Java tutorial
/* * Copyright (C) 2011 OpenIntents.org * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.openintents.historify.ui.fragments; import org.openintents.historify.R; import org.openintents.historify.data.adapters.TimeLineAdapter; import org.openintents.historify.data.model.Contact; import org.openintents.historify.data.model.Event; import org.openintents.historify.ui.views.ActionBar; import org.openintents.historify.ui.views.TimeLineTopPanel; import org.openintents.historify.uri.Actions; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.AdapterView.OnItemClickListener; /** * * Displays Historify timeline and its additional views. * * @author berke.andras * */ public class TimeLineFragment extends Fragment { // model private Contact mContact; private TimeLineAdapter mAdapter; // views private TimeLineTopPanel mTopPanel; private ListView mLstTimeLine; private View mTxtFiltered; /** Called to have the fragment instantiate its user interface view. */ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { ViewGroup layout = (ViewGroup) inflater.inflate(R.layout.fragment_timeline, container, false); // init list mLstTimeLine = (ListView) layout.findViewById(R.id.timeline_lstTimeLine); mLstTimeLine.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) { onEventClicked((Event) parent.getItemAtPosition(position)); } }); // init list empty view View lstContactsEmptyView = inflater.inflate(R.layout.list_empty_view, null); ((TextView) lstContactsEmptyView).setText(R.string.timeline_no_events); ((ViewGroup) mLstTimeLine.getParent()).addView(lstContactsEmptyView); mLstTimeLine.setEmptyView(lstContactsEmptyView); // init top panel mTopPanel = new TimeLineTopPanel((ViewGroup) layout.findViewById(R.id.timeline_layoutTopPanel)); mTxtFiltered = layout.findViewById(R.id.timeline_txtFiltered); return layout; } public void setContact(Contact contact) { mContact = contact; } public void setActionBar(ActionBar actionBar) { mTopPanel.setActionBar(actionBar); } /** * Called when the fragment's activity has been created and this fragment's * view hierarchy instantiated. */ @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mTopPanel.init(mContact, mLstTimeLine); mAdapter = new TimeLineAdapter(getActivity(), mContact, mTxtFiltered); mLstTimeLine.setAdapter(mAdapter); } @Override public void onResume() { super.onResume(); ((BaseAdapter) mLstTimeLine.getAdapter()).notifyDataSetChanged(); mTopPanel.loadUserIcon(); mTopPanel.loadContactIcon(); } private void onEventClicked(Event event) { if (event.getSource().getEventIntent() != null) { Intent i = new Intent(); i.setAction(event.getSource().getEventIntent()); i.putExtra(Actions.EXTRA_EVENT_ID, event.getId()); i.putExtra(Actions.EXTRA_EVENT_KEY, event.getEventKey()); i.putExtra(Actions.EXTRA_CONTACT_LOOKUP_KEY, mContact.getLookupKey()); if (!event.getSource().isInternal()) i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(i); } } @Override public void onDestroy() { super.onDestroy(); if (mAdapter != null) mAdapter.release(); } }