Reputation: 367
I'm having some issues when I am running my method. How can I get it working so my mock locations will work on my actual device. (Ps. I've included permissions).
This provides a null pointer exception and I am not to sure why?
Method:
private void setMockLocation() {
{
Context context = null;
LocationManager locationManager = (LocationManager)context.getSystemService( Context.LOCATION_SERVICE );
Criteria criteria = new Criteria();
criteria.setAccuracy( Criteria.ACCURACY_COARSE );
String provider = locationManager.getBestProvider( criteria, true );
if ( provider == null ) {
Log.e( TAG, "No location provider found!" );
return;
}
locationManager.getLastKnownLocation(provider);
Location newLocation = new Location(LocationManager.GPS_PROVIDER);
newLocation.setLatitude(55.9500);
newLocation.setLongitude(3.1833);
newLocation.setAccuracy(500);
mLocationManager.setTestProviderEnabled
(
LocationManager.GPS_PROVIDER,
true
);
mLocationManager.setTestProviderStatus
(
LocationManager.GPS_PROVIDER,
LocationProvider.AVAILABLE,
null,
System.currentTimeMillis()
);
mLocationManager.setTestProviderLocation
(
LocationManager.GPS_PROVIDER,
newLocation
);
}
}
Stack Trace:
05-10 18:50:46.218 14398-14398/com.example.ankhit.saveme E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at com.example.ankhit.saveme.UserLocation.setMockLocation(UserLocation.java:220)
at com.example.ankhit.saveme.UserLocation.access$000(UserLocation.java:42)
at com.example.ankhit.saveme.UserLocation$4.onClick(UserLocation.java:175)
at android.view.View.performClick(View.java:4439)
at android.view.View$PerformClick.run(View.java:18398)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
However, when I add the code below to Context context code shown above I get a 'GPS Provider Unknown' Error
LocationManager locationManager = (LocationManager)context.getSystemService( Context.LOCATION_SERVICE );
Criteria criteria = new Criteria();
criteria.setAccuracy( Criteria.ACCURACY_COARSE );
String provider = locationManager.getBestProvider( criteria, true );
if ( provider == null ) {
Log.e( TAG, "No location provider found!" );
return;
}
lastLocation = locationManager.getLastKnownLocation(provider);
StackTrace:
05-10 18:54:37.395 15159-15159/com.example.ankhit.saveme E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalArgumentException: Provider "gps" unknown
at android.os.Parcel.readException(Parcel.java:1429)
at android.os.Parcel.readException(Parcel.java:1379)
at android.location.ILocationManager$Stub$Proxy.removeTestProvider(ILocationManager.java:956)
at android.location.LocationManager.removeTestProvider(LocationManager.java:1194)
at com.example.ankhit.saveme.UserLocation.setMockLocation(UserLocation.java:218)
at com.example.ankhit.saveme.UserLocation.access$000(UserLocation.java:42)
at com.example.ankhit.saveme.UserLocation$4.onClick(UserLocation.java:175)
at android.view.View.performClick(View.java:4439)
at android.view.View$PerformClick.run(View.java:18398)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
at dalvik.system.NativeStart.main(Native Method)
Any Ideas?
Upvotes: 0
Views: 91
Reputation: 2328
The NullPointerException
should come from
Context context = null;
LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE );
because context
is null
and you invoke a method on it.
Upvotes: 1