使用碎片进行安卓搜索

简而言之，你不能。在 中无法创建搜索界面有几个原因。Fragment

1. 创建可搜索界面时，您必须在 Android 清单中指定默认的“可搜索活动”。我相信你知道，没有父母就不可能存在，因此，这种分离是不可能的。FragmentActivity

2. 如果你已经弄清楚了#1，我假设你问了这个问题，希望有一些神奇的“黑客”可以完成工作。但是，该文件指出，

   当用户在搜索对话框或小组件中执行搜索时，系统将启动可搜索活动，并使用ACTION_SEARCH操作在 Intent 中向其提供搜索查询。您的可搜索活动会从意向的 QUERY extra 中检索查询，然后搜索您的数据并显示结果。

   负责提供搜索结果的底层内部系统期望一个 ， 而不是 一个 ;因此，实现完全独立于 的搜索接口是不可能的，因为它需要对基础系统本身进行更改。请查看 SearchableInfo 类的源代码，如果您不相信我:)。ActivityFragmentActivity

话虽如此，实现与您描述的类似的东西似乎并不太困难。例如，您可以考虑实现可搜索活动，以便它接受意图，并且（例如，而不是立即在 中显示结果）将搜索查询传递给您的 s。例如，请考虑以下可搜索活动：android.intent.action.SEARCHListViewFragment

public class SearchableActivity extends Activity {

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

        if (Intent.ACTION_SEARCH.equals(getIntent().getAction())) {
          String query = intent.getStringExtra(SearchManager.QUERY);
          doMySearch(query);
        }
    }

    /**
     * Performs a search and passes the results to the container
     * Activity that holds your Fragments.
     */
    public void doMySearch(String query) {
        // TODO: implement this
    }
}

发出搜索请求时，系统将启动可搜索活动，执行查询，并将结果传递给某个容器活动（基于 您的实现）。然后，容器 Activity 会将这些结果传递给包含的可搜索 ，其中将显示结果。实现需要比你所希望的更多的工作，但我相信有一些方法可以使它更加模块化，而且看起来这可能是你能做的最好的事情。doMySearchFragment

p.s. 如果您使用此方法，则可能必须特别注意在回堆栈中添加/删除哪些活动。请参阅此帖子，了解有关如何执行此操作的更多信息。

附言您可能还会完全忘记标准搜索界面，而只是在a中实现简单的搜索，如下面的Raghav帖子中所述。Fragment

下面是使用片段搜索内容的示例。希望它有帮助，这就是你正在寻找的：

public class LoaderCursor extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        FragmentManager fm = getFragmentManager();

        // Create the list fragment and add it as our sole content.
        if (fm.findFragmentById(android.R.id.content) == null) {
            CursorLoaderListFragment list = new CursorLoaderListFragment();
            fm.beginTransaction().add(android.R.id.content, list).commit();
        }
    }

    public static class CursorLoaderListFragment extends ListFragment
            implements OnQueryTextListener, LoaderManager.LoaderCallbacks<Cursor> {

        // This is the Adapter being used to display the list's data.
        SimpleCursorAdapter mAdapter;

        // If non-null, this is the current filter the user has provided.
        String mCurFilter;

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

            // Give some text to display if there is no data.  In a real
            // application this would come from a resource.
            setEmptyText("No phone numbers");

            // We have a menu item to show in action bar.
            setHasOptionsMenu(true);

            // Create an empty adapter we will use to display the loaded data.
            mAdapter = new SimpleCursorAdapter(getActivity(),
                    android.R.layout.simple_list_item_2, null,
                    new String[] { Contacts.DISPLAY_NAME, Contacts.CONTACT_STATUS },
                    new int[] { android.R.id.text1, android.R.id.text2 }, 0);
            setListAdapter(mAdapter);

            // Start out with a progress indicator.
            setListShown(false);

            // Prepare the loader.  Either re-connect with an existing one,
            // or start a new one.
            getLoaderManager().initLoader(0, null, this);
        }

        @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
            // Place an action bar item for searching.
            MenuItem item = menu.add("Search");
            item.setIcon(android.R.drawable.ic_menu_search);
            item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
            SearchView sv = new SearchView(getActivity());
            sv.setOnQueryTextListener(this);
            item.setActionView(sv);
        }

        public boolean onQueryTextChange(String newText) {
            // Called when the action bar search text has changed.  Update
            // the search filter, and restart the loader to do a new query
            // with this filter.
            mCurFilter = !TextUtils.isEmpty(newText) ? newText : null;
            getLoaderManager().restartLoader(0, null, this);
            return true;
        }

        @Override public boolean onQueryTextSubmit(String query) {
            // Don't care about this.
            return true;
        }

        @Override public void onListItemClick(ListView l, View v, int position, long id) {
            // Insert desired behavior here.
            Log.i("FragmentComplexList", "Item clicked: " + id);
        }

        // These are the Contacts rows that we will retrieve.
        static final String[] CONTACTS_SUMMARY_PROJECTION = new String[] {
            Contacts._ID,
            Contacts.DISPLAY_NAME,
            Contacts.CONTACT_STATUS,
            Contacts.CONTACT_PRESENCE,
            Contacts.PHOTO_ID,
            Contacts.LOOKUP_KEY,
        };

        public Loader<Cursor> onCreateLoader(int id, Bundle args) {
            // This is called when a new Loader needs to be created.  This
            // sample only has one Loader, so we don't care about the ID.
            // First, pick the base URI to use depending on whether we are
            // currently filtering.
            Uri baseUri;
            if (mCurFilter != null) {
                baseUri = Uri.withAppendedPath(Contacts.CONTENT_FILTER_URI,
                        Uri.encode(mCurFilter));
            } else {
                baseUri = Contacts.CONTENT_URI;
            }

            // Now create and return a CursorLoader that will take care of
            // creating a Cursor for the data being displayed.
            String select = "((" + Contacts.DISPLAY_NAME + " NOTNULL) AND ("
                    + Contacts.HAS_PHONE_NUMBER + "=1) AND ("
                    + Contacts.DISPLAY_NAME + " != '' ))";
            return new CursorLoader(getActivity(), baseUri,
                    CONTACTS_SUMMARY_PROJECTION, select, null,
                    Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC");
        }

        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
            // Swap the new cursor in.  (The framework will take care of closing the
            // old cursor once we return.)
            mAdapter.swapCursor(data);

            // The list should now be shown.
            if (isResumed()) {
                setListShown(true);
            } else {
                setListShownNoAnimation(true);
            }
        }

        public void onLoaderReset(Loader<Cursor> loader) {
            // This is called when the last Cursor provided to onLoadFinished()
            // above is about to be closed.  We need to make sure we are no
            // longer using it.
            mAdapter.swapCursor(null);
        }
    }
}