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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 package org.chromium.components.location; |
| 6 |
| 7 import android.Manifest; |
| 8 import android.content.Context; |
| 9 import android.content.Intent; |
| 10 import android.content.pm.PackageManager; |
| 11 import android.os.Process; |
| 12 import android.provider.Settings; |
| 13 |
| 14 import org.chromium.base.ThreadUtils; |
| 15 import org.chromium.base.VisibleForTesting; |
| 16 import org.chromium.base.annotations.SuppressFBWarnings; |
| 17 |
| 18 /** |
| 19 * Provides methods for querying Chrome's ability to use Android's location serv
ices. |
| 20 * |
| 21 * This class should be used only on the UI thread. |
| 22 */ |
| 23 public class LocationUtils { |
| 24 private static LocationUtils sInstance; |
| 25 |
| 26 protected LocationUtils() {} |
| 27 |
| 28 /** |
| 29 * Returns the singleton instance of LocationSettings, creating it if needed
. |
| 30 */ |
| 31 @SuppressFBWarnings("LI_LAZY_INIT_STATIC") |
| 32 public static LocationUtils getInstance() { |
| 33 ThreadUtils.assertOnUiThread(); |
| 34 if (sInstance == null) { |
| 35 sInstance = new LocationUtils(); |
| 36 } |
| 37 return sInstance; |
| 38 } |
| 39 |
| 40 private boolean hasPermission(Context context, String name) { |
| 41 return context.checkPermission(name, Process.myPid(), Process.myUid()) |
| 42 == PackageManager.PERMISSION_GRANTED; |
| 43 } |
| 44 |
| 45 /** |
| 46 * Returns true if Chromium has permission to access location. |
| 47 * |
| 48 * Check both chromeHasLocationPermission() and isSystemLocationSettingEnabl
ed() to determine if |
| 49 * Chromium's location requests will return results. |
| 50 */ |
| 51 public boolean chromiumHasLocationPermission(Context context) { |
| 52 return hasPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION
) |
| 53 || hasPermission(context, Manifest.permission.ACCESS_FINE_LOCATI
ON); |
| 54 } |
| 55 |
| 56 /** |
| 57 * Returns whether location services are enabled system-wide, i.e. whether a
ny application is |
| 58 * able to access location. |
| 59 */ |
| 60 public boolean isSystemLocationSettingEnabled(Context context) { |
| 61 return Settings.Secure.getInt(context.getContentResolver(), Settings.Sec
ure.LOCATION_MODE, |
| 62 Settings.Secure.LOCATION_MODE_OFF) |
| 63 != Settings.Secure.LOCATION_MODE_OFF; |
| 64 } |
| 65 |
| 66 /** |
| 67 * Returns an intent to launch Android Location Settings. |
| 68 */ |
| 69 public Intent getSystemLocationSettingsIntent() { |
| 70 Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); |
| 71 i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| 72 return i; |
| 73 } |
| 74 |
| 75 @VisibleForTesting |
| 76 public static void setInstanceForTesting(LocationUtils instance) { |
| 77 sInstance = instance; |
| 78 } |
| 79 } |
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