在安卓10中跳转GPS位置

huangapple
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英文:

Jumping gps location in android 10

问题

  1. public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
  3.     private static final String TAG = LocationFinder.class.getSimpleName();
  4.     private Location location;
  5.     private GoogleApiClient googleApiClient;
  6.     private LocationRequest locationRequest;
  7.     private static final long UPDATE_INTERVAL = 1000, FASTEST_INTERVAL = 1000;
  8.     private Context context;
  9.     static final public String GDS_RESULT = "AE_Find_Location";
  10.     static final public String GDS_SPEED = "Service_SPD";
  11.     static final public String GDS_LAT = "Service_lat";
  12.     static final public String GDS_LON = "Service_lon";
  13.     static final public String GDS_BEARING = "Service_bearing";
  14.     private LocalBroadcastManager broadcaster;
  15.     private int SEND_LOCATION_TIMER = 30000;
  16.     public static final int REQUEST_CHECK_SETTINGS = 100;
  18.     @Override
  19.     public void onCreate() {
  20.         super.onCreate();
  21.         context = getApplicationContext();
  22.         googleApiClient = new GoogleApiClient.Builder(this)
  23.                 .addApi(LocationServices.API)
  24.                 .addConnectionCallbacks(this)
  25.                 .addOnConnectionFailedListener(this).build();
  26.         broadcaster = LocalBroadcastManager.getInstance(this);
  27.     }
  29.     @Override
  30.     public int onStartCommand(Intent intent, int flags, int startId) {
  31.         if (googleApiClient != null)
  32.             googleApiClient.connect();
  33.         startSendData();
  34.         return START_STICKY;
  35.     }
  37.     private ArrayList<Location> locations = new ArrayList<>();
  38.     private ConcurrentLinkedQueue<Coordinate> queue = new ConcurrentLinkedQueue<>();
  39.     private Timer timer;
  40.     private TimerTask timerTask = new TimerTask() {
  41.         @Override
  42.         public void run() {
  43.             new Thread(new Runnable() {
  44.                 @Override
  45.                 public void run() {
  46.                     if (location == null) return;
  47.                     sendResult(location);
  48.                 }
  49.             }).start();
  50.         }
  51.     };
  53.     public void startSendData() {
  54.         if (timer != null) {
  55.             return;
  56.         }
  57.         timer = new Timer();
  58.         timer.scheduleAtFixedRate(timerTask, 0, 1000);
  59.     }
  61.     public void stopSendData() {
  62.         if (timer == null) return;
  63.         timer.cancel();
  64.         timer = null;
  65.     }
  67.     @Nullable
  68.     @Override
  69.     public IBinder onBind(Intent intent) {
  70.         return null;
  71.     }
  73.     @Override
  74.     public void onConnected(Bundle bundle) {
  75.         if (ActivityCompat.checkSelfPermission(this,
  76.                 Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
  77.                 && ActivityCompat.checkSelfPermission(this,
  78.                 Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
  79.             return;
  80.         }
  82.         LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
  83.                 .addLocationRequest(locationRequest);
  84.         builder.setAlwaysShow(true);
  86.         PendingResult<LocationSettingsResult> result =
  87.                 LocationServices.SettingsApi.checkLocationSettings(
  88.                         googleApiClient,
  89.                         builder.build()
  90.                 );
  92.         result.setResultCallback(new ResultCallback<LocationSettingsResult>() {
  93.             @Override
  94.             public void onResult(LocationSettingsResult locationSettingsResult) {
  95.                 final Status status = locationSettingsResult.getStatus();
  97.                 switch (status.getStatusCode()) {
  98.                     case LocationSettingsStatusCodes.SUCCESS:
  99.                         // NO need to show the dialog;
  100.                         break;
  101.                     case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
  102.                         try {
  103.                             status.startResolutionForResult(MyApplication.currentActivity, REQUEST_CHECK_SETTINGS);
  104.                         } catch (IntentSender.SendIntentException e) {
  105.                             //failed to show dialog
  106.                         }
  107.                         break;
  108.                     case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
  109.                         // Location settings are unavailable so not possible to show any dialog now
  110.                         break;
  111.                 }
  112.             }
  113.         });
  115.         location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
  116.         startLocationUpdates();
  117.     }
  119.     private void startLocationUpdates() {
  120.         locationRequest = new LocationRequest();
  121.         locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
  122.         locationRequest.setInterval(UPDATE_INTERVAL);
  123.         locationRequest.setFastestInterval(FASTEST_INTERVAL);
  125.         if (ActivityCompat.checkSelfPermission(this,
  126.                 Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
  127.                 && ActivityCompat.checkSelfPermission(this,
  128.                 Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
  129.         }
  131.         LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
  132.     }
  134.     @Override
  135.     public void onConnectionSuspended(int i) {
  136.     }
  138.     @Override
  139.     public void onConnectionFailed(ConnectionResult connectionResult) {
  140.     }
  142.     @Override
  143.     public void onLocationChanged(Location location) {
  144.         if (location != null) {
  145.             this.location = location;
  146.         }
  147.     }
  149.     @Override
  150.     public void onDestroy() {
  151.         super.onDestroy();
  152.         if (googleApiClient != null && googleApiClient.isConnected()) {
  153.             LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
  154.             googleApiClient.disconnect();
  155.         }
  156.         stopSendData();
  157.     }
  159.     public void sendResult(Location location) {
  160.         try {
  161.             if (location == null) return;
  163.             String lat = HelperNumber.convertNumber(new DecimalFormat("##.#####").format(location.getLatitude()));
  164.             String lng = HelperNumber.convertNumber(new DecimalFormat("##.#####").format(location.getLongitude()));
  166.             Intent intent = new Intent(GDS_RESULT);
  167.             intent.putExtra(GDS_SPEED, location.getSpeed());
  168.             intent.putExtra(GDS_LAT, Double.valueOf(lat));
  169.             intent.putExtra(GDS_LON, Double.valueOf(lng));
  170.             intent.putExtra(GDS_BEARING, location.getBearing());
  171.             broadcaster.sendBroadcast(intent);
  173.             if (MyApplication.prefManager.getApiRequestTime() + SEND_LOCATION_TIMER > Calendar.getInstance().getTimeInMillis())
  174.                 return;
  175.             MyApplication.prefManager.setApiRequestTime(Calendar.getInstance().getTimeInMillis());
  177.         } catch (NullPointerException e) {
  178.             e.printStackTrace();
  179.         }
  180.     }
  181. }
英文:

