Java tutorial
/* * Copyright (c) 2016 yvolk (Yuri Volkov), http://yurivolkov.com * * 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.andstatus.app.timeline; import android.content.Intent; import android.os.Bundle; import android.provider.BaseColumns; import android.support.v4.app.FragmentActivity; import android.view.View; import android.widget.AdapterView; import android.widget.TextView; import org.andstatus.app.ActivityRequestCode; import org.andstatus.app.IntentExtra; import org.andstatus.app.R; import org.andstatus.app.SelectorDialog; import org.andstatus.app.account.MyAccount; import org.andstatus.app.util.TriState; import org.andstatus.app.widget.MySimpleAdapter; import java.util.ArrayList; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @author yvolk@yurivolkov.com */ public class TimelineSelector extends SelectorDialog { private static final String KEY_VISIBLE_NAME = "visible_name"; private static final String KEY_SYNC_AUTO = "sync_auto"; public static void selectTimeline(FragmentActivity activity, ActivityRequestCode requestCode, Timeline timeline, MyAccount currentMyAccount) { SelectorDialog selector = new TimelineSelector(); selector.setRequestCode(requestCode); selector.getArguments().putLong(IntentExtra.TIMELINE_ID.key, timeline.getId()); selector.getArguments().putString(IntentExtra.ACCOUNT_NAME.key, currentMyAccount.getAccountName()); selector.show(activity); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setTitle(R.string.dialog_title_select_timeline); Timeline timeline = myContext.persistentTimelines() .fromId(getArguments().getLong(IntentExtra.TIMELINE_ID.key, 0)); MyAccount currentMyAccount = myContext.persistentAccounts() .fromAccountName(getArguments().getString(IntentExtra.ACCOUNT_NAME.key)); List<Timeline> timelines = myContext.persistentTimelines().getFiltered(true, TriState.fromBoolean(timeline.isCombined()), currentMyAccount, timeline.getOrigin()); if (timelines.isEmpty()) { returnSelectedTimeline(Timeline.getEmpty(null)); return; } else if (timelines.size() == 1) { returnSelectedTimeline(timelines.get(0)); return; } final List<TimelineListViewItem> items = new ArrayList<>(); for (Timeline timeline2 : timelines) { TimelineListViewItem viewItem = new TimelineListViewItem(myContext, timeline2); items.add(viewItem); } Collections.sort(items, new TimelineListViewItemComparator(R.id.displayedInSelector, true, false)); removeDuplicates(items); setListAdapter(newListAdapter(items)); getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { long timelineId = Long.parseLong(((TextView) view.findViewById(R.id.id)).getText().toString()); returnSelectedTimeline(myContext.persistentTimelines().fromId(timelineId)); } }); } private void removeDuplicates(List<TimelineListViewItem> timelines) { Map<String, TimelineListViewItem> unique = new HashMap<>(); boolean removeSomething = false; for (TimelineListViewItem viewItem : timelines) { String key = viewItem.timelineTitle.toString(); if (unique.containsKey(key)) { removeSomething = true; } else { unique.put(key, viewItem); } } if (removeSomething) { timelines.retainAll(unique.values()); } } private MySimpleAdapter newListAdapter(List<TimelineListViewItem> listData) { List<Map<String, String>> list = new ArrayList<>(); final String syncText = getText(R.string.synced_abbreviated).toString(); for (TimelineListViewItem viewItem : listData) { Map<String, String> map = new HashMap<>(); map.put(KEY_VISIBLE_NAME, viewItem.timelineTitle.toString()); map.put(KEY_SYNC_AUTO, viewItem.timeline.isSyncedAutomatically() ? syncText : ""); map.put(BaseColumns._ID, Long.toString(viewItem.timeline.getId())); list.add(map); } return new MySimpleAdapter(getActivity(), list, R.layout.accountlist_item, new String[] { KEY_VISIBLE_NAME, KEY_SYNC_AUTO, BaseColumns._ID }, new int[] { R.id.visible_name, R.id.sync_auto, R.id.id }, true); } private void returnSelectedTimeline(Timeline timeline) { returnSelected(new Intent().putExtra(IntentExtra.TIMELINE_ID.key, timeline.getId())); } }