FrameLayout和Fragment处理Android应用UI布局实例

  public class MainActivity extends FragmentActivity{
    ..........
  }

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:orientation="horizontal" android:layout_width="match_parent" 
 android:layout_height="match_parent"> 
 <fragment 
  class="com.fragment.main.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" /> 
</LinearLayout> 

public class TitlesFragment extends ListFragment { 
 
 int mCurCheckPosition = 0; 
 int mShownCheckPosition = -1; 
 
 @Override 
 public void onActivityCreated(Bundle savedInstanceState) { 
  super.onActivityCreated(savedInstanceState); 
               
  setListAdapter(new ArrayAdapter<String>(getActivity(), 
    android.R.layout.simple_list_item_activated_1, 
    Shakespeare.TITLES)); //使用静态数组填充列表 
  if (savedInstanceState != null) { 
   mCurCheckPosition = savedInstanceState.getInt("curChoice", 0); 
   mShownCheckPosition = savedInstanceState.getInt("shownChoice", -1); 
  } 
   getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE); 
   showDetails(mCurCheckPosition); 
 } 
 
 @Override 
 public void onSaveInstanceState(Bundle outState) { 
  super.onSaveInstanceState(outState); 
 
  outState.putInt("curChoice", mCurCheckPosition); 
  outState.putInt("shownChoice", mShownCheckPosition); 
 } 
 
 @Override 
 public void onListItemClick(ListView l, View v, int position, long id) { 
  showDetails(position); 
 } 
 
 /** 
  *显示listview item 详情 
  */ 
 void showDetails(int index) { 
  mCurCheckPosition = index; 
   getListView().setItemChecked(index, true); 
 
   if (mShownCheckPosition != mCurCheckPosition) { 
 
    DetailsFragment df = DetailsFragment.newInstance(index); 
    FragmentTransaction ft = getFragmentManager() 
      .beginTransaction(); 
    ft.replace(R.id.details, df); 
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); 
    ft.commit(); 
    mShownCheckPosition = index; 
   }  
 } 
 
} 

DetailsFragment df = DetailsFragment.newInstance(index);//获取详情Fragment的实例
FragmentTransaction ft = getFragmentManager().beginTransaction();//获取FragmentTransaction 实例
ft.replace(R.id.details, df); //使用DetailsFragment 的实例
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();//提交

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; 
 } 
 
 @Override 
 public View onCreateView(LayoutInflater inflater, ViewGroup container, 
   Bundle savedInstanceState) { 
  if (container == null) {    
   return null; 
  } 
  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(Shakespeare.DIALOGUE[getArguments().getInt("index", 0)]); 
  return scroller; 
 } 
}