Beacon Detector

BeaconDetector.h

//
//  BeaconDetector.h
//  WMWallet
//
//  Created by Friedrich Ewald on 18.02.16.
//  Copyright © 2016 fewald. All rights reserved.
//

#import <Foundation/Foundation.h>
@import CoreLocation;

@interface BeaconDetector : NSObject <CLLocationManagerDelegate>

@property (strong, nonatomic) CLLocationManager *locationManager;

/**
 *  Starts ranging the beacon. In the foreground and background.
 */
- (void) startRangingBeacon;

/**
 *  Stops ranging the beacon, in the foreground and background.
 */
- (void) stopRangingBeacon;

@end

@protocol BeaconDetectorDelegate <NSObject>

- (void) foundBeacon;
- (void) lostBeacon;

@end

BeaconDetector.m

//
//  BeaconDetector.m
//  WMWallet
//
//  Created by Friedrich Ewald on 18.02.16.
//  Copyright © 2016 fewald. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "BeaconDetector.h"

@interface BeaconDetector ()

@property (strong, nonatomic) CLBeaconRegion *region;
@property (strong, nonatomic) NSTimer *timer;

@end

@implementation BeaconDetector

- (id) init {
    self = [super init];
    if (self != nil) {
        // additional initialization
        NSUUID *beaconUUID = [[NSUUID alloc] initWithUUIDString:@"2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6"];
        self.region = [[CLBeaconRegion alloc] initWithProximityUUID:beaconUUID major:0 minor:1 identifier:@"test"];
        self.region.notifyOnEntry = YES;
        self.region.notifyOnExit = YES;
        self.region.notifyEntryStateOnDisplay = YES;
        
        self.locationManager = [[CLLocationManager alloc] init];
        //self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        self.locationManager.delegate = self;
        NSLog(@"init");
    }
    return self;
}

- (void) startRangingBeacon {
    NSLog(@"Starting ranging beacon");
    [self.locationManager startMonitoringForRegion:self.region];
    [self.locationManager startRangingBeaconsInRegion:self.region];
}

- (void) stopRangingBeacon {
    NSLog(@"Stopping ranging beacon");
    [self.locationManager stopRangingBeaconsInRegion:self.region];
}

#pragma mark - CLLocationManagerDelegate

- (void) locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
    NSLog(@"Started monitoring region");
    [self.locationManager requestStateForRegion:self.region];
}

- (void) locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region {
    NSLog(@"did determine state");
    if (state == CLRegionStateInside) {
        NSLog(@"Found beacon");
        
        if (self.timer != nil) {
            NSLog(@"Invalidating timer");
            [self.timer invalidate];
            self.timer = nil;
        }
    }
    else if (state == CLRegionStateOutside) {
        NSLog(@"Lost beacon");
        
        [self notification];
    }
    else if (state == CLRegionStateUnknown) {
        NSLog(@"State unknown");
    }
}

- (void) locationManager:(CLLocationManager *)manager monitoringDidFailForRegion:(CLRegion *)region withError:(NSError *)error {
    NSLog(@"error");
}

- (void) locationManager:(CLLocationManager *)manager rangingBeaconsDidFailForRegion:(CLBeaconRegion *)region withError:(NSError *)error {
    NSLog(@"error");
}

- (void) locationManager:(CLLocationManager *)manager didRangeBeacons:(NSArray<CLBeacon *> *)beacons inRegion:(CLBeaconRegion *)region {
    //NSLog(@"ranging");
}

- (void) notification {
    NSLog(@"Timer fired");
    // Create a local notification
    UILocalNotification *notification = [[UILocalNotification alloc] init];
    notification.fireDate = [NSDate date];
    notification.alertBody = @"Lost the connection to the wallet.";
    notification.timeZone = [NSTimeZone defaultTimeZone];
    notification.soundName = UILocalNotificationDefaultSoundName;
    //notification.applicationIconBadgeNumber = 1;
    [[UIApplication sharedApplication] scheduleLocalNotification:notification];
}


@end