Java tutorial
/* * Androzic - android navigation client that uses OziExplorer maps (ozf2, ozfx3). * Copyright (C) 2010-2014 Andrey Novikov <http://andreynovikov.info/> * * This file is part of Androzic application. * * Androzic 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. * Androzic 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 Androzic. If not, see <http://www.gnu.org/licenses/>. */ package com.androzic.route; import android.annotation.SuppressLint; import android.app.Activity; import android.app.Dialog; import android.content.DialogInterface; import android.content.res.Resources; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.view.View; import android.widget.RadioButton; import android.widget.TextView; import android.widget.Toast; import com.androzic.R; import com.androzic.data.Route; import com.androzic.data.Waypoint; import com.androzic.navigation.NavigationService; public class RouteStart extends DialogFragment { private OnRouteActionListener routeActionsCallback; private Route route; public RouteStart() { throw new RuntimeException("Unimplemented initialization context"); } //FIXME Fix lint error @SuppressLint("ValidFragment") public RouteStart(Route route) { this.route = route; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setRetainInstance(true); } @SuppressLint("InflateParams") @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(getString(R.string.routestart_name)); final View view = getActivity().getLayoutInflater().inflate(R.layout.act_route_start, null); builder.setView(view); builder.setPositiveButton(R.string.navigate, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { RadioButton forward = (RadioButton) view.findViewById(R.id.forward); int dir = forward.isChecked() ? NavigationService.DIRECTION_FORWARD : NavigationService.DIRECTION_REVERSE; routeActionsCallback.onRouteNavigate(route, dir, -1); dismiss(); } }); updateRouteInfo(view); return builder.create(); } @Override public void onAttach(Activity activity) { super.onAttach(activity); // This makes sure that the container activity has implemented // the callback interface. If not, it throws an exception try { routeActionsCallback = (OnRouteActionListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnRouteActionListener"); } } public void updateRouteInfo(View view) { if (route.length() < 2) { Toast.makeText(getActivity(), R.string.err_shortroute, Toast.LENGTH_LONG).show(); // "Close" fragment getFragmentManager().popBackStack(); return; } TextView name = (TextView) view.findViewById(R.id.name); name.setText(route.name); Waypoint start = route.getWaypoint(0); Waypoint end = route.getWaypoint(route.length() - 1); RadioButton forward = (RadioButton) view.findViewById(R.id.forward); RadioButton reverse = (RadioButton) view.findViewById(R.id.reverse); Resources resources = getResources(); String from = resources.getString(R.string.from_start); String to = resources.getString(R.string.start_to_end); forward.setText(from + " " + start.name + " " + to + " " + end.name); reverse.setText(from + " " + end.name + " " + to + " " + start.name); forward.setChecked(true); } @Override public void onDestroyView() { if (getDialog() != null && getRetainInstance()) getDialog().setDismissMessage(null); super.onDestroyView(); } }