Java tutorial
/* * Copyright 2013 Nytyr [me at nytyr dot me] * * 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 com.memetro.android.alerts; import android.content.Context; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.support.v4.app.Fragment; import android.util.Log; import android.view.InflateException; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import com.crashlytics.android.Crashlytics; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.LocationSource; import com.google.android.gms.maps.SupportMapFragment; 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.memetro.android.DashboardActivity; import com.memetro.android.R; import com.memetro.android.dataManager.DataUtils; import com.memetro.android.models.Alert; import java.sql.Timestamp; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.GregorianCalendar; import java.util.List; public class MapFragment extends Fragment { private static View inflaterMap; private final static String TAG = "MapFragment"; private GoogleMap map; private LocationManager locationManager; private LatLng latlng = new LatLng(40.415364, -3.707398); private FollowMeLocationSource followMeLocationSource; private DashboardActivity mActivity; @Override public void onCreate(Bundle savedInstance) { super.onCreate(savedInstance); this.mActivity = (DashboardActivity) getActivity(); mActivity.fullActionBar(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (inflaterMap != null) { ViewGroup parent = (ViewGroup) inflaterMap.getParent(); if (parent != null) parent.removeView(inflaterMap); } try { inflaterMap = inflater.inflate(R.layout.fragment_map, container, false); } catch (InflateException e) { // } map = ((SupportMapFragment) getFragmentManager().findFragmentById(R.id.map_fragment)).getMap(); // TODO Esto hay que revisarlo. if (map == null) { Crashlytics.log(1, TAG, "Map is null > " + map + " inflaterMap > " + inflaterMap); return inflaterMap; } locationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE); followMeLocationSource = new FollowMeLocationSource(); map.clear(); map.setLocationSource(followMeLocationSource); map.getUiSettings().setZoomControlsEnabled(true); map.getUiSettings().setZoomGesturesEnabled(true); map.getUiSettings().setCompassEnabled(true); map.setMyLocationEnabled(true); List<Alert> alerts = DataUtils.getAlerts(); MarkerOptions markerOptions = new MarkerOptions(); for (Alert alert : alerts) { latlng = new LatLng(alert.latitude, alert.longitude); markerOptions.icon(BitmapDescriptorFactory.fromResource(getMarkerResource(alert.date, alert.icon))); map.addMarker(markerOptions.position(latlng)); } map.moveCamera(CameraUpdateFactory.newLatLngZoom(latlng, 8)); return inflaterMap; } private int getMarkerResource(String str_date, String iconName) { long time = dateToTime(str_date); long currentTime = System.currentTimeMillis() / 1000; if ((currentTime - time) < 7200) { int iconResource = R.drawable.map_red_metro; if (iconName.equals("transport-icon-cercanias")) { iconResource = R.drawable.map_red_cercanias; } else if (iconName.equals("transport-icon-bus")) { iconResource = R.drawable.map_red_bus; } else if (iconName.equals("transport-icon-colgante")) { iconResource = R.drawable.map_red_colgante; } else if (iconName.equals("transport-icon-media-distancia")) { iconResource = R.drawable.map_red_media_distancia; } return iconResource; } if ((currentTime - time) < 18000) { int iconResource = R.drawable.map_orange_metro; if (iconName.equals("transport-icon-cercanias")) { iconResource = R.drawable.map_orange_cercanias; } else if (iconName.equals("transport-icon-bus")) { iconResource = R.drawable.map_orange_bus; } else if (iconName.equals("transport-icon-colgante")) { iconResource = R.drawable.map_orange_colgante; } else if (iconName.equals("transport-icon-media-distancia")) { iconResource = R.drawable.map_orange_media_distancia; } return iconResource; } int iconResource = R.drawable.map_yellow_metro; if (iconName.equals("transport-icon-cercanias")) { iconResource = R.drawable.map_yellow_cercanias; } else if (iconName.equals("transport-icon-bus")) { iconResource = R.drawable.map_yellow_bus; } else if (iconName.equals("transport-icon-colgante")) { iconResource = R.drawable.map_yellow_colgante; } else if (iconName.equals("transport-icon-media-distancia")) { iconResource = R.drawable.map_yellow_media_distancia; } return