Android開發教程：用GridView實現Gallery的效果

最近一個項目要用到Gallery的效果    由於業務的需要，必須要有GridView的功能。

1. package com.easymorse.grid.demo;  
2.   
3. import java.util.ArrayList;  
4. import java.util.HashMap;  
5.   
6. import Android.app.ListActivity;  
7. import android.os.Bundle;  
8. import android.view.LayoutInflater;  
9. import android.view.View;  
10. import android.widget.ArrayAdapter;  
11. import android.widget.GridView;  
12. import android.widget.ListView;  
13. import android.widget.SimpleAdapter;  
14.   
15. public class GridDemoActivity extends ListActivity {  
16.     /** Called when the activity is first created. */  
17.     @Override  
18.     public void onCreate(Bundle savedInstanceState) {  
19.         super.onCreate(savedInstanceState);  
20.         setContentView(R.layout.main);  
21.   
22.         LayoutInflater layoutInflater = (LayoutInflater) this  
23.                 .getSystemService("layout_inflater");  
24.         View headerView=layoutInflater.inflate(R.layout.list_header, null);  
25.         setGridView(headerView);  
26.         ListView listView=(ListView) this.findViewById(android.R.id.list);  
27.         listView.addHeaderView(headerView);  
28.         listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,new String[]{"","","","","",""}));  
29.     }  
30.   
31.     private void setGridView(View view) {  
32.         GridView gridView = (GridView) view.findViewById(R.id.grid);  
33.         gridView.setNumColumns(10);  
34.   
35.         ArrayList<HashMap<String, Object>> items = new ArrayList<HashMap<String, Object>>();  
36.   
37.         for (int i = 0; i < 10; i++) {  
38.             HashMap<String, Object> map = new HashMap<String, Object>();  
39.             map.put("ItemImage", R.drawable.k);  
40.             map.put("ItemText", "" + "(" + i + ")");  
41.             items.add(map);  
42.         }  
43.   
44.         SimpleAdapter adapter = new SimpleAdapter(this, items, R.layout.item,  
45.                 new String[] { "ItemImage", "ItemText" }, new int[] {  
46.                         R.id.ItemImage, R.id.ItemText });  
47.         gridView.setAdapter(adapter);  
48.     }  
49. }  

item.xml

1. <?xml version="1.0" encoding="utf-8"?>  
2. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:paddingBottom="10.0dip" android:layout_width="90.0dip"  
4.     android:layout_height="140.0dip">  
5.     <ImageView android:id="@+id/ItemImage" android:layout_width="80.0dip"  
6.         android:layout_height="108.0dip" android:layout_marginLeft="10.0dip"  
7.         android:layout_centerHorizontal="true">  
8.     </ImageView>  
9.     <TextView android:layout_below="@+id/ItemImage" android:id="@+id/ItemText"  
10.         android:ellipsize="end" android:layout_width="80.0dip"  
11.         android:layout_height="26.0dip" android:layout_marginTop="5.0dip"  
12.         android:singleLine="true" android:layout_centerHorizontal="true">  
13.     </TextView>  
14. </RelativeLayout>    

list_header.xml

1. <?xml version="1.0" encoding="utf-8"?>  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:orientation="vertical" android:layout_width="fill_parent"  
4.     android:layout_height="200dp">  
5.     <TextView android:layout_width="fill_parent"  
6.         android:layout_height="wrap_content" android:text="最近訪問人物" />  
7.     <HorizontalScrollView android:layout_width="fill_parent"  
8.         android:layout_height="160dp">  
9.         <FrameLayout android:layout_width="fill_parent"  
10.             android:layout_height="match_parent">  
11.             <LinearLayout android:layout_width="1100dp"  
12.                 android:layout_height="match_parent" android:orientation="horizontal">  
13.                 <GridView android:id="@+id/grid" android:layout_width="fill_parent"  
14.                     android:gravity="center" android:layout_height="fill_parent"  
15.                     android:horizontalSpacing="1.0dip" android:verticalSpacing="1.0dip"  
16.                     android:stretchMode="spacingWidthUniform" android:numColumns="auto_fit"  
17.                     android:columnWidth="80dip">  
18.                 </GridView>  
19.             </LinearLayout>  
20.         </FrameLayout>  
21.     </HorizontalScrollView>  
22. </LinearLayout>  

main,xml

1. <?xml version="1.0" encoding="utf-8"?>  
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
3.     android:orientation="vertical" android:layout_width="fill_parent"  
4.     android:layout_height="200dp">  
5.     <TextView android:layout_width="fill_parent"  
6.         android:layout_height="wrap_content" android:text="最近訪問人物" />  
7.     <HorizontalScrollView android:layout_width="fill_parent"  
8.         android:layout_height="160dp">  
9.         <FrameLayout android:layout_width="fill_parent"  
10.             android:layout_height="match_parent">  
11.             <LinearLayout android:layout_width="1100dp"  
12.                 android:layout_height="match_parent" android:orientation="horizontal">  
13.                 <GridView android:id="@+id/grid" android:layout_width="fill_parent"  
14.                     android:gravity="center" android:layout_height="fill_parent"  
15.                     android:horizontalSpacing="1.0dip" android:verticalSpacing="1.0dip"  
16.                     android:stretchMode="spacingWidthUniform" android:numColumns="auto_fit"  
17.                     android:columnWidth="80dip">  
18.                 </GridView>  
19.             </LinearLayout>  
20.         </FrameLayout>  
21.     </HorizontalScrollView>  
22. </LinearLayout>  

 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TextView android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:text="@string/hello" />
    <ListView android:layout_width="fill_parent"
        android:layout_height="fill_parent"  android:id="@android:id/list" android:cacheColorHint="#00000000"/>
</LinearLayout>