android 中Fragment 的简单使用

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

}
}

package com.sunplus.app.activity;

import android.app.FragmentTransaction;
import android.app.ListFragment;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.sunplus.app.util.LeftTitle;

public class TitlesFragment extends ListFragment {

@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);

// Populate list with our static array of titles.
setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_activated_1, LeftTitle.DEVICENAME));

}

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
showDetails(position);
}

private void showDetails(int index) {

// Check what fragment is currently shown, replace if needed.
DetailsFragment details = (DetailsFragment) getFragmentManager().findFragmentById(R.id.details);
if (details == null || details.getShownIndex() != index) {
// Make new fragment to show this selection.
details = DetailsFragment.newInstance(index);

// Execute a transaction, replacing any existing fragment
// with this one inside the frame.
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.details, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}

}

}

package com.sunplus.app.activity;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.sunplus.app.adapter.GetDetailData;

public class DetailsFragment extends Fragment {

/**
* Create a new instance of DetailsFragment, initialized to show the text at
* 'index'.
*/
public static DetailsFragment newInstance(int index) {
DetailsFragment f = new DetailsFragment();

// Supply index input as an argument.
Bundle args = new Bundle();
args.putInt("index", index);
f.setArguments(args);

return f;
}

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

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = null;

//此处添加需要显示的布局文件

return view;

}

}

<?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
android:id="@+id/titles"
android:layout_width="0dip"
android:layout_height="match_parent"
android:layout_weight="1"
class="com.sunplus.app.activity.TitlesFragment" />

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

</LinearLayout>