AirLocate/APLMonitoringViewController.m

/*
     File: APLMonitoringViewController.m
 Abstract: View controller that illustrates how to start and stop monitoring for a beacon region.
 
  Version: 1.1
 
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 */
 
#import "APLMonitoringViewController.h"
#import "APLDefaults.h"
#import "APLUUIDViewController.h"
@import CoreLocation;
 
 
@interface APLMonitoringViewController () <CLLocationManagerDelegate, UITextFieldDelegate>
 
@property (nonatomic, weak) IBOutlet UISwitch *enabledSwitch;
 
@property (nonatomic, weak) IBOutlet UITextField *uuidTextField;
 
@property (nonatomic, weak) IBOutlet UITextField *majorTextField;
@property (nonatomic, weak) IBOutlet UITextField *minorTextField;
 
@property (nonatomic, weak) IBOutlet UISwitch *notifyOnEntrySwitch;
@property (nonatomic, weak) IBOutlet UISwitch *notifyOnExitSwitch;
@property (nonatomic, weak) IBOutlet UISwitch *notifyOnDisplaySwitch;
 
@property BOOL enabled;
@property NSUUID *uuid;
@property NSNumber *major;
@property NSNumber *minor;
@property BOOL notifyOnEntry;
@property BOOL notifyOnExit;
@property BOOL notifyOnDisplay;
 
@property UIBarButtonItem *doneButton;
 
@property (nonatomic) NSNumberFormatter *numberFormatter;
@property (nonatomic) CLLocationManager *locationManager;
 
- (void)updateMonitoredRegion;
 
@end
 
 
@implementation APLMonitoringViewController
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;
    
    self.numberFormatter = [[NSNumberFormatter alloc] init];
    self.numberFormatter.numberStyle = NSNumberFormatterDecimalStyle;
 
    CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:[NSUUID UUID] identifier:BeaconIdentifier];
    region = [self.locationManager.monitoredRegions member:region];
    if(region)
    {
        self.enabled = YES;
        self.uuid = region.proximityUUID;
        self.major = region.major;
        self.majorTextField.text = [self.major stringValue];
        self.minor = region.minor;
        self.minorTextField.text = [self.minor stringValue];
        self.notifyOnEntry = region.notifyOnEntry;
        self.notifyOnExit = region.notifyOnExit;
        self.notifyOnDisplay = region.notifyEntryStateOnDisplay;
    }
    else
    {
        // Default settings.
        self.enabled = NO;
        
        self.uuid = [APLDefaults sharedDefaults].defaultProximityUUID;
        self.major = self.minor = nil;
        self.notifyOnEntry = self.notifyOnExit = YES;
        self.notifyOnDisplay = NO;
    }
 
    self.doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneEditing:)];
}
 
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    self.uuidTextField.text = [self.uuid UUIDString];
    
    self.enabledSwitch.on = self.enabled;
    self.notifyOnEntrySwitch.on = self.notifyOnEntry;
    self.notifyOnExitSwitch.on = self.notifyOnExit;
    self.notifyOnDisplaySwitch.on = self.notifyOnDisplay;
}
 
#pragma mark - Toggling state
 
- (IBAction)toggleEnabled:(UISwitch *)sender
{
    self.enabled = sender.on;
    
    [self updateMonitoredRegion];
}
 
- (IBAction)toggleNotifyOnEntry:(UISwitch *)sender
{
    self.notifyOnEntry = sender.on;
    [self updateMonitoredRegion];
}
 
- (IBAction)toggleNotifyOnExit:(UISwitch *)sender
{
    self.notifyOnExit = sender.on;
    [self updateMonitoredRegion];
}
 
- (IBAction)toggleNotifyOnDisplay:(UISwitch *)sender
{
    self.notifyOnDisplay = sender.on;
    [self updateMonitoredRegion];
}
 
#pragma mark - Text editing
 
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    if(textField == self.uuidTextField)
    {
        [self performSegueWithIdentifier:@"selectUUID" sender:self];
        return NO;
    }
    
    return YES;
}
 
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    self.navigationItem.rightBarButtonItem = self.doneButton;
}
 
- (void)textFieldDidEndEditing:(UITextField *)textField
{    
    if(textField == self.majorTextField)
    {
        self.major = [self.numberFormatter numberFromString:textField.text];
    }
    else if(textField == self.minorTextField)
    {
        self.minor = [self.numberFormatter numberFromString:textField.text];
    }
    
    self.navigationItem.rightBarButtonItem = nil;
    
    [self updateMonitoredRegion];
}
 
#pragma mark - Managing editing
 
- (IBAction)doneEditing:(id)sender
{
    [self.majorTextField resignFirstResponder];
    [self.minorTextField resignFirstResponder];
    
    [self.tableView reloadData];
}
 
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([[segue identifier] isEqualToString:@"selectUUID"])
    {
        APLUUIDViewController *uuidSelector = [segue destinationViewController];
        
        uuidSelector.uuid = self.uuid;
    }
}
 
- (IBAction)unwindUUIDSelector:(UIStoryboardSegue*)sender
{
    APLUUIDViewController *uuidSelector = [sender sourceViewController];
    
    self.uuid = uuidSelector.uuid;
    [self updateMonitoredRegion];
}
 
- (void)updateMonitoredRegion
{
    // if region monitoring is enabled, update the region being monitored
    CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:[NSUUID UUID] identifier:BeaconIdentifier];
    
    if(region != nil)
    {
        [self.locationManager stopMonitoringForRegion:region];
    }
    
    if(self.enabled)
    {
        region = nil;
        if(self.uuid && self.major && self.minor)
        {
            region = [[CLBeaconRegion alloc] initWithProximityUUID:self.uuid major:[self.major shortValue] minor:[self.minor shortValue] identifier:BeaconIdentifier];
        }
        else if(self.uuid && self.major)
        {
            region = [[CLBeaconRegion alloc] initWithProximityUUID:self.uuid major:[self.major shortValue]  identifier:BeaconIdentifier];
        }
        else if(self.uuid)
        {
            region = [[CLBeaconRegion alloc] initWithProximityUUID:self.uuid identifier:BeaconIdentifier];
        }
        
        if(region)
        {
            region.notifyOnEntry = self.notifyOnEntry;
            region.notifyOnExit = self.notifyOnExit;
            region.notifyEntryStateOnDisplay = self.notifyOnDisplay;
            
            [self.locationManager startMonitoringForRegion:region];
        }
    }
    else
    {
        CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:[NSUUID UUID] identifier:BeaconIdentifier];
        [self.locationManager stopMonitoringForRegion:region];
    }
}
 
@end


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