Java tutorial
/** * Copyright (C) 2014 Open Whisper Systems * * This program 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. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ package com.securecomcode.text; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.support.v4.app.LoaderManager; import android.support.v4.content.Loader; import android.support.v4.widget.CursorAdapter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import com.actionbarsherlock.app.SherlockListFragment; import com.securecomcode.text.database.loaders.ConversationListLoader; import com.securecomcode.text.recipients.Recipients; import org.whispersystems.textsecure.crypto.MasterSecret; /** * A fragment to select and share to open conversations * * @author Jake McGinty */ public class ShareFragment extends SherlockListFragment implements LoaderManager.LoaderCallbacks<Cursor> { private ConversationSelectedListener listener; private MasterSecret masterSecret; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) { return inflater.inflate(R.layout.share_fragment, container, false); } @Override public void onActivityCreated(Bundle bundle) { super.onActivityCreated(bundle); initializeListAdapter(); getLoaderManager().initLoader(0, null, this); } @Override public void onAttach(Activity activity) { super.onAttach(activity); this.listener = (ConversationSelectedListener) activity; } @Override public void onListItemClick(ListView l, View v, int position, long id) { if (v instanceof ShareListItem) { ShareListItem headerView = (ShareListItem) v; handleCreateConversation(headerView.getThreadId(), headerView.getRecipients(), headerView.getDistributionType()); } } public void setMasterSecret(MasterSecret masterSecret) { if (this.masterSecret != masterSecret) { this.masterSecret = masterSecret; initializeListAdapter(); } } private void initializeListAdapter() { this.setListAdapter(new ShareListAdapter(getActivity(), null, masterSecret)); getListView().setRecyclerListener((ShareListAdapter) getListAdapter()); getLoaderManager().restartLoader(0, null, this); } private void handleCreateConversation(long threadId, Recipients recipients, int distributionType) { listener.onCreateConversation(threadId, recipients, distributionType); } @Override public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) { return new ConversationListLoader(getActivity(), null); } @Override public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) { ((CursorAdapter) getListAdapter()).changeCursor(cursor); } @Override public void onLoaderReset(Loader<Cursor> arg0) { ((CursorAdapter) getListAdapter()).changeCursor(null); } public interface ConversationSelectedListener { public void onCreateConversation(long threadId, Recipients recipients, int distributionType); } }