iconResource; } // TODO Este codigo esta repetido. Refactorizar. private long dateToTime(String str_date) { try { java.text.DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); java.util.Date date = formatter.parse(str_date); java.sql.Timestamp timeStampDate = new Timestamp(date.getTime()); return timeStampDate.getTime() / 1000; } catch (Exception e) { e.printStackTrace(); return 0; } } @Override public void onResume() { super.onResume(); followMeLocationSource.getBestAvailableProvider(); mActivity.fullActionBar(); mActivity.disableSliderMenu(); } @Override public void onPause() { super.onPause(); mActivity.compressActionBar(); mActivity.activateSliderMenu(); } public void onLocationChanged(Location location) { Log.d(TAG, "onLocationChanged! " + new LatLng(location.getLatitude(), location.getLongitude()).toString()); map.animateCamera( CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()))); } private class FollowMeLocationSource implements LocationSource, LocationListener { private OnLocationChangedListener mListener; private final Criteria criteria = new Criteria(); private String bestAvailableProvider; /* Updates are restricted to one every 10 seconds, and only when * movement of more than 10 meters has been detected.*/ private final int minTime = 20000; // minimum time interval between location updates, in milliseconds private final int minDistance = 5; // minimum distance between location updates, in meters private FollowMeLocationSource() { Log.d(TAG, "FollowMeLocationSource!"); // Get reference to Location Manager // locationManager = (LocationManager) AppContext.context.getSystemService(Context.LOCATION_SERVICE); // Specify Location Provider criteria criteria.setAccuracy(Criteria.ACCURACY_FINE); criteria.setPowerRequirement(Criteria.POWER_HIGH); criteria.setAltitudeRequired(true); criteria.setBearingRequired(true); criteria.setSpeedRequired(true); criteria.setCostAllowed(true); } private void getBestAvailableProvider() { Log.d(TAG, "getBestAvailableProvider!"); /* The preffered way of specifying the location provider (e.g. GPS, NETWORK) to use * is to ask the Location Manager for the one that best satisfies our criteria. * By passing the 'true' boolean we ask for the best available (enabled) provider. */ bestAvailableProvider = locationManager.getBestProvider(criteria, true); } /* Activates this provider. This provider will notify the supplied listener * periodically, until you call deactivate(). * This method is automatically invoked by enabling my-location layer. */ @Override public void activate(LocationSource.OnLocationChangedListener listener) { Log.d(TAG, "activate!"); // We need to keep a reference to my-location layer's listener so we can push forward // location updates to it when we receive them from Location Manager. mListener = listener; // Request location updates from Location Manager if (bestAvailableProvider != null) { locationManager.requestLocationUpdates(bestAvailableProvider, minTime, minDistance, this); if (latlng != null) { map.animateCamera(CameraUpdateFactory.newLatLngZoom(latlng, 12)); } } } /* Deactivates this provider. * This method is automatically invoked by disabling my-location layer. */ @Override public void deactivate() { Log.d(TAG, "deactivate!"); // Remove location updates from Location Manager locationManager.removeUpdates(this); mListener = null; } @Override public void onLocationChanged(Location location) { Log.d(TAG, "onLocationChanged! " + new LatLng(location.getLatitude(), location.getLongitude()).toString()); /* Push location updates to the registered listener.. * (this ensures that my-location layer will set the blue dot at the new/received location) */ if (mListener != null) { mListener.onLocationChanged(location); } /* ..and Animate camera to center on that location ! * (the reason for we created this custom Location Source !) */ map.animateCamera( CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()))); } @Override public void onStatusChanged(String s, int i, Bundle bundle) { Log.d(TAG, "onStatusChanged!"); } @Override public void onProviderEnabled(String s) { Log.d(TAG, "onProviderEnabled!"); map.setLocationSource(followMeLocationSource); } @Override public void onProviderDisabled(String s) { Log.d(TAG, "onProviderDisabled!"); locationManager.removeUpdates(followMeLocationSource); } } }