Ich möchte jedes Mal überprüfen, wenn der Benutzer ein Geschäft aus einer Reihe von Geschäften passiert, dass ich über mehr als 20 Geschäfte verfüge. Daher habe ich eine Funktion geschrieben, die die 20 Geschäfte findet, die dem Standort des Benutzers am nächsten sind, und sie überwacht. Die Liste wird aktualisiert amlocationManager: didUpdateLocations, Ich ersetze auch die alten 20 überwachten Regionen durch die neuen 20 nächstgelegenen Filialen.

Das Problem ist, dasslocationManager: didEnterRegion wird nicht regelmäßig aufgerufen, wenn der Benutzer eine Region eingibt.

Mir ist auch aufgefallen, dass ich beim Überprüfen deslocationManager.monitoredRegions NSSet Die Regionen dort sind aus irgendeinem Grund falsch (ich habe es mit @ überprüif Satz also vielleicht sind sie richtig und nur kürzer?).

Wenn jemand meinen Code überprüfen und vielleicht feststellen könnte, dass ich etwas falsch gemacht habe, hilft es mir wirklich!

Mein Code:

monitorLocationViewController.m (scrollen, um den vollständigen Code zu sehen):

-(void)getStoresArrays:(NSNotification*)notification
{
    //Fetching "allStoresArray"(NSArray of all the stores sent from another class using NSNotificationCenter) and adding it to "allStores"(NSMutableArray)
    NSDictionary *storesCategoriesArrays=[notification userInfo];
    self.allStores=[storesCategoriesArrays objectForKey:@"allStoresArray"];

    //Calling "locationChangeHandler" for monitoring
    [self locationChangeHandler];
}

#pragma mark - CLLocationDelegate methods
//Being called when user's location updated
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    //If "allStores"(NSMutableArray) isn't nil - calling "locationChangeHandler" to update monitoring
    if (self.allStores!=nil) {
        [self locationChangeHandler];
    }
}
//Being called when user enters a monitored region
-(void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    NSLog(@"Entered");
}

#pragma mark - Closest stores sorting methods
//Sorting closest stores to the user's location and adding the 20 closest store to "twentyClosestStores"(NSMutableArray)
-(void)sortClosestStores
{
    //Sorting "allStores"(NSMutableArray) from the closest "Store" to the furthest.
    [self.allStores sortUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
        //Creating "location1"(CLLocation) and "location2"(CLLocation) and initializing each with "obj1"(id) and "obj2"(id) coordinates
        CLLocation *location1=[[CLLocation alloc] initWithLatitude:((Store*)obj1).geoPoint.latitude longitude:((Store*)obj1).geoPoint.longitude];
        CLLocation *location2=[[CLLocation alloc] initWithLatitude:((Store*)obj2).geoPoint.latitude longitude:((Store*)obj2).geoPoint.longitude];

        //Creating "dist1"(float) and setting its value to the distance between "location1"(CLLocation) and the user's location
        float dist1 =[location1 distanceFromLocation:self.locationManager.location];
        //Creating "dist2"(float) and setting its value to the distance between "location2"(CLLocation) and the user's location
        float dist2 = [location2 distanceFromLocation:self.locationManager.location];

        //If the distances are equal - the order will stay the same
        if (dist1 == dist2) {
            return NSOrderedSame;
        }
        else if (dist1 < dist2) { //If "dist1"(float) is smaller than "dist2"(float) - "dist2"(float) will be before "dist1" in the array
            return NSOrderedAscending;
        }
        else { //else - "dist2"(float) will be before "dist1" in the array
            return NSOrderedDescending;
        }
    }];

    //If "twentyClosestStores"(NSMutableArray) is nil
    if (self.twentyClosestStores==nil) {
        //Initializing "twentyClosestStores"(NSMutableArray)
        self.twentyClosestStores=[NSMutableArray array];
    }

    //If "previousTwentyStores"(NSMutableArray) is nil
    if (self.previousTwentyStores==nil) {
        //Initializing "previousTwentyStores"(NSMutableArray)
        self.previousTwentyStores=[NSMutableArray array];
    }
    //Setting "previousTwentyStores"(NSMutableArray) to "twentyClosestStores"(NSMutableArray)
    self.previousTwentyStores=self.twentyClosestStores;
    //Cleaning (reInitializing) "twentyClosestStores"(NSMutableArray)
    self.twentyClosestStores=[NSMutableArray array];

    //Adding indexes 0-19 of "allStores"(NSMutableArray) (20 closest stores to the user's current location) to "twentyClosestStores"(NSMutableArray)
    for (int i = 0; i < 20; i++) {
        [self.twentyClosestStores addObject:[self.allStores objectAtIndex:i]];
    }
}

