使用Fragment来处理Andoird app的UI布局的实例分享

<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"  
  android:orientation="vertical" 
  android:background="#7ecef4"> 
  <fragment  
    android:name="com.example.fragementexam.FragementList" 
    android:id="@+id/frag_list" 
    android:layout_width="fill_parent" 
    android:layout_height="0dp" 
    android:layout_weight="2"/> 
  <fragment  
    android:name="com.example.fragementexam.FragementDetails" 
    android:id="@+id/frag_detail" 
    android:layout_width="fill_parent" 
    android:layout_height="0dp" 
    android:layout_weight="1"/> 
</LinearLayout> 

package com.example.fragementexam; 
 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 
 
import android.app.ListFragment; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
 
public class FragementList extends ListFragment { 
  private String[] values = new String[] { "侏儒", "人类", "暗夜精灵", "矮人", "德莱尼", 
      "狼人" }; 
  private int[] images = new int[] { R.drawable.gnome, 
      R.drawable.human, R.drawable.nightelf, 
      R.drawable.dwarf, R.drawable.draenei, 
      R.drawable.werewolf }; 
 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
 
    return inflater.inflate(R.layout.frag_list, container, false); 
  } 
 
  @Override 
  public void onActivityCreated(Bundle savedInstanceState) { 
    super.onActivityCreated(savedInstanceState); 
 
    List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>(); 
    for (int i = 0; i < values.length; i++) { 
      Map<String, Object> listItem = new HashMap<String, Object>(); 
      listItem.put("values", values[i]); 
      listItem.put("images", images[i]); 
      listItems.add(listItem); 
    } 
    SimpleAdapter adapter = new SimpleAdapter(getActivity(), listItems, 
        R.layout.list_item, new String[] { "values", "images" }, 
        new int[] { R.id.txt_title, R.id.img }); 
    setListAdapter(adapter); 
 
  } 
 
  @Override 
  public void onListItemClick(ListView l, View v, int position, long id) { 
    // String item = (String) getListAdapter().getItem(position); 
    FragementDetails frag = (FragementDetails) getFragmentManager() 
        .findFragmentById(R.id.frag_detail); 
    if (frag != null && frag.isInLayout()) { 
      switch (position) { 
      case 0: 
        frag.setText(getString(R.string.Gnome)); 
        break; 
      case 1: 
        frag.setText(getString(R.string.Human)); 
        break; 
      case 2: 
        frag.setText(getString(R.string.NightElf)); 
        break; 
      case 3: 
        frag.setText(getString(R.string.Dwarf)); 
        break; 
      case 4: 
        frag.setText(getString(R.string.Draenei)); 
        break; 
      case 5: 
        frag.setText(getString(R.string.Werewolf)); 
        break; 
      } 
    } 
 
    Log.i("PDA", "position = " + position); 
  } 
 
} 

package com.example.fragementexam; 
 
import android.app.Fragment; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.TextView; 
 
 
public class FragementDetails extends Fragment { 
 
  @Override 
  public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    return inflater.inflate(R.layout.frag_detail, container,false); 
  } 
   
  public void setText(String item){ 
    TextView txt = (TextView) getView().findViewById(R.id.txt_detail); 
    txt.setText(item); 
  } 
 
   
}