<?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="horizontal">

<fragment class="com.xuzhi.fragment.FragmentDemoActivity$TitlesFragment" android:id="@+id/titles" android:layout_weight="1"
      android:layout_width="0px" android:layout_height="match_parent"
/>

<FrameLayout android:id="@+id/details" android:layout_weight="1" android:layout_width="0px" android:layout_height="match_parent"
      android:background="?android:attr/detailsElementBackground"
></FrameLayout>
</LinearLayout>

package com.xuzhi.fragment;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.ScrollView;
import android.widget.TextView;

publicclass FragmentDemoActivity extends Activity {

publicstatic String[] array = { "text1,", "text2", "text3", "text4",
           "text5,", "text6", "text7", "text8" };

/** Called when the activity is first created. */
   @Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
   }

publicstaticclass TitlesFragment extends ListFragment {

boolean mDualPane;
int mCurCheckPosition = 0;

@Override
publicvoid onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
           System.out.println("Fragment-->onCreate");
       }

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
               Bundle savedInstanceState) {
// TODO Auto-generated method stub
           System.out.println("Fragment-->onCreateView");
returnsuper.onCreateView(inflater, container, savedInstanceState);
       }

@Override
publicvoid onPause() {
// TODO Auto-generated method stub
super.onPause();
           System.out.println("Fragment-->onPause");
       }

@Override
publicvoid onStop() {
// TODO Auto-generated method stub
super.onStop();

System.out.println("Fragment-->onStop");
       }

@Override
publicvoid onAttach(Activity activity) {
// TODO Auto-generated method stub
super.onAttach(activity);
           System.out.println("Fragment-->onAttach");
       }

@Override
publicvoid onStart() {
// TODO Auto-generated method stub
super.onStart();
           System.out.println("Fragment-->onStart");
       }

@Override
publicvoid onResume() {
// TODO Auto-generated method stub
super.onResume();
           System.out.println("Fragment-->onResume");
       }

@Override
publicvoid onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
           System.out.println("Fragment-->onDestroy");
       }

@Override
publicvoid onActivityCreated(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onActivityCreated(savedInstanceState);
           System.out.println("Fragment-->onActivityCreted");
           setListAdapter(new ArrayAdapter<String>(getActivity(),
                   android.R.layout.simple_list_item_1, array));

View detailsFrame = getActivity().findViewById(R.id.details);

mDualPane = detailsFrame != null
                   && detailsFrame.getVisibility() == View.VISIBLE;

if (savedInstanceState != null) {
               mCurCheckPosition = savedInstanceState.getInt("curChoice", 0); //从保存的状态中取出数据
           }

if (mDualPane) {
               getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);

showDetails(mCurCheckPosition);
           }
       }

@Override
publicvoid onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);

outState.putInt("curChoice", mCurCheckPosition);//保存当前的下标
       }

@Override
publicvoid onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
           showDetails(position);
       }

void showDetails(int index) {
           mCurCheckPosition = index;
if (mDualPane) {
               getListView().setItemChecked(index, true);
               DetailsFragment details = (DetailsFragment) getFragmentManager()
                       .findFragmentById(R.id.details);
if (details == null || details.getShownIndex() != index) {
                   details = DetailsFragment.newInstance(mCurCheckPosition);

//得到一个fragment 事务（类似sqlite的操作）
                   FragmentTransaction ft = getFragmentManager()
                           .beginTransaction();
                   ft.replace(R.id.details, details);//将得到的fragment 替换当前的viewGroup内容，add则不替换会依次累加
                   ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);//设置动画效果
                   ft.commit();//提交
               }
           } else {
new AlertDialog.Builder(getActivity()).setTitle(
                       android.R.string.dialog_alert_title).setMessage(
                       array[index]).setPositiveButton(android.R.string.ok,
null).show();
           }
       }
   }

/**
    * 作为界面的一部分，为fragment 提供一个layout
    * @author terry
    *
*/
publicstaticclass DetailsFragment extends Fragment {

publicstatic DetailsFragment newInstance(int index) {
           DetailsFragment details = new DetailsFragment();
           Bundle args = new Bundle();
           args.putInt("index", index);
           details.setArguments(args);
return details;
       }

publicint getShownIndex() {
return getArguments().getInt("index", 0);
       }

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
               Bundle savedInstanceState) {
// TODO Auto-generated method stub
if (container == null)
returnnull;

ScrollView scroller = new ScrollView(getActivity());
           TextView text = new TextView(getActivity());

int padding = (int) TypedValue.applyDimension(
                   TypedValue.COMPLEX_UNIT_DIP, 4, getActivity()
                           .getResources().getDisplayMetrics());
           text.setPadding(padding, padding, padding, padding);
           scroller.addView(text);

text.setText(array[getShownIndex()]);
return scroller;
       }
   }
}