After trying for a while using Apple's documentation, Stackoverflow, Google, I still can't get a simple UIAlertView to show up when I enter or exit a region I am monitoring.
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.distanceFilter = kCLDistanceFilterNone;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
self.locationManager.delegate = self;
[locationManager requestAlwaysAuthorization];
for (CLRegion *monitored in [self.locationManager monitoredRegions])
[locationManager stopMonitoringForRegion:monitored];
CLLocationCoordinate2D coord;
coord.latitude = 31.521603;
coord.longitude = 33.01190;
CLCircularRegion *region = [[CLCircularRegion alloc]initWithCenter:coord radius:20 identifier:#"work"];
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
[self showMessage:[NSString stringWithFormat:#"EnterRegion: %#",region.identifier] andMessage:#"Welcome Home" andButton:#"Ok"];
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
[self showMessage:[NSString stringWithFormat:#"ExitRegion: %#",region.identifier] andMessage:#"Bye Bye" andButton:#"Ok"];
}
-(void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
NSLog(#"Now monitoring for %#", region.identifier);
}
- (void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error{
[self showMessage:#"msg" andMessage:[NSString stringWithFormat:#"Region Failed:%#",region.identifier] andButton:#"ok"];
}
- (void)locationManager:(CLLocationManager *)manager
didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
{
[self showMessage:[NSString stringWithFormat:#"Did Determine State: %#. state:%#",region.identifier, (state == CLRegionStateUnknown) ? #"Unknown" : (state == CLRegionStateInside) ? #"INSIDE" : #"OUTSIDE"] andMessage:#"Determined" andButton:#"Ok"];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ }
showMessage is just a UIAlertView popping to the user.
sometimes I get monitoringDidFailForRegion when I set up the region sometimes I don't.
I was thinking if I should mark my app as using "Background Modes" for Location Updates, but this has not changed a thing. Seems like it should work, but I can never get didEnterRegion nor didExitRegion to be called.
I should point out that I updated the info.plist with the required keys:
<key>NSLocationAlwaysUsageDescription</key>
<string>Location is required for geofence</string>
Background app refresh is set to On, locations enabled. Testing outside, physically, I can't get the functions to be called.
What is it that can be wrong here? is 20 meters too short to define a region?
Could it be that region monitoring is not working for an app that is on the foreground? silencing the callbacks?
Related
I'm using core location library in iOS for finding beacons, I'm in beacon region and the didRangeBeacons callback is triggering but it is always returning an empty array of beacons.
Please find the attached sample code. I have beacon immediate to iPhone, but still, beacon region state is inside when app opened and immediately it is changed to outside state and we are getting an empty array in didRangeBeacons. I have included both NSLocationWhenInUseUsageDescription. The NSLocationAlwaysUsageDescription keys are in the info.plist. The application has location permission set to "always". I'm using both Estimote and Kontakt beacons. OS version is iOS 11.2.6, Device iPhone 5s, Xcode 9.2.
#import "CoreLocationViewController.h"
#interface CoreLocationViewController ()
{
CLLocationManager *locationManager;
CLBeaconRegion *beacon_region;
}
#end
#implementation CoreLocationViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"CoreLocationViewController viewDidLoad");
NSUUID *ProximityUUID = [[NSUUID alloc] initWithUUIDString:#"b94f62c8-1af4-11e8-accf-0ed5f89f718b"];
beacon_region = [[CLBeaconRegion alloc] initWithProximityUUID:ProximityUUID identifier:#"abqwercds"];
[beacon_region setNotifyEntryStateOnDisplay:YES];
[beacon_region setNotifyOnExit:YES];
[beacon_region setNotifyOnEntry:YES];
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
if ([CLLocationManager locationServicesEnabled]){
NSLog(#"Location Services Enabled");
if(IS_OS_8_OR_LATER){
NSLog(#"We are in LocationServicesRequestViewController IS_OS_8_OR_LATER");
NSUInteger code = [CLLocationManager authorizationStatus];
NSLog(#"CLLocationManager authorizationStatus %lu",(unsigned long)code);
if (code == kCLAuthorizationStatusNotDetermined) {
NSLog(#"kCLAuthorizationStatusNotDetermined");
[locationManager requestAlwaysAuthorization];
}
}else{
NSLog(#"We are in LocationServicesRequestViewController IS_OS_8_BELOW");
}
}else{
NSLog(#"authorizationStatus ");
}
}
#pragma mark Location Manager Delegate methods
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error{
NSLog(#"locationManager Error %#",error);
}
-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status{
NSLog(#"Status of location service is %d",status);
if ((status == kCLAuthorizationStatusAuthorizedAlways) || (status == kCLAuthorizationStatusAuthorizedWhenInUse)){
NSLog(#"location service status changed 1");
[locationManager startMonitoringForRegion:beacon_region];
[locationManager requestStateForRegion:beacon_region];
}else{
NSLog(#"location service status changed 2");
}
}
-(void)locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region{
