Android ListFragment实例Demo（自定义适配器）

上一篇文章介绍了ListFragment，其中的ListView并没有自定义适配器，实际上在实际开发中常会用到自定义适配器，是实现更复杂的列表数据展示。所以这篇文章增加了自定义适配器，来进行ListView数据的展示。

实现效果图：

左边是Activity中的一个按钮，点击按钮会出现右边的Fragment相应的数据列表。

代码展示：

布局文件：

activity_main:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >    <LinearLayout        android:id="@+id/left"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="1"        android:orientation="vertical"         android:background="#DDCCFF">        <Button            android:id="@+id/button1"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="显示列表" />    </LinearLayout>    <LinearLayout        android:id="@+id/right"        android:layout_width="0dp"        android:layout_height="match_parent"        android:layout_weight="2"        android:orientation="vertical"         android:background="#DDFFCC">    </LinearLayout></LinearLayout>

article.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >    <ListView        android:id="@id/android:list"        android:layout_width="match_parent"        android:layout_height="wrap_content" >    </ListView></LinearLayout>

item.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >   <TextView        android:id="@+id/textView"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:textSize="20sp"/></LinearLayout>

代码文件：

package com.fragmentdemo9_listfragment2;import android.app.Activity;import android.app.FragmentManager;import android.app.FragmentTransaction;import android.os.Bundle;import android.view.View;import android.widget.Button;/** *ListFragment的实例Demo优化版一。  * */public class MainActivity extends Activity {private Button button;private FragmentManager manager;private FragmentTransaction transaction;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);manager = getFragmentManager();button = (Button) findViewById(R.id.button1);button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {transaction = manager.beginTransaction();ArticleListFragment articleListFragment = new ArticleListFragment();transaction.replace(R.id.right, articleListFragment, "right");transaction.commit();}});}}

ArticleListFragment.java：

package com.fragmentdemo9_listfragment2;import java.util.ArrayList;import android.app.ListFragment;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ListView;import android.widget.Toast;/** * 本例中的唯一一个Fragment * @author Administrator * */public class ArticleListFragment extends ListFragment {private MyAdapter adapter;private ArrayList<String> list = new ArrayList<String>();@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);for (int i = 0; i < 30; i++) {list.add("item" + i);}adapter = new MyAdapter(getActivity(), list);}@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view = inflater.inflate(R.layout.article, null);setListAdapter(adapter);return view;}@Overridepublic void onListItemClick(ListView l, View v, int position, long id) {super.onListItemClick(l, v, position, id);Toast.makeText(getActivity(), list.get(position), Toast.LENGTH_SHORT).show();}}

MyAdapter：

package com.fragmentdemo9_listfragment2;import java.util.ArrayList;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;/** * 自定义适配器MyAdapter * */public class MyAdapter extends BaseAdapter {private ArrayList<String> list;private Context context;public MyAdapter(Context context, ArrayList<String> list) {this.list = list;this.context = context;}@Overridepublic int getCount() {return list.size();}@Overridepublic Object getItem(int position) {return list.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder = new ViewHolder();;if (convertView == null) {convertView = LayoutInflater.from(context).inflate(R.layout.item,null);holder.textView = (TextView) convertView.findViewById(R.id.textView);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}holder.textView.setText(list.get(position).toString());return convertView;}class ViewHolder {TextView textView;}}

源代码下载：

点击下载源码