Java tutorial
/** * This file is part of FileSpace for Android, an app for managing your server (files, talks...). * <p/> * Copyright (c) 2014-2015 FileSpace for Android contributors (http://mercandalli.com) * <p/> * LICENSE: * <p/> * FileSpace for Android 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 2 of the License, or (at your option) any * later version. * <p/> * FileSpace for Android 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. * * @author Jonathan Mercandalli * @license http://www.gnu.org/licenses/gpl.html * @copyright 2014-2015 FileSpace for Android contributors (http://mercandalli.com) */ package com.mercandalli.android.apps.files.user.community; import android.location.Location; import android.os.Bundle; import android.support.annotation.Nullable; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageButton; import android.widget.TextView; import android.widget.Toast; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.MapView; import com.google.android.gms.maps.OnMapReadyCallback; import com.google.android.gms.maps.model.BitmapDescriptorFactory; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.MarkerOptions; import com.mercandalli.android.apps.files.R; import com.mercandalli.android.apps.files.common.fragment.BackFragment; import com.mercandalli.android.apps.files.common.listener.ILocationListener; import com.mercandalli.android.apps.files.common.listener.IPostExecuteListener; import com.mercandalli.android.apps.files.common.net.TaskGet; import com.mercandalli.android.apps.files.common.net.TaskPost; import com.mercandalli.android.apps.files.common.util.GpsUtils; import com.mercandalli.android.apps.files.common.util.StringPair; import com.mercandalli.android.apps.files.main.Config; import com.mercandalli.android.apps.files.main.Constants; import com.mercandalli.android.apps.files.main.network.NetUtils; import com.mercandalli.android.apps.files.user.UserLocationModel; import com.mercandalli.android.apps.files.user.UserModel; import com.mercandalli.android.library.base.dialog.DialogUtils; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.util.ArrayList; import java.util.List; public class UserLocationFragment extends BackFragment { private MapView mapView; private TextView text; private ImageButton circle; private Location location; /** * Google Map */ @Nullable private GoogleMap mGoogleMap; public static UserLocationFragment newInstance() { return new UserLocationFragment(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View rootView = inflater.inflate(R.layout.fragment_admin_add_user_location, container, false); this.text = (TextView) rootView.findViewById(R.id.text); this.text.setText("Touch the circle to see user positions"); this.circle = (ImageButton) rootView.findViewById(R.id.circle); if (mGoogleMap == null) { mapView = (MapView) rootView.findViewById(R.id.mapView); mapView.onCreate(savedInstanceState); mapView.onResume(); //without this, map showed but was empty if (mapView != null) { mapView.getMapAsync(new OnMapReadyCallback() { @Override public void onMapReady(final GoogleMap googleMap) { if (isAdded()) { mGoogleMap = googleMap; } } }); /* map.getUiSettings().setMyLocationButtonEnabled(false); map.setMyLocationEnabled(true); // Needs to call MapsInitializer before doing any CameraUpdateFactory calls MapsInitializer.initialize(this.getActivity()); // Updates the location and zoom of the MapView CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(44.14, 14.2), 10); map.animateCamera(cameraUpdate); */ } addLocation(new UserLocationModel("Zero Zero", 0, 0, 0)); } this.circle.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { DialogUtils.alert(getContext(), "Share your location", "If you share your location you will see all the positions of every users", getString(android.R.string.yes), new DialogUtils.OnDialogUtilsListener() { @Override public void onDialogUtilsCalledBack() { location = GpsUtils.getGpsLocation(getContext(), new ILocationListener() { @Override public void execute(Location location) { if (location != null) { double longitude = location.getLongitude(), latitude = location.getLatitude(); if (NetUtils.isInternetConnection(getContext()) && longitude != 0 && latitude != 0) { List<StringPair> parameters = new ArrayList<>(); parameters.add(new StringPair("longitude", "" + longitude)); parameters.add(new StringPair("latitude", "" + latitude)); (new TaskPost(getActivity(), Constants.URL_DOMAIN + Config.ROUTE_USER_PUT, new IPostExecuteListener() { @Override public void onPostExecute(JSONObject json, String body) { } }, parameters)).execute(); } } } }); if (location != null) { double longitude = location.getLongitude(), latitude = location.getLatitude(); if (NetUtils.isInternetConnection(getContext()) && longitude != 0 && latitude != 0) { List<StringPair> parameters = new ArrayList<>(); parameters.add(new StringPair("longitude", "" + longitude)); parameters.add(new StringPair("latitude", "" + latitude)); (new TaskPost(getActivity(), Constants.URL_DOMAIN + Config.ROUTE_USER_PUT, new IPostExecuteListener() { @Override public void onPostExecute(JSONObject json, String body) { refreshMap(); } }, parameters)).execute(); } } } }, getString(android.R.string.no), null); } }); refreshMap(); return rootView; } public void refreshMap() { if (NetUtils.isInternetConnection(getContext()) && Config.isLogged()) { new TaskGet(getContext(), Constants.URL_DOMAIN + Config.ROUTE_USER, new IPostExecuteListener() { @Override public void onPostExecute(JSONObject json, String body) { List<UserLocationModel> locations = new ArrayList<>(); try { if (json != null) { if (json.has("result")) { JSONArray array = json.getJSONArray("result"); for (int i = 0; i < array.length(); i++) { UserModel userModel = new UserModel(array.getJSONObject(i)); locations.add(userModel.userLocation); } } } else { Toast.makeText(getContext(), R.string.action_failed, Toast.LENGTH_SHORT).show(); } } catch (JSONException e) { Log.e(getClass().getName(), "Failed to convert Json", e); } addLocations(locations); } }, null).execute(); } } public void addLocations(List<UserLocationModel> locations) { int nbLocation = 0; for (UserLocationModel userLocation : locations) { if (addLocation(userLocation)) { nbLocation++; } } text.setText(nbLocation + " user location" + ((nbLocation > 1) ? "s" : "")); } public boolean addLocation(UserLocationModel userLocation) { if (mGoogleMap == null || userLocation == null) { return false; } if (userLocation.latitude == 0 && userLocation.longitude == 0) { return false; } // create marker MarkerOptions marker = new MarkerOptions() .position(new LatLng(userLocation.latitude, userLocation.longitude)).title(userLocation.title); // Changing marker icon marker.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)); // adding marker mGoogleMap.addMarker(marker); return true; } @Override public void onPause() { if (mapView != null) { mapView.onPause(); } super.onPause(); } @Override public void onResume() { if (mapView != null) { mapView.onResume(); } super.onResume(); } @Override public void onDestroy() { super.onDestroy(); if (mapView != null) { mapView.onDestroy(); } } @Override public void onLowMemory() { super.onLowMemory(); if (mapView != null) { mapView.onLowMemory(); } } @Override public boolean back() { return false; } }