NSLog(#"CLLocationManager Beacon Region State Determine ");
switch (state) {
case CLRegionStateUnknown:
{
NSLog(#" CLLocationManager Region state is unknown %#",region);
[locationManager stopMonitoringForRegion:beacon_region];
break;
}
case CLRegionStateInside:
{
NSLog(#" CLLocationManager Region state is In-Side %#",region);
[locationManager startRangingBeaconsInRegion:beacon_region];
}
case CLRegionStateOutside:
{
NSLog(#" CLLocationManager Region state is Out-Side %#",beacon_region);
[locationManager stopMonitoringForRegion:beacon_region];
break;
}
}
}
-(void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region{
NSLog(#" CLLocationManager Enter into Region %#",region);
[locationManager startRangingBeaconsInRegion:beacon_region];
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
NSLog(#"didExitRegion location manager %#",region );
[locationManager stopMonitoringForRegion:beacon_region];
}
-(void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region{
NSLog(#"CLLocationManager Beacon Monitoring Started for the region %#",region);
}
-(void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error{
NSLog(#"CLLocationManager Monitoring of beacon region %# is failed, Error %#",region,error);
}
-(void)locationManager:(CLLocationManager *)manager rangingBeaconsDidFailForRegion:(CLBeaconRegion *)region withError:(NSError *)error{
NSLog(#"CLLocationManager ranging of beacon region %# is failed, Error %#",region.proximityUUID,error);
}
-(void)locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray<CLBeacon *> *)beacons inRegion:(CLBeaconRegion *)region{
NSLog(#"beacons %#",beacons);
}
- (void)viewDidLoad
{
[super viewDidLoad];
if([CLLocationManager locationServicesEnabled]){
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
CLLocationCoordinate2D companyCenter;
companyCenter.latitude = 23.126272;
companyCenter.longitude = 113.395568;
CLRegion* fkit = [[CLCircularRegion alloc] initWithCenter:companyCenter
radius:500 identifier:#"fkit"];
[self.locationManager startMonitoringForRegion:fkit];
}else{
NSLog(#"not support");
}
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
NSLog(#"Error : %#",error);
}
- (void)locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error
{
NSLog(#"Region monitoring failed with error: %#", [error localizedDescription]);
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(nonnull CLRegion *)region
{
NSLog(#"Entered Region - %#", region.identifier);
}
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(nonnull CLRegion *)region
{
NSLog(#"Entered Enter Region - %#", region.identifier);
}
- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
NSLog(#"Started monitoring %# region", region.identifier);
}
Above is my code. I run in simulator without location,and then set custome location(23.126272,113.395568) in Debug ->location item , and it never call didEnterRegion delegate . anyone can help me ?
PS：my Xcode is 7.1.1, and Console log "Started monitoring fkit region"
You are missing a few steps. You have to add an entry to your info.plist declaring that you want to use location services while your app is in the foreground, (Using the NSLocationWhenInUseUsageDescription key) and then you need to check to see if you have permission, and ask for it if you don't.
Do a search on the string "Requesting Permission to Use Location Services" in the Xcode docs for more information.
Add this line in didStartMonitoringForRegion
[self.locationManager requestStateForRegion:yourregion];
Can you please review following code, it did tries locationManager with delegates, and tries to return current location of device.
But always returns 0 (allowed location permission)
.m
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
self.locationManager.distanceFilter = kCLDistanceFilterNone;
[self.locationManager startUpdatingLocation];
if(IS_OS_8_OR_LATER) {
[self.locationManager requestAlwaysAuthorization];
}
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
if (status == kCLAuthorizationStatusAuthorizedAlways) {
// TODO: Handle status authorized always
} else if (status == kCLAuthorizationStatusNotDetermined) {
// TODO: Handle status not determined
} else {
// TODO: Handle other
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
//NSLog(#"newLocation: %#", newLocation);
}
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
//NSLog(#"Error: %#",[error description]);
}
info.plist
<key>NSLocationAlwaysUsageDescription</key>
<string>We would like to use your location.</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>We would like to use your location.</string>
Please try to call startUpdatingLocation after requestAlwaysAuthorization. and use below didUpdateLocations delegate methods.
if(IS_OS_8_OR_LATER) {
[self.locationManager requestAlwaysAuthorization];
}
[self.locationManager startUpdatingLocation];
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
_currentLocation = [locations objectAtIndex:0];
//do your stuff with the location
}
For Simulator Testing - Select Simulator and goto Debug ->Location -> Apple or City Run
For Device Testing Please check with map if you are getting current location or not . Sometime device not getting current location due to inside of house.
