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POAndroid Destination Location
 

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    <p>I'm having trouble setting a destination location for a compass app. Basically it points to a set destination (instead of north). I've got all the math figured out, however, whenever I try to do destinationObj.setLatittude() or setLongitutde() the app force closes.</p> <p>The strange thing is if I put the destinationObj set.Lat/Long in the location listener, that overrides the GPS location, as if the app can only recognize one location and not two.</p> <p>Any guidance please.</p> <p>Thanks,</p> <p>Here is my code:</p> <pre><code>import android.app.Activity; ... public class CompassActivity extends Activity { LocationManager locationManager; Location LocationObj, destinationObj; private SensorEventListener mListener = new SensorEventListener() { public void onSensorChanged( SensorEvent event ) { if ( LocationObj == null ) return; ...bearing calculation... float bearing = LocationObj.bearingTo(destinationObj); rotateImageView( needle, R.drawable.needle, direction); } public void onAccuracyChanged(Sensor sensor, int accuracy) { } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); needle = (ImageView)findViewById(R.id.needle); log = (TextView)findViewById(R.id.log); lat = (TextView)findViewById(R.id.lat); **destinationObj.setLatitude(20); destinationObj.setLongitude(30);** LocationManager mlocManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); LocationListener locationListener = new LocationListener() { public void onLocationChanged(Location location) { LocationObj = location; log.setText(Double.toString(location.getLongitude())); lat.setText(Double.toString(location.getLatitude())); } public void onStatusChanged(String provider, int status, Bundle extras) {} public void onProviderEnabled(String provider) {} public void onProviderDisabled(String provider) {} }; mlocManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER, 0, 0, locationListener); mSensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE); mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION); } private void rotateImageView( ImageView imageView, int drawable, float rotate ) { ...image rotation... } @Override protected void onResume() { super.onResume(); mSensorManager.registerListener(mListener, mSensor, SensorManager.SENSOR_DELAY_GAME); } @Override protected void onStop() { mSensorManager.unregisterListener(mListener); super.onStop(); } } </code></pre>
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