I use location service in my navigation app. The service get location per second. But jumping gps location is like this photo:

在安卓10中跳转GPS位置

In the service used the GoogleApiClient and LocationListener for get best last location. Also used broadcast for send result to app.
and my location service is:

  1. public class LocationService extends Service implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
  2. private static final String TAG = LocationFinder.class.getSimpleName();
  3. private Location location;
  4. private GoogleApiClient googleApiClient;
  5. private LocationRequest locationRequest;
  6. private static final long UPDATE_INTERVAL = 1000, FASTEST_INTERVAL = 1000;
  7. private Context context;
  8. // Send Data to View with BroadCast
  9. static final public String GDS_RESULT = &quot;AE_Find_Location&quot;;
  10. static final public String GDS_SPEED = &quot;Service_SPD&quot;;
  11. static final public String GDS_LAT = &quot;Service_lat&quot;;
  12. static final public String GDS_LON = &quot;Service_lon&quot;;
  13. static final public String GDS_BEARING = &quot;Service_bearing&quot;;
  14. private LocalBroadcastManager broadcaster;
  15. private int SEND_LOCATION_TIMER = 30000;
  16. public static final int REQUEST_CHECK_SETTINGS = 100;
  17. @Override
  18. public void onCreate() {
  19. super.onCreate();
  20. context = getApplicationContext();
  21. // we build google api client
  22. googleApiClient = new GoogleApiClient.Builder(this)
  23. .addApi(LocationServices.API)
  24. .addConnectionCallbacks(this)
  25. .addOnConnectionFailedListener(this).build();
  26. broadcaster = LocalBroadcastManager.getInstance(this);
  27. }
  28. @Override
  29. public int onStartCommand(Intent intent, int flags, int startId) {
  30. if (googleApiClient != null)
  31. googleApiClient.connect();
  32. startSendData();
  33. return START_STICKY;
  34. }
  35. private ArrayList&lt;Location&gt; locations = new ArrayList&lt;&gt;();
  36. private ConcurrentLinkedQueue&lt;Coordinate&gt; queue = new ConcurrentLinkedQueue&lt;&gt;();
  37. private Timer timer;
  38. private TimerTask timerTask = new TimerTask() {
  39. @Override
  40. public void run() {
  41. new Thread(new Runnable() {
  42. @Override
  43. public void run() {
  44. if (location == null) return;
  45. sendResult(location);
  46. }
  47. }).start();
  48. }
  49. };
  50. public void startSendData() {
  51. if (timer != null) {
  52. return;
  53. }
  54. timer = new Timer();
  55. timer.scheduleAtFixedRate(timerTask, 0, 1000);
  56. }
  57. public void stopSendData() {
  58. if (timer == null) return;
  59. timer.cancel();
  60. timer = null;
  61. }
  62. @Nullable
  63. @Override
  64. public IBinder onBind(Intent intent) {
  65. return null;
  66. }
  67. @Override
  68. public void onConnected(Bundle bundle) {
  69. if (ActivityCompat.checkSelfPermission(this,
  70. Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
  71. &amp;&amp; ActivityCompat.checkSelfPermission(this,
  72. Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
  73. return;
  74. }
  75. Log.i(TAG, &quot;onResult: connected&quot;);
  76. LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
  77. .addLocationRequest(locationRequest);
  78. builder.setAlwaysShow(true);
  79. PendingResult&lt;LocationSettingsResult&gt; result =
