1package eu.siacs.conversations.ui;
2
3import android.Manifest;
4import android.annotation.TargetApi;
5import android.content.Context;
6import android.content.SharedPreferences;
7import android.content.pm.PackageManager;
8import android.graphics.Bitmap;
9import android.graphics.BitmapFactory;
10import android.location.Location;
11import android.location.LocationListener;
12import android.location.LocationManager;
13import android.os.Build;
14import android.os.Bundle;
15import android.preference.PreferenceManager;
16import android.provider.Settings;
17import android.support.annotation.NonNull;
18import android.text.TextUtils;
19import android.util.Log;
20import android.view.MenuItem;
21
22import org.osmdroid.api.IGeoPoint;
23import org.osmdroid.api.IMapController;
24import org.osmdroid.config.Configuration;
25import org.osmdroid.config.IConfigurationProvider;
26import org.osmdroid.tileprovider.tilesource.XYTileSource;
27import org.osmdroid.util.GeoPoint;
28import org.osmdroid.views.MapView;
29import org.osmdroid.views.overlay.Overlay;
30
31import java.io.File;
32
33import eu.siacs.conversations.BuildConfig;
34import eu.siacs.conversations.Config;
35import eu.siacs.conversations.R;
36import eu.siacs.conversations.ui.util.LocationHelper;
37import eu.siacs.conversations.ui.widget.Marker;
38import eu.siacs.conversations.ui.widget.MyLocation;
39import eu.siacs.conversations.utils.ThemeHelper;
40
41public abstract class LocationActivity extends ActionBarActivity implements LocationListener {
42 protected LocationManager locationManager;
43 protected boolean hasLocationFeature;
44
45 public static final int REQUEST_CODE_CREATE = 0;
46 public static final int REQUEST_CODE_FAB_PRESSED = 1;
47 public static final int REQUEST_CODE_SNACKBAR_PRESSED = 2;
48
49 protected static final String KEY_LOCATION = "loc";
50 protected static final String KEY_ZOOM_LEVEL = "zoom";
51
52 protected Location myLoc = null;
53 private MapView map = null;
54 protected IMapController mapController = null;
55
56 protected Bitmap marker_icon;
57
58 protected void clearMarkers() {
59 synchronized (this.map.getOverlays()) {
60 for (final Overlay overlay : this.map.getOverlays()) {
61 if (overlay instanceof Marker || overlay instanceof MyLocation) {
62 this.map.getOverlays().remove(overlay);
63 }
64 }
65 }
66 }
67
68 protected void updateLocationMarkers() {
69 clearMarkers();
70 }
71
72 protected XYTileSource tileSource() {
73 return new XYTileSource("OpenStreetMap",
74 0, 19, 256, ".png", new String[] {
75 "https://a.tile.openstreetmap.org/",
76 "https://b.tile.openstreetmap.org/",
77 "https://c.tile.openstreetmap.org/" },"© OpenStreetMap contributors");
78 }
79
80 @Override
81 protected void onCreate(final Bundle savedInstanceState) {
82 super.onCreate(savedInstanceState);
83 final Context ctx = getApplicationContext();
84 setTheme(ThemeHelper.find(this));
85
86 final PackageManager packageManager = ctx.getPackageManager();
87 hasLocationFeature = packageManager.hasSystemFeature(PackageManager.FEATURE_LOCATION) ||
88 packageManager.hasSystemFeature(PackageManager.FEATURE_LOCATION_GPS) ||
89 packageManager.hasSystemFeature(PackageManager.FEATURE_LOCATION_NETWORK);
90 this.locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
91 this.marker_icon = BitmapFactory.decodeResource(ctx.getResources(), R.drawable.marker);
92
93 // Ask for location permissions if location services are enabled and we're
94 // just starting the activity (we don't want to keep pestering them on every
95 // screen rotation or if there's no point because it's disabled anyways).
96 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && savedInstanceState == null) {
97 requestPermissions(REQUEST_CODE_CREATE);
98 }
99
100 final IConfigurationProvider config = Configuration.getInstance();
101 config.load(ctx, getPreferences());
102 config.setUserAgentValue(BuildConfig.APPLICATION_ID + "_" + BuildConfig.VERSION_CODE);
103
104 final File f = new File(ctx.getCacheDir() + "/tiles");
105 try {
106 //noinspection ResultOfMethodCallIgnored
107 f.mkdirs();
108 } catch (final SecurityException ignored) {
109 }
110 if (f.exists() && f.isDirectory() && f.canRead() && f.canWrite()) {
111 Log.d(Config.LOGTAG, "Using tile cache at: " + f.getAbsolutePath());
112 config.setOsmdroidTileCache(f.getAbsoluteFile());
113 }
114 }
115
116 @Override
117 protected void onSaveInstanceState(@NonNull final Bundle outState) {
118 super.onSaveInstanceState(outState);
119
120 final IGeoPoint center = map.getMapCenter();
121 outState.putParcelable(KEY_LOCATION, new GeoPoint(
122 center.getLatitude(),
123 center.getLongitude()
124 ));
125 outState.putDouble(KEY_ZOOM_LEVEL, map.getZoomLevelDouble());
126 }
127
128 @Override
129 protected void onRestoreInstanceState(@NonNull final Bundle savedInstanceState) {
130 super.onRestoreInstanceState(savedInstanceState);
131
132 if (savedInstanceState.containsKey(KEY_LOCATION)) {
133 mapController.setCenter(savedInstanceState.getParcelable(KEY_LOCATION));
134 }
135 if (savedInstanceState.containsKey(KEY_ZOOM_LEVEL)) {
136 mapController.setZoom(savedInstanceState.getDouble(KEY_ZOOM_LEVEL));
