Android开发教程：用GridView实现Gallery的效果


最近一个项目要用到Gallery的效果    由于业务的需要，必须要有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="最近访问人物" />  
  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="最近访问人物" />  
  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>

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