  80. LocationServices.SettingsApi.checkLocationSettings(
  81. googleApiClient,
  82. builder.build()
  83. );
  84. result.setResultCallback(new ResultCallback&lt;LocationSettingsResult&gt;() {
  85. @Override
  86. public void onResult(LocationSettingsResult locationSettingsResult) {
  87. final Status status = locationSettingsResult.getStatus();
  88. switch (status.getStatusCode()) {
  89. case LocationSettingsStatusCodes.SUCCESS:
  90. // NO need to show the dialog;
  91. break;
  92. case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
  93. try {
  94. status.startResolutionForResult(MyApplication.currentActivity, REQUEST_CHECK_SETTINGS);
  95. } catch (IntentSender.SendIntentException e) {
  96. //failed to show dialog
  97. }
  98. break;
  99. case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
  100. // Location settings are unavailable so not possible to show any dialog now
  101. break;
  102. }
  103. }
  104. });
  105. // Permissions ok, we get last location
  106. location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
  107. startLocationUpdates();
  108. }
  109. private void startLocationUpdates() {
  110. locationRequest = new LocationRequest();
  111. locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
  112. locationRequest.setInterval(UPDATE_INTERVAL);
  113. locationRequest.setFastestInterval(FASTEST_INTERVAL);
  114. if (ActivityCompat.checkSelfPermission(this,
  115. Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
  116. &amp;&amp; ActivityCompat.checkSelfPermission(this,
  117. Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
  118. }
  119. LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
  120. }
  121. @Override
  122. public void onConnectionSuspended(int i) {
  123. }
  124. @Override
  125. public void onConnectionFailed(ConnectionResult connectionResult) {
  126. }
  127. @Override
  128. public void onLocationChanged(Location location) {
  129. if (location != null) {
  130. this.location = location;
  131. }
  132. }
  133. @Override
  134. public void onDestroy() {
  135. super.onDestroy();
  136. // stop location updates
  137. if (googleApiClient != null &amp;&amp; googleApiClient.isConnected()) {
  138. LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
  139. googleApiClient.disconnect();
  140. }
  141. stopSendData();
  142. }
  143. public void sendResult(Location location) {
  144. try {
  145. if (location == null) return;
  146. String lat = HelperNumber.convertNumber(new DecimalFormat(&quot;##.#####&quot;).format(location.getLatitude()));
  147. String lng = HelperNumber.convertNumber(new DecimalFormat(&quot;##.#####&quot;).format(location.getLongitude()));
  148. Intent intent = new Intent(GDS_RESULT);
  149. intent.putExtra(GDS_SPEED, location.getSpeed());
  150. intent.putExtra(GDS_LAT, Double.valueOf(lat));
  151. intent.putExtra(GDS_LON, Double.valueOf(lng));
  152. intent.putExtra(GDS_BEARING, location.getBearing());
  153. broadcaster.sendBroadcast(intent);
  154. if (MyApplication.prefManager.getApiRequestTime() + SEND_LOCATION_TIMER &gt; Calendar.getInstance().getTimeInMillis())
  155. return;
  156. MyApplication.prefManager.setApiRequestTime(Calendar.getInstance().getTimeInMillis());
  157. } catch (NullPointerException e) {
  158. e.printStackTrace();
  159. }
  160. }
  161. }

