ListFragment繼承了Fragment，顧名思義，ListFragment是一種特殊的Fragment，它包含了一個ListView，在ListView里面顯示數據。

1. MainActivity

Java類文件：

package com.example.hzhi.fragmentdemo;import android.app.Activity; import android.os.Bundle; import android.app.FragmentManager; import android.app.FragmentTransaction;public class MainActivity extends Activity {private FragmentManager manager;private FragmentTransaction transaction;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);manager = getFragmentManager();transaction = manager.beginTransaction();ListFragmentImpl frgImpl = new ListFragmentImpl();ListFragmentSelf frgSelf = new ListFragmentSelf();transaction.add(R.id.fragment1, frgImpl, "frgImpl");transaction.add(R.id.fragment2, frgSelf, "frgSelf");transaction.commit();}}

xml布局文件：

<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"android:orientation="horizontal" ><LinearLayoutandroid:id="@+id/fragment1"android:layout_weight="1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"/><LinearLayoutandroid:id="@+id/fragment2"android:layout_weight="1"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"/></LinearLayout>

可見MainActivity是比較簡單的，在布局里面放了左右兩個ListFragment。

2. ListFragment

2.1 左邊的ListFragment

Java類文件：

package com.example.hzhi.fragmentdemo;import android.app.ListFragment; import android.widget.ListView; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.util.Log; import android.widget.Toast; import android.widget.SimpleAdapter;import java.util.Map; import java.util.HashMap; import java.util.List; import java.util.ArrayList;public class ListFragmentImpl extends ListFragment{private static final String TAG = "ListFragmentImpl";private ListView selfList;String[] classes = {"計算機網絡","操作系統","C語言","Java","數據庫原理","移動開發",};@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {Log.d(TAG, "onCreateView");return inflater.inflate(R.layout.list_fragment_impl, container, false);}@Overridepublic void onCreate(Bundle savedInstanceState) {Log.d(TAG, "onCreate");super.onCreate(savedInstanceState);// 設置ListFragment默認的ListView，即@id/android:listthis.setListAdapter(new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, classes));}public void onListItemClick(ListView parent, View v,int position, long id) {Log.d(TAG, "onListItemClick");// 找到ListFragmentSelfListFragmentSelf listFragmentSelf = (ListFragmentSelf) getFragmentManager().findFragmentByTag("frgSelf");listFragmentSelf.flushData(position);}}

布局文件：

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><!-- ListFragment對應的android:id值固定為"@id/android:list" --><ListViewandroid:id="@id/android:list"android:layout_width="match_parent"android:layout_height="match_parent"android:drawSelectorOnTop="false"/></LinearLayout>

2.2 右邊的ListFragment

Java類文件：

package com.example.hzhi.fragmentdemo;import android.app.ListFragment; import android.widget.ListView; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.util.Log; import android.widget.SimpleAdapter;import java.util.Map; import java.util.HashMap; import java.util.List; import java.util.ArrayList;public class ListFragmentSelf extends ListFragment{private static final String TAG = "ListFragmentImpl";private ListView selfList;final String[] from = new String[] {"name", "title", "info", "picture"};final int[] to = new int[] {R.id.text0, R.id.text1, R.id.text2, R.id.picture};private String[] tname = new String[]{"計算機網絡", "操作系統", "C語言", "Java", "數據庫原理", "移動開發"};private String[] ttitle = new String[]{"張三", "李四", "王五", "Tom", "Mike", "Peter"};private String[] ttime = new String[]{"160", "50", "40", "200", "180", "150"};private int[] pic = new int[]{R.drawable.jsjwl, R.drawable.czxt, R.drawable.cyy,R.drawable.java, R.drawable.sjkyl, R.drawable.ydkf};@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {Log.d(TAG, "onCreateView");return inflater.inflate(R.layout.list_fragment_self, container, false);}@Overridepublic void onCreate(Bundle savedInstanceState) {Log.d(TAG, "onCreate");super.onCreate(savedInstanceState);flushData(0);}public void onListItemClick(ListView parent, View v,int position, long id) {Log.d(TAG, "onListItemClick");}public void flushData(int p){// 建立SimpleAdapter，將from和to對應起來SimpleAdapter adapter = new SimpleAdapter(this.getActivity(), getSimpleData(p),R.layout.list_item, from, to);this.setListAdapter(adapter);}private List<Map<String, Object>> getSimpleData(int p) {List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();Map<String, Object> map = new HashMap<String, Object>();map.put("title", "課程名稱");map.put("info", tname[p]);list.add(map);map = new HashMap<String, Object>();map.put("title", "教師姓名");map.put("info", ttitle[p]);list.add(map);map = new HashMap<String, Object>();map.put("title", "學時");map.put("info", ttime[p]);list.add(map);map = new HashMap<String, Object>();map.put("title", "圖片");map.put("picture", pic[p]);list.add(map);return list;} }

布局文件：

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><!-- ListFragment對應的android:id值固定為"@id/android:list" --><ListViewandroid:id="@id/android:list"android:layout_width="match_parent"android:layout_height="match_parent"android:drawSelectorOnTop="false"/></LinearLayout>

行布局文件：

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical" ><TextView android:id="@+id/text0"android:textSize="12sp"android:textStyle="bold"android:layout_width="match_parent"android:layout_height="wrap_content"/><TextView android:id="@+id/text1"android:textSize="12sp"android:textStyle="bold"android:layout_width="match_parent"android:layout_height="wrap_content"/><TextView android:id="@+id/text2"android:textSize="24sp"android:layout_width="match_parent"android:layout_height="wrap_content"/><ImageViewandroid:id="@+id/picture"android:layout_width="wrap_content"android:layout_height="wrap_content"android:paddingLeft="10dp" /></LinearLayout>

最重要的方法是，當點擊左邊ListFragment的某一行時，取得改行的position，然后根據Tag找到右邊的ListFragment，并調用flushData()方法，使右邊的ListFragment刷新數據。

3. 運行結果

?

轉載于:https://www.cnblogs.com/mstk/p/5789265.html

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