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POError on getting gps location
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  1. POError on getting gps location
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    copied!<p>I'm developing an app that communicates with three remote services on my phone. For the communication i'm trying to figure out which method is the best (intents or AIDL). I receive a stream via bluetooth in a rate of 4 streams/second with 15 bytes each and now i want to add my gps location in order to execute data logging. I need my gps location every second. Since the time in requestLocationUpdates is just a hint, i created a timer which asks for the last known location every second.</p> <p>Unfortunately I'm getting an error that I can't fix when i try to communicate using AIDL. The strange of this is, when i'm using intents to pass the received data to the remote services all works fine.</p> <p>Can anyone help me out ?</p> <p>Here my code:</p> <pre><code> private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 0; //meters private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1000; //in Milliseconds private final MyLocationListener listener; private final LocationManager mLocationManager; private final List&lt;String&gt; providers; public Parser() { mLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); listener = new MyLocationListener(); listener.onProviderEnabled(LocationManager.GPS_PROVIDER); mLocationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER, MINIMUM_TIME_BETWEEN_UPDATES, MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, listener); providers = mLocationManager.getProviders(true); timer = new Timer(); } public boolean parse(byte[] data) { gpsUpdater(); ... } private void gpsUpdater() { timer.scheduleAtFixedRate(new TimerTask() { Location l = null; @Override public void run() { for(String s: providers) { l = mLocationManager.getLastKnownLocation(s); if(l != null) { gps = true; latitude = l.getLatitude(); longitude = l.getLongitude(); } } } }, 0, MINIMUM_TIME_BETWEEN_UPDATES); } public class MyLocationListener implements LocationListener { @Override public void onLocationChanged(Location arg0) { //TODO Auto-generated method stub } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } } </code></pre> <p>and here is the error that i got:</p> <blockquote> <p>04-06 15:06:43.015: E/AndroidRuntime(844): FATAL EXCEPTION: Timer-0 04-06 15:06:43.015: E/AndroidRuntime(844): java.lang.SecurityException: Binder invocation to an incorrect interface 04-06 15:06:43.015: E/AndroidRuntime(844): at android.os.Parcel.readException(Parcel.java:1322) 04-06 15:06:43.015: E/AndroidRuntime(844): at android.os.Parcel.readException(Parcel.java:1276) 04-06 15:06:43.015: E/AndroidRuntime(844): at android.location.ILocationManager$Stub$Proxy.getLastKnownLocation(ILocationManager.java:896) 04-06 15:06:43.015: E/AndroidRuntime(844): at android.location.LocationManager.getLastKnownLocation(LocationManager.java:1020) 04-06 15:06:43.015: E/AndroidRuntime(844): at pt.ua.droidshark.handler.Parser$1.run(Parser.java:446) 04-06 15:06:43.015: E/AndroidRuntime(844): at java.util.Timer$TimerImpl.run(Timer.java:284)</p> </blockquote> <p>Could it be, that the location manager uses a kind of aidl to provide my app with the location and the phone can't handle such amount of information when all the communication is made using AIDL ? I can't understand why it works fine when I use intents and got this error always when i use AIDL.</p> <p>PS: Since someone suggested that the cause could be that the timer isn't in a service or activity class, I created a service in which i execute the code and i got the same situation. Works fine when all communication is made using intents and got the error when using AIDL.</p>
 

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