Thanks about your help.

答案1

得分: 0

你可以设置一个条件语句（if）来检查是否为伪造。

将你的timerTask代码更改为类似以下内容：

  1.     private TimerTask timerTask = new TimerTask() {
  2.             @Override
  3.             public void run() {
  4.                 new Thread(new Runnable() {
  5.                     @Override
  6.                     public void run() {
  7.                         if (location == null) return;
  8.     
  9.                         if (lastLocation != null) {
  10.                             if (Math.abs((lastLocation.distanceTo(location)) / (location.getTime() - lastLocation.getTime())) > 0.06 && counter < 5) {
  11.                                 sendResult(lastLocation);
  12.                                 counter++;
  13.                                 return;
  14.                             }
  15.                         }
  16.                         counter = 0;
  17.                         sendResult(location);
  18.                         lastLocation = location;
  19.                     }
  20.                 }).start();
  21.             }
  22.         };

值 0.6 是用于过滤跳跃 GPS 的阈值。

英文:

You can set a condition statement (if) to check if that is fake or not.

Change your code on timerTask to something like this:

  1.     private TimerTask timerTask = new TimerTask() {
  2. @Override
  3. public void run() {
  4. new Thread(new Runnable() {
  5. @Override
  6. public void run() {
  7. if (location == null) return;
  8. if (lastLocation != null) {
  9. if (Math.abs((lastLocation.distanceTo(location)) / (location.getTime() - lastLocation.getTime())) &gt; 0.06 &amp;&amp; counter&lt;5) {
  10. sendResult(lastLocation);
  11. counter++;
  12. return;
  13. }
  14. }
  15. counter = 0;
  16. sendResult(location);
  17. lastLocation = location;
  18. }
  19. }).start();
  20. }
  21. };

Value 0.6 is a threshold for filter jump GPS.

答案2

得分: 0

最好规范智能手机中跳跃的GPS信号的方法是删除低准确度的位置。
而且低速度时位置准确度较低。
希望这种方法有助于解决这个问题。

英文:

The best way to normalize jumping gps in smartphone is remove locations that the low accuracy.
Also the location accuracy is low on low speeds.
I hope this way useful to resolve this problem.

huangapple
  • 本文由 发表于 2020年7月26日 13:25:17
  • 转载请务必保留本文链接：https://go.coder-hub.com/63096406.html
  • android
  • gps
  • java
  • location
  • location-services
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