locationmanager

问题 I am developing an iOS app to monitor iBeacons. It works well in both foreground and background. I also need it to keep monitoring even when the screen is off. Now my problem is, when I turn off the screen with the shoulder button, NSLog shows that the iBeacon signal goes off (RSSI=0, beacon.accuracy=-1.0) accordingly, and 10 seconds later, there is no beacon found at all, while the delegate method locationManager:didRangeBeacons:inRegion: is called continuously. It seems that the app is

问题 ios sdk has great region monitoring functions. I need something like that in android and i think we have two alternatives. Geofencing and LocationManager. Geofencing has really tidy examples and bugs , so i prefered LocationManager. Everyting works fine in LocationManager except one. If you add your current location as ProximityAlert , it immediatly fires "ENTERING" , but it is my current location , it doesnt mean that i entered this region. Because of that , it fires "ENTERING" each time i

问题 I am using LocationManager to convert from lat,longi to get the city name, but I am getting wrong results, I think there is something wrong in this code here: locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); // Define the criteria how to select the locatioin provider -> use // default Criteria criteria = new Criteria(); provider = locationManager.getBestProvider(criteria, false); Location location = locationManager.getLastKnownLocation(provider); // Initialize

问题 I am developing android app to get my current longitude and latitude from GPS. I have the following code public class setting extends Activity { TextView longval; TextView latval; @Override public void onCreate(Bundle savedInstanceState){ /** Called when the activity is first created. */ super.onCreate(savedInstanceState); setContentView(R.layout.setting); longval = (TextView)findViewById(R.id.longitudefield); latval = (TextView)findViewById(R.id.latitudefield); LocationManager

问题 This question already has answers here : iPhone CLLocationManager updates every 0.5 seconds (2 answers) Closed 5 years ago . I want to get location updates exactly once per second. This interval is important for an animation I want to create to keep true-to-life speed over the ground. I understand that [myLocationManager startUpdatingLocation] will automatically poll "didUpdateToLocations", but it is not quite exactly once per second. Is there any way to use NSTimer to get my location exactly

问题 I have a problem here and I cant get it to work... I want to get the latest gps positions but all i get is an null pointer exception. It works with the first class GPSActivity but not with the 2nd SmsReceiver. I read that this is maybe because I have to pass the Context to the 2nd class but I dont know how... please help! Here comes the code: GPSActivity.class : import android.app.Activity; import android.content.Context; import android.location.Location; import android.location

问题 Through nearly all problems/answers here and on the web, the best way for current location is as follows: if ( mLocationManager==null ) mLocationManager = (LocationManager) getSystemService(LOCATION_SERVICE); Location l; for ( String provider : mLocationManager.getAllProviders() ){ mLocationManager.requestLocationUpdates(provider, 1000, 1, locationListener); l = mLocationManager.getLastKnownLocation(provider); if ( isBetterLocation(l, currentBestLocation) ) currentBestLocation = l; } normally

问题 I'm using code from: http://www.veasoftware.com/tutorials/2014/6/17/xcode-5-tutorial-ios-7-simple-compass-app In Xcode 6 I get the error below. The app still runs, but this error is really annoying me. self.locationManager.delegate = self; //Assigning to 'id<CLLocationManagerDelegate>' from incompatible type 'ViewController *const __strong' 回答1: I guess you forgot to comply with the Core Location Delegate protocol by adding <CLLocationManagerDelegate> after @interface in the header file. 回答2:

问题 Im writing an application that supposed to send coordinates in an SMS, but I've been struggling a bit with understanding how to get the coordinates. At the moment I'm using this LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE); Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); longitude = location.getLongitude(); latitude = location.getLatitude(); And then i pass the long and lat into the text, but this only gives me the last know

问题 I am getting the longitude and latitude of my device, but it takes at 30 seconds to a minute to do so. Any suggestions to cut the time down? public class MainActivity extends Activity { public String zipcode; public double latG; public double lonG; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); LocationManager service = (LocationManager) getSystemService(LOCATION_SERVICE); boolean enabled = service