我已经实现了一个Activity托管两个片段的。我在左边有一个片段，在右边有一个。左侧的片段是要单击的项目列表。当您单击它时，它会在右侧膨胀一个新片段。
左侧列表中的一项应该扩充右侧的不同列表。我让它运行良好，除非当您单击该项目时，它会使列表膨胀以覆盖整个屏幕。我只希望它覆盖屏幕右侧的空间。
有没有办法让片段不覆盖整个屏幕？所有其他人都留在屏幕的右侧，只是这个没有。但这是唯一一个试图ListView在右侧充气的。
以下ListFragemnt是应该在右侧充气的相关方法：
public void onActivityCreated(Bundle inState) {
super.onActivityCreated(inState);
//setContentView(R.layout.results_list_activity);
//mIntent = getIntent();
mActivity = getActivity();
mArrayListRecipe = generateList();
ListView listView = (ListView) mActivity.findViewById(android.R.id.list);
ArrayAdapter<Recipe> adapter = new ArrayAdapter<Recipe>(mActivity,
android.R.layout.simple_list_item_1, mArrayListRecipe);
listView.setAdapter(adapter);
//listView.setOnItemClickListener((OnItemClickListener) this);
}
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
LinearLayout layout = (LinearLayout) inflater.inflate(R.layout.results_list_activity, container, false);
return layout;
}
这里是扩展名为 results_list_activity.xml 的 XML 布局：
<?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" >
<ListView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/list"
android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1"/>
这是包含我希望ListView放置在main_activity.xml中的框架的布局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:id="@+id/main_layout_land"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:orientation="horizontal" android:layout_alignParentBottom="true">
<!-- Left side fragment -->
<fragment class="com.jasoncrosby.app.recipeorganizer.MainFragment" android:id="@+id/left_fragment"
android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1"/>
<!-- Right side fragment -->
<FrameLayout android:id="@+id/right_fragment" android:layout_width="0dp" android:layout_height="match_parent"
android:layout_weight="1"/>
</LinearLayout>
编辑：
加载片段的活动很简单，只包含对以下内容的调用：
setContentView(R.layout.main_activity);
这是MainFragment.java：
public class MainFragment extends ListFragment {
//*******
// Fields
//*******
/** Indicated weather there is enough room on the screen to use 2 panes. */
private boolean mDualPane;
/** Indicates which item in the main list was clicked. */
private int mCurCheckPosition = 0;
/** The name of the save button. */
private String mStringSaveItemName;
/** The name of the search button. */
private String mStringSearchItemName;
/** The name of the browse button. */
private String mStringBrowseItemName;
/** The name of the random button. */
private String mStringRandomItemName;
/** The {@code Activity} associated with this {@code Fragment}. */
private Activity mActivity;
//*************
// Constructors
//*************
/**
* This constructor is only provided to avoid a compiler warning. It should not be used to crate a new
* {@code MainFragment} object.
*/
public MainFragment(){}
/**
* Used to create a new {@code MainFragment} object with the id.
*
* @param id
*/
//public MainFragment(int id) {
//mIntFragmentId = id;
//mContext = context;
//}
//*******************
// Overridden methods
//*******************
@Override
public void onActivityCreated(Bundle savedState) {
super.onActivityCreated(savedState);
mActivity = getActivity();
mStringSaveItemName = mActivity.getString(R.string.save_button);
mStringSearchItemName = mActivity.getString(R.string.search_button);
mStringBrowseItemName = mActivity.getString(R.string.browse_button);
mStringRandomItemName = mActivity.getString(R.string.random_button);
// Populate list with our static array of titles.
setListAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1,
new String[] {mStringSaveItemName, mStringSearchItemName, mStringBrowseItemName,
mStringRandomItemName}));
// Check to see if we have a frame in which to embed the details
// fragment directly in the containing UI.
View detailsFrame = mActivity.findViewById(R.id.right_fragment);
mDualPane = detailsFrame != null && detailsFrame.getVisibility() == View.VISIBLE;
if (mDualPane) {
// In dual-pane mode, list view highlights selected item.
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
// Make sure our UI is in the correct state.
showDetails(mCurCheckPosition);
}
}
@Override
public void onListItemClick(ListView l, View v, int pos, long id) {
showDetails(pos);
}
//****************
// Private methods
//****************
private void showDetails(int index) {
mCurCheckPosition = index;
if (mDualPane) {
switch (mCurCheckPosition) {
case 0 : inflateFirstUi(); break;
case 1 : inflateSecondUi(); break;
case 2 : inflateThirdUi(); break;
case 3 : inflateFourthUi(); break;
default : inflateFirstUi(); break;
}
} else {
// Otherwise we need to launch a new activity to display
// the dialog fragment with selected text.
Intent intent = new Intent();
//intent.setClass(getActivity(), DetailsActivity.class);
intent.putExtra("index", index);
startActivity(intent);
}
}
private void inflateFirstUi() {
SaveFragment details = new SaveFragment();
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.right_fragment, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
private void inflateSecondUi() {
SearchFragment details = new SearchFragment();
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.right_fragment, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
private void inflateThirdUi() {
ResultsListFragment details = new ResultsListFragment(Constants.BROWSE_REQUEST);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.right_fragment, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
private void inflateFourthUi() {
ResultsListFragment details = new ResultsListFragment(Constants.RANDOM_REQUEST);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.right_fragment, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
}
问题出showDetails()在 switch 语句中的方法上。案例 0 和案例 1 工作得很好，可以加载到我在屏幕右侧的窗格中。案例 3 是我遇到这个问题的地方。它会加载 UI，但会覆盖整个屏幕，而不是局限于窗格的右侧。