个数
34 public int getCount()
35 {
36 return mImageIds.length;
37 }
38
39 // 获取图片在库中的位置
40 public Object getItem(int position)
41 {
42 return position;
43 }
44
45
46 // 获取图片ID
47 public long getItemId(int position)
48 {
49 return position;
50 }
51
52
53 public View getView(int position, View convertView, ViewGroup parent)
54 {
55 ImageView imageView;
56 if (convertView == null)
57 {
58 // 给ImageView设置资源
59 imageView = new ImageView(mContext);
60 // 设置布局 图片120×120显示
61 imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
62 // 设置显示比例类型
63 imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
64 }
65 else
66 {
67 imageView = (ImageView) convertView;
68 }
69
70 imageView.setImageResource(mImageIds[position]);
71 return imageView;
72 }
73
74 }
2. [代码][Java]代码
01 package com.yarin.android.Examples_04_19;
02
03 import android.app.Activity;
04 import android.os.Bundle;
05 import android.view.View;
06 import android.widget.AdapterView;
07 import android.widget.GridView;
08 import android.widget.Toast;
09 import android.widget.AdapterView.OnItemClickListener;
10
11 public class Activity01 extends Activity
12 {
13 /** Called when the activity is first created. */
14 @Override
15 public void onCreate(Bundle savedInstanceState)
16 {
17 super.onCreate(savedInstanceState);
18 setContentView(R.layout.main);
19
20 //取得GridView对象
21 GridView gridview = (GridView) findViewById(R.id.gridview);
22 //添加元素给gridview
23 gridview.setAdapter(new ImageAdapter(this));
24
25 // 设置Gallery的背景
26 gridview.setBackgroundResource(R.drawable.bg0);
27
28 //事件监听
29 gridview.setOnItemClickListener(new OnItemClickListener() {
30 public void onItemClick(AdapterView<?> parent, View v, int position, long id)
31 {
32 Toast.makeText(Activity01.this, "你选择了" + (position + 1) + " 号图片", Toast.LENGTH_SHORT).show();
33 }
34 });
35 }
36 }
3. [代码][XML]代码
01 <?xml version="1.0" encoding="utf-8"?>
02 <GridView xmlns:android="http://schemas.android.com/apk/res/android"
03 android:id="@+id/gridview"
04 android:layout_width="fill_parent"
05 android:layout_height="fill_parent"
06 android:numColumns="auto_fit"
07 android:verticalSpacing="10dp"
08 android:horizontalSpacing="10dp"
09 android:columnWidth="90dp"
10 android:stretchMode="columnWidth"
11 android:gravity="center"
12 />