效果如圖: Item項包含標題、描述及一個Gallery.
主配置文件(main):
- <?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">
- <!-- 解決ListView拖拽背景圖片的bug: ListView中加入android:cacheColorHint="#00000000" -->
- <!-- 給ListView每一項添加分隔線:android:divider="@color/snow" android:dividerHeight="1dip" -->
- <ListView android:id="@+id/my_lst" android:layout_width="fill_parent"
- android:layout_height="fill_parent" android:background="@drawable/bac"
- android:divider="@color/snow" android:dividerHeight="1dip"
- android:cacheColorHint="#00000000">
- </ListView>
- </LinearLayout>
ListView 的Item配置文件(items):
- <?xml version="1.0" encoding="utf-8"?>
- <RelativeLayout android:id="@+id/items"
- xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical" android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <TextView android:id="@+id/item_title" android:layout_width="wrap_content"
- android:textSize="20dip" android:layout_height="wrap_content"
- android:textColor="@color/snow" android:layout_marginLeft="10dip"
- android:layout_alignParentLeft="true" android:gravity="bottom" />
- <TextView android:id="@+id/item_describe" android:textColor="@color/snow"
- android:layout_width="wrap_content" android:textSize="15dip"
- android:layout_marginTop="5dip" android:layout_height="wrap_content"
- android:layout_marginLeft="20dip" android:layout_toRightOf="@+id/item_title"
- android:gravity="bottom" />
- <!-- 設置Gallery每一項的間距:android:spacing="10dip" -->
- <Gallery android:id="@+id/item_gallery" android:layout_width="fill_parent"
- android:layout_height="wrap_content" android:spacing="10dip"
- android:layout_below="@+id/item_title" android:layout_marginTop="20dip"
- android:layout_marginBottom="20dip" />
- </RelativeLayout>
values文件夾下colors.xml:
- <?xml version="1.0" encoding="utf-8"?>
- <resources>
- <color name="white">#ffffff</color><!--白色 -->
- <color name="snow">#fffafa</color><!--雪白色 -->
- <color name="silver">#c0c0c0</color><!--銀色 -->
- <color name="blue">#0000FF</color><!-- 藍色 -->
- <color name="skyblue">#87ceeb</color><!--天藍色 -->
- <color name="darkgrey">#a9a9a9</color><!--暗灰色 -->
- </resources>
JavaBean(ListItem),對應到每一項ListView的item項:
- package com.march.view;
-
- import java.io.InputStream;
-
- import android.content.Context;
- import android.graphics.Bitmap;
- import android.graphics.BitmapFactory;
- import android.graphics.BitmapFactory.Options;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.ImageView;
-
- public class ListItem {
- public String title, describe;
- public int[] itemImages;
- public ImageAdapter adapter;
-
- public void initAdapter(Context context) {
- this.adapter = new ImageAdapter(context);
- }
-
- public class ImageAdapter extends BaseAdapter {
- private Context mContext;
-
- public ImageAdapter(Context context) {
- this.mContext = context;
- }
-
- @Override
- public int getCount() {
- // TODO Auto-generated method stub
- return Integer.MAX_VALUE;
- }
-
- @Override
- public Object getItem(int i) {
- // TODO Auto-generated method stub
- return i;
- }
-
- @Override
- public long getItemId(int i) {
- // TODO Auto-generated method stub
- return i;
- }
-
- @Override
- public View getView(int i, View view, ViewGroup viewgroup) {
- view = new ImageView(mContext);
- ((ImageView) view).setImageBitmap(ListItem.readBitmap(mContext,
- itemImages[i % itemImages.length]));
- return view;
- }
-
- }
-
- /***
- * 以最省內存的方式讀取本地資源的圖片
- *
- * @param context
- * @param resId
- * @return
- */
- public static Bitmap readBitmap(Context context, int rid) {
- BitmapFactory.Options options = new BitmapFactory.Options();
- options.inPreferredConfig = Bitmap.Config.RGB_565;
- options.inPurgeable = true;
- options.inInputShareable = true;
- // 獲取資源圖片
- InputStream is = context.getResources().openRawResource(rid);
- return BitmapFactory.decodeStream(is, null, options);
- }
- }
MainActivity,展示界面
- package com.march.view;
-
- import java.util.ArrayList;
- import java.util.List;
-
- import android.app.Activity;
- import android.content.Context;
- import android.os.Bundle;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.Gallery;
- import android.widget.ListView;
- import android.widget.TextView;
-
- import com.march.define.R;
-
- public class MainActivity extends Activity {
- /** Called when the activity is first created. */
- private ListView myLst;
- private List<ListItem> items = new ArrayList<ListItem>();
-
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- myLst = (ListView) findViewById(R.id.my_lst);
- initItems();
- myLst.setAdapter(new CustomSimpleAdapter(this, items));
- }
-
- //默認數據,可修改
- private static final String[] titles = new String[] { "title one",
- "title two", "title three", "title four", "title five", "title six" };
- private static final String[] describes = new String[] { "describe one",
- "describe two", "describe three", "describe four", "describe five",
- "describe six" };
- private static final int[] images = new int[] { R.drawable.first,
- R.drawable.second, R.drawable.three, R.drawable.four,
- R.drawable.five, R.drawable.six };
-
- private void initItems() {
- // 初始化6個ListItem項
- ListItem item = null;
- for (int i = 0; i < 6; i++) {
- item = new ListItem();
- item.title = titles[i];
- item.describe = describes[i];
- item.itemImages = images;
- item.initAdapter(this);
- items.add(item);
- }
- }
-
- public class CustomSimpleAdapter extends BaseAdapter {
- private List<ListItem> items;
- private LayoutInflater layoutInflater;
-
- public CustomSimpleAdapter(Context context, List<ListItem> items) {
- // TODO Auto-generated constructor stub
- this.items = items;
- layoutInflater = (LayoutInflater) ((Activity) context)
- .getSystemService(LAYOUT_INFLATER_SERVICE);
- }
-
- @Override
- public int getCount() {
- return items.size();
- }
-
- @Override
- public Object getItem(int position) {
- return position;
- }
-
- @Override
- public long getItemId(int position) {
- return position;
- }
-
- @Override
- public View getView(int position, View convertView, ViewGroup parent) {
- //if (null == convertView) {
- convertView = layoutInflater.inflate(R.layout.items, null);
- ListItem item = this.items.get(position);
- TextView title = (TextView) convertView
- .findViewById(R.id.item_title);
- title.setText(item.title);
- TextView describe = (TextView) convertView
- .findViewById(R.id.item_describe);
- describe.setText(item.describe);
- Gallery gallery = (Gallery) convertView
- .findViewById(R.id.item_gallery);
- gallery.setAdapter(item.adapter);
- gallery.setSelection(Integer.MAX_VALUE / 2);
- convertView.setTag(convertView);
- /*} else {
- convertView = (View) convertView.getTag();
- Log.i("test", "go here convertView");
- }*/
- return convertView;
- }
-
- }
-
- }
源碼下載鏈接
免費下載地址在 http://linux.linuxidc.com/
用戶名與密碼都是www.linuxidc.com
具體下載目錄在 /2012年資料/8月/24日/Android 自定義ListView + Gallery 組合