Java tutorial
/* * Project: Woody * Purpose: Mobile application for trees mapping. * Author: Dmitry Baryshnikov, dmitry.baryshnikov@nextgis.com * ***************************************************************************** * Copyright (c) 2016 NextGIS, info@nextgis.com * * 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.nextgis.woody.fragment; 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.ArrayAdapter; import android.widget.ListView; import com.nextgis.woody.R; import java.util.ArrayList; import java.util.Collection; import java.util.Map; /** * Created by bishop on 11.12.16. */ public class ListViewFragment extends Fragment { private ListView listView; private ArrayList<String> listContent; private Map<String, String> ltData; private int selection; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_list, container, false); listView = (ListView) view.findViewById(R.id.list_view); if (listContent != null) { setAdapter(); } return view; } public void fill(Map<String, String> data, String selection) { listContent = new ArrayList<>(data.values()); ltData = data; this.selection = listContent.indexOf(selection); if (this.selection < 0 || this.selection > listContent.size()) this.selection = 0; setAdapter(); } private void setAdapter() { if (listView != null) { ArrayAdapter<String> adapter; int currentApiVersion = android.os.Build.VERSION.SDK_INT; if (currentApiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB) { adapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_activated_1, listContent); } else { adapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_single_choice, listContent); } listView.setAdapter(adapter); listView.setItemChecked(selection, true); adapter.notifyDataSetChanged(); } } public String getSelection() { int pos = listView.getCheckedItemPosition(); Object[] list = ltData.keySet().toArray(); return (String) list[pos]; } }