137 }
138 }
139
140 protected void setupMapView(MapView mapView, final GeoPoint pos) {
141 map = mapView;
142 map.setTileSource(tileSource());
143 map.setBuiltInZoomControls(false);
144 map.setMultiTouchControls(true);
145 map.setTilesScaledToDpi(true);
146 mapController = map.getController();
147 mapController.setZoom(Config.Map.INITIAL_ZOOM_LEVEL);
148 mapController.setCenter(pos);
149 }
150
151 protected void gotoLoc() {
152 gotoLoc(map.getZoomLevelDouble() == Config.Map.INITIAL_ZOOM_LEVEL);
153 }
154
155 protected abstract void gotoLoc(final boolean setZoomLevel);
156
157 protected abstract void setMyLoc(final Location location);
158
159 protected void requestLocationUpdates() {
160 if (!hasLocationFeature || locationManager == null) {
161 return;
162 }
163
164 Log.d(Config.LOGTAG, "Requesting location updates...");
165 final Location lastKnownLocationGps;
166 final Location lastKnownLocationNetwork;
167
168 try {
169 if (locationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER)) {
170 lastKnownLocationGps = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
171
172 if (lastKnownLocationGps != null) {
173 setMyLoc(lastKnownLocationGps);
174 }
175 locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, Config.Map.LOCATION_FIX_TIME_DELTA,
176 Config.Map.LOCATION_FIX_SPACE_DELTA, this);
177 } else {
178 lastKnownLocationGps = null;
179 }
180
181 if (locationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER)) {
182 lastKnownLocationNetwork = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
183 if (lastKnownLocationNetwork != null && LocationHelper.isBetterLocation(lastKnownLocationNetwork,
184 lastKnownLocationGps)) {
185 setMyLoc(lastKnownLocationNetwork);
186 }
187 locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, Config.Map.LOCATION_FIX_TIME_DELTA,
188 Config.Map.LOCATION_FIX_SPACE_DELTA, this);
189 }
190
191 // If something else is also querying for location more frequently than we are, the battery is already being
192 // drained. Go ahead and use the existing locations as often as we can get them.
193 if (locationManager.getAllProviders().contains(LocationManager.PASSIVE_PROVIDER)) {
194 locationManager.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, this);
195 }
196 } catch (final SecurityException ignored) {
197 // Do nothing if the users device has no location providers.
198 }
199 }
200
201 protected void pauseLocationUpdates() throws SecurityException {
202 if (locationManager != null) {
203 locationManager.removeUpdates(this);
204 }
205 }
206
207 @Override
208 public boolean onOptionsItemSelected(final MenuItem item) {
209 switch (item.getItemId()) {
210 case android.R.id.home:
211 finish();
212 return true;
213 }
214 return super.onOptionsItemSelected(item);
215 }
216
217 @Override
218 protected void onPause() {
219 super.onPause();
220 Configuration.getInstance().save(this, getPreferences());
221 map.onPause();
222 try {
223 pauseLocationUpdates();
224 } catch (final SecurityException ignored) {
225 }
226 }
227
228 protected abstract void updateUi();
229
230 protected boolean mapAtInitialLoc() {
231 return map.getZoomLevelDouble() == Config.Map.INITIAL_ZOOM_LEVEL;
232 }
233
234 @Override
235 protected void onResume() {
236 super.onResume();
237 Configuration.getInstance().load(this, getPreferences());
238 map.onResume();
239 this.setMyLoc(null);
240 requestLocationUpdates();
241 updateLocationMarkers();
242 updateUi();
243 map.setTileSource(tileSource());
244 map.setTilesScaledToDpi(true);
245
246 if (mapAtInitialLoc()) {
247 gotoLoc();
248 }
249 }
250
251 @TargetApi(Build.VERSION_CODES.M)
252 protected boolean hasLocationPermissions() {
253 return (checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED ||
254 checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED);
255 }
256
257 @TargetApi(Build.VERSION_CODES.M)
258 protected void requestPermissions(final int request_code) {
259 if (!hasLocationPermissions()) {
260 requestPermissions(
261 new String[]{
262 Manifest.permission.ACCESS_FINE_LOCATION,
263 Manifest.permission.ACCESS_COARSE_LOCATION,
264 },
265 request_code
266 );
267 }
268 }
269
270 @Override
271 public void onRequestPermissionsResult(final int requestCode,
272 @NonNull final String[] permissions,
273 @NonNull final int[] grantResults) {
274 super.onRequestPermissionsResult(requestCode, permissions, grantResults);
275 for (int i = 0; i < grantResults.length; i++) {
276 if (Manifest.permission.ACCESS_FINE_LOCATION.equals(permissions[i]) ||
277 Manifest.permission.ACCESS_COARSE_LOCATION.equals(permissions[i])) {
278 if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
279 requestLocationUpdates();
280 }
281 }
282 }
283 }
284
285 protected SharedPreferences getPreferences() {
286 return PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
287 }
288
289 protected boolean isLocationEnabled() {
290 try {
291 final int locationMode = Settings.Secure.getInt(getContentResolver(), Settings.Secure.LOCATION_MODE);
292 return locationMode != Settings.Secure.LOCATION_MODE_OFF;
293 } catch( final Settings.SettingNotFoundException e ){
294 return false;
295 }
296 }
297}