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  1. PO
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    <p>Looks like we're coding the same application ;-)<br> Here is my current implementation. I'm still in the beta testing phase of my GPS uploader app, so there might be many possible improvements. but it seems to work pretty well so far.</p> <pre><code>/** * try to get the 'best' location selected from all providers */ private Location getBestLocation() { Location gpslocation = getLocationByProvider(LocationManager.GPS_PROVIDER); Location networkLocation = getLocationByProvider(LocationManager.NETWORK_PROVIDER); // if we have only one location available, the choice is easy if (gpslocation == null) { Log.d(TAG, "No GPS Location available."); return networkLocation; } if (networkLocation == null) { Log.d(TAG, "No Network Location available"); return gpslocation; } // a locationupdate is considered 'old' if its older than the configured // update interval. this means, we didn't get a // update from this provider since the last check long old = System.currentTimeMillis() - getGPSCheckMilliSecsFromPrefs(); boolean gpsIsOld = (gpslocation.getTime() &lt; old); boolean networkIsOld = (networkLocation.getTime() &lt; old); // gps is current and available, gps is better than network if (!gpsIsOld) { Log.d(TAG, "Returning current GPS Location"); return gpslocation; } // gps is old, we can't trust it. use network location if (!networkIsOld) { Log.d(TAG, "GPS is old, Network is current, returning network"); return networkLocation; } // both are old return the newer of those two if (gpslocation.getTime() &gt; networkLocation.getTime()) { Log.d(TAG, "Both are old, returning gps(newer)"); return gpslocation; } else { Log.d(TAG, "Both are old, returning network(newer)"); return networkLocation; } } /** * get the last known location from a specific provider (network/gps) */ private Location getLocationByProvider(String provider) { Location location = null; if (!isProviderSupported(provider)) { return null; } LocationManager locationManager = (LocationManager) getApplicationContext() .getSystemService(Context.LOCATION_SERVICE); try { if (locationManager.isProviderEnabled(provider)) { location = locationManager.getLastKnownLocation(provider); } } catch (IllegalArgumentException e) { Log.d(TAG, "Cannot acces Provider " + provider); } return location; } </code></pre> <p><strong>Edit:</strong> here is the part that requests the periodic updates from the location providers:</p> <pre><code>public void startRecording() { gpsTimer.cancel(); gpsTimer = new Timer(); long checkInterval = getGPSCheckMilliSecsFromPrefs(); long minDistance = getMinDistanceFromPrefs(); // receive updates LocationManager locationManager = (LocationManager) getApplicationContext() .getSystemService(Context.LOCATION_SERVICE); for (String s : locationManager.getAllProviders()) { locationManager.requestLocationUpdates(s, checkInterval, minDistance, new LocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) {} @Override public void onProviderEnabled(String provider) {} @Override public void onProviderDisabled(String provider) {} @Override public void onLocationChanged(Location location) { // if this is a gps location, we can use it if (location.getProvider().equals( LocationManager.GPS_PROVIDER)) { doLocationUpdate(location, true); } } }); // //Toast.makeText(this, "GPS Service STARTED", // Toast.LENGTH_LONG).show(); gps_recorder_running = true; } // start the gps receiver thread gpsTimer.scheduleAtFixedRate(new TimerTask() { @Override public void run() { Location location = getBestLocation(); doLocationUpdate(location, false); } }, 0, checkInterval); } public void doLocationUpdate(Location l, boolean force) { long minDistance = getMinDistanceFromPrefs(); Log.d(TAG, "update received:" + l); if (l == null) { Log.d(TAG, "Empty location"); if (force) Toast.makeText(this, "Current location not available", Toast.LENGTH_SHORT).show(); return; } if (lastLocation != null) { float distance = l.distanceTo(lastLocation); Log.d(TAG, "Distance to last: " + distance); if (l.distanceTo(lastLocation) &lt; minDistance &amp;&amp; !force) { Log.d(TAG, "Position didn't change"); return; } if (l.getAccuracy() &gt;= lastLocation.getAccuracy() &amp;&amp; l.distanceTo(lastLocation) &lt; l.getAccuracy() &amp;&amp; !force) { Log.d(TAG, "Accuracy got worse and we are still " + "within the accuracy range.. Not updating"); return; } if (l.getTime() &lt;= lastprovidertimestamp &amp;&amp; !force) { Log.d(TAG, "Timestamp not never than last"); return; } } // upload/store your location here } </code></pre> <p><strong>Things to consider:</strong></p> <ul> <li><p>do not request GPS updates too often, it drains battery power. I currently use 30 min as default for my application. </p></li> <li><p>add a 'minimum distance to last known location' check. without this, your points will "jump around" when GPS is not available and the location is being triangulated from the cell towers. or you can check if the new location is outside of the accuracy value from the last known location.</p></li> </ul>
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    1. POGood way of getting the user's location in Android
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    1. COYou never actually get a fresh location, you only use locations that happens to be there from previous updates. I think this code would benefit greatly by actually adding a listener that updates the location by turning on the GPS from time to time.
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    2. COsorry, I thought you were only interested in the part that selects the best from all available locations. I added the code above that requests these as well. if a new gps location is received, it is stored/uploaded right away. if I receive a network location update I store it for reference and 'hope' that I'll receive a gps update as well until the next location check happens.
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    3. COEven though this does not directly answer my question it is the most related answer, therefor I'm awarding you the bounty, thanks for your help!
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