Java tutorial
/* * DeliciousDroid - http://code.google.com/p/DeliciousDroid/ * * Copyright (C) 2010 Matt Schmidt * * DeliciousDroid is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 3 of the License, * or (at your option) any later version. * * DeliciousDroid is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with DeliciousDroid; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ package com.deliciousdroid.fragment; import android.app.Activity; import android.database.Cursor; import android.support.v4.app.ListFragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.Loader; import android.support.v4.widget.SimpleCursorAdapter; import android.text.TextUtils; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.TextView; import com.deliciousdroid.R; import com.deliciousdroid.platform.BundleManager; import com.deliciousdroid.providers.BundleContent.Bundle; public class BrowseBundlesFragment extends ListFragment implements LoaderManager.LoaderCallbacks<Cursor> { private String sortfield = Bundle.Name + " ASC"; private SimpleCursorAdapter mAdapter; private String username = null; private String query = null; private OnBundleSelectedListener bundleSelectedListener; private OnItemClickListener clickListener; public interface OnBundleSelectedListener { public void onBundleSelected(String bundle); } @Override public void onCreate(android.os.Bundle savedInstanceState) { super.onCreate(savedInstanceState); clickListener = viewListener; } @Override public void onActivityCreated(android.os.Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setHasOptionsMenu(true); mAdapter = new SimpleCursorAdapter(this.getActivity(), R.layout.bundle_view, null, new String[] { Bundle.Name, Bundle.Tags }, new int[] { R.id.bundle_name, R.id.bundle_tags }, 0); setListAdapter(mAdapter); getLoaderManager().initLoader(0, null, this); ListView lv = getListView(); lv.setTextFilterEnabled(true); lv.setFastScrollEnabled(true); lv.setOnItemClickListener(clickListener); lv.setItemsCanFocus(false); lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE); } public void setAccount(String account) { this.username = account; } public void setQuery(String query) { this.query = query; } private OnItemClickListener viewListener = new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String tags = ((TextView) view.findViewById(R.id.bundle_tags)).getText().toString(); tags = TextUtils.join(",", tags.split(" ")); bundleSelectedListener.onBundleSelected(tags); } }; @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.browse_bundle_menu, menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { boolean result = false; switch (item.getItemId()) { case R.id.menu_bundle_sort_name_asc: sortfield = Bundle.Name + " ASC"; result = true; break; case R.id.menu_bundle_sort_name_desc: sortfield = Bundle.Name + " DESC"; result = true; break; } if (result) { getLoaderManager().restartLoader(0, null, this); } else result = super.onOptionsItemSelected(item); return result; } public Loader<Cursor> onCreateLoader(int id, android.os.Bundle args) { if (username != null && !username.equals("")) { if (query != null) { return BundleManager.SearchBundles(query, username, this.getActivity()); } else { return BundleManager.GetBundles(username, sortfield, this.getActivity()); } } else return null; } public void onLoadFinished(Loader<Cursor> loader, Cursor data) { mAdapter.swapCursor(data); } public void onLoaderReset(Loader<Cursor> loader) { mAdapter.swapCursor(null); } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { bundleSelectedListener = (OnBundleSelectedListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnBundleSelectedListener"); } } }