#pragma mark - Start/stop monitoring methods
//For updating monitoring
-(void)locationChangeHandler
{
    //If "allStores"(NSMutableArray) isn't nil
    if (self.allStores!=nil) {
        //Finding the 20 closest stores to he user's location and adding it to "twentyClosestStores"(NSMutableArray)
        [self sortClosestStores];
        //Stop monitoring "previousTwentyStores"(NSMutableArray) (20 closest stores before user's location  updated)
        [self stopMonitoringStores];
        //Start monitoring "twentyClosestStores"(NSMutableArray)
        [self startMonitoringClosestStores];
    }
}
//Start monitoring "twentyClosestStores"(NSMutableArray)
-(void)startMonitoringClosestStores
{
    //If monitoring isn't availible for "CLCircularRegion"
    if (![CLLocationManager isMonitoringAvailableForClass:[CLCircularRegion class]]) {
        NSLog(@"Monitoring is not available for CLCircularRegion class");
    }

    //Run on all "twentyClosestStores"(NSMutableArray)'s objects
    for (Store *currentStore in self.twentyClosestStores) {
        //Creating "region"(CLCircularRegion) and setting it to "currentStore"(Store)'s circular region
        CLCircularRegion *region=[currentStore createCircularRegion];

        //Start monitoring "region"(CLCircularRegion)
        [self.locationManager startMonitoringForRegion:region];
    }
}
//Stop monitoring "previousTwentyStores"(NSMutableArray) (20 closest stores before user's location  updated)
-(void)stopMonitoringStores
{
    //Run on all "previousTwentyStores"(NSMutableArray)'s objects
    for (Store *currentStore in self.previousTwentyStores) {
        //Creating "region"(CLCircularRegion) and setting it to "currentStore"(Store)'s circular region
         CLCircularRegion *region=[currentStore createCircularRegion];

        //Stop monitoring "region"(CLCircularRegion)
        [self.locationManager stopMonitoringForRegion:region];
    }
}

//Finding a store for region
-(Store*)storeForRegion:(CLCircularRegion*)region
{
    //Creating "latitude"(CGFloat) and "longtitude"(CGFloat) and setting it to "region"(CLCircularRegion)'s center.latitude/longtitude
    CGFloat latitude=region.center.latitude;
    CGFloat longtitude=region.center.longitude;

    //Run on all "allStores"(NSMutableArray)'s objects
    for (Store *currentStore in self.allStores) {

        //If "currentStore"(Store)'s latitude and longtitude is equal to "latitude"(CGFloat) and longtitude(CGFloat)
        if (currentStore.geoPoint.latitude==latitude&&currentStore.geoPoint.longitude==longtitude) {
            //Returning "currentStore"(Store)
            return currentStore;
        }
    }
    //Store not found - returning nil
    NSLog(@"No store found for this region: %@",[region description]);
    return nil;
}

Store.m:

    //Creating and returning a "CLCircularRegion" object of the store
-(CLCircularRegion*)createCircularRegion
{
    //Creating "region"(CLCircularRegion) and initializing it with current store information (self) and radios of 200m
    CLCircularRegion *region=[[CLCircularRegion alloc] initWithCenter:self.geoPoint radius:200 identifier:self.identifier];

    //Setting "region"(CLCircularRegion)'s notifyOnEntry to YES
    region.notifyOnEntry=YES;

    //Returning "region"(CLCircularRegion)
    return region;
}

Note: Die Delegate-Methoden werden aufgerufen, auchdidEnterRegion: aber nicht immer aus irgendeinem Grund.

Problem gelöst

(Ich habe beschlossen, die Regionsüberwachung nicht zu verwenden und es selbst zu tun)

 -(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    [self checkIfNearStore]; //Not being called in background
}

-(void)checkIfNearStore
    {
        for (Store *currentStore in self.allStores) {
            if ([currentStore.circularRegion containsCoordinate:self.locationManager.location.coordinate]&&currentStore.alreadySendNotification==NO) {
                NSLog(@"Entered: %@",[[self storeForRegion:currentStore.circularRegion] address]);
                currentStore.alreadySendNotification=YES;
                [self.storesAlreadySentNotifications addObject:currentStore];
            }
        }

        for (Store *currentStore in self.storesAlreadySentNotifications) {
            if (![currentStore.circularRegion containsCoordinate:self.locationManager.location.coordinate]) {
                currentStore.alreadySendNotification=NO;
            }
        }
    }

Vielen Dank