In my app I have registered some CLRegions. My whole functionality lies in these functions:
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
NSLog(#"Entered Region - %#", region.identifier);
[self showRegionAlert:#"Entering Region" forRegion:region.identifier];
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
NSLog(#"Exited Region - %#", region.identifier);
[self showRegionAlert:#"Exiting Region" forRegion:region.identifier];
}
- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
NSLog(#"Started monitoring %# region", region.identifier);
}
This function exists in my code, but I do not do anything inside here:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(#"Location Update:%#",[NSString stringWithFormat:#"%f,%f",newLocation.coordinate.latitude, newLocation.coordinate.longitude]);
}
My question is this:
Is this initialisation necessary?
- (void)initializeLocationUpdates {
[_locationManager startUpdatingLocation];
}
when you only want to account for regions?
No, but you do have to call startMonitoringForRegion: for each of the regions you want to monitor. Like this:
CLRegion *region = // Set up your region
self.locationManager.delegate = self; // Make sure you are set as the location manager's delegate
[self.locationManager startMonitoringForRegion: region]; // Start monitoring the region
See the startMonitoringForRegion: doc on this page
If you're only interested in being notified when entering / leaving regions, it is sufficient to invoke startMonitoringForRegion:. Check out Staying on Track with Location Services (WWDC 2012 Session 303 (Developer Account needed to sign in)).
It might be worth noting that you can monitor 20 regions at most - as stated in the API documentation.
I want to get users current location(lat,long) on the app launch only..i dont want to use delegate method for frequent location updates..I m not using maps just need current location on launch..how should i do this??
I am using the code below but its not working.
CLLocationManager *locationManager;
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate=self;
locationManager.desiredAccuracy=kCLLocationAccuracyBest;
locationManager.distanceFilter=kCLDistanceFilterNone;
[locationManager startUpdatingLocation];
CLLocation *location;
location = [locationManager location];
CLLocationCoordinate2D coord;
coord.longitude = location.coordinate.longitude;
coord.latitude = location.coordinate.latitude;
NSLog(#"latitude %f longitude %f",coord.latitude,coord.longitude);
Output:-
latitude 0.000000 longitude 0.000000
please help..
better you use the delegate method to get user location and in didupdateLocation method stop it
I think this url may help you
iPhone SDK: Track users location using GPS
and in
-(void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation{
CLLocationCoordinate2D here = newLocation.coordinate;
NSLog(#"%f %f ", here.latitude, here.longitude);
[locationManager stopUpdatingLocation];
}
and you done with it...
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
// NSLog(#"didUpdateToLocation: %#", newLocation);
CLLocation *currentLocation = newLocation;
// Reverse Geocoding
// NSLog(#"Resolving the Address");
[geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
// NSLog(#"Found placemarks: %#, error: %#", placemarks, error);
if (error == nil && [placemarks count] > 0) {
placemark = [placemarks lastObject];
[locationManager stopUpdatingLocation];
} else {
NSLog(#"%#", error.debugDescription);
}
} ];
}
Use CLLocationManagerDelegate method
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
[_locationManager stopUpdatingLocation];
NSLog(#"latitude %f longitude %f",newLocation.coordinate.latitude,,newLocation.coordinate.longitude);
}
Above method is deprecated in iOS6, use locationManager:didUpdateLocations: instead
- (void)locationManager:(CLLocationManager *)manager
didUpdateLocations:(NSArray *)locations
import <CoreLocation/CoreLocation.h>
delegate: CLLocationManagerDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// System alert for Allowing current location of user.
// Location manager object creation.
locationManager = [[CLLocationManager alloc] init];`enter code here`
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
}
// iOS >= 6.0.
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
[locationManager stopUpdatingLocation];
}
// iOS < 6.0
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
[locationManager stopUpdatingLocation];
}