(Kontakt.io) iBeacon didEnterRegion 没有被解雇

Question

我有三个全新的 Kontakt.io 信标，并使用this tutorial 和它的source 尝试用我的 iPhone 4s 识别它们。我所做的只是更改 UUID（所有 Kontakt.io 信标从一开始就具有相同的 UUID）并添加一些代码：

此行应该强制应用检查它是否已经在该区域中

[self.locationManager requestStateForRegion:self.myBeaconRegion];

这些行应该检查系统是否以正确的方式设置：

NSArray *locationServicesAuthStatuses = @[@"Not determined",@"Restricted",@"Denied",@"Authorized"];
NSArray *backgroundRefreshAuthStatuses = @[@"Restricted",@"Denied",@"Available"];

BOOL monitoringAvailable = [CLLocationManager isMonitoringAvailableForClass:[self.myBeaconRegion class]];
NSLog(@"Monitoring available: %@", [NSNumber numberWithBool:monitoringAvailable]);

int lsAuth = (int)[CLLocationManager authorizationStatus];
NSLog(@"Location services authorization status: %@", [locationServicesAuthStatuses objectAtIndex:lsAuth]);

int brAuth = (int)[[UIApplication sharedApplication] backgroundRefreshStatus];
NSLog(@"Background refresh authorization status: %@", [backgroundRefreshAuthStatuses objectAtIndex:brAuth]);

当我启动应用程序时，我的手机旁边有 iBeacons，didEnterRegion 不会被触发。此外，当我取出电池并将它们放回原处时（模拟超出范围并重新进入），没有任何反应。当我使用真正的 iBeacons 时，其他 Github 示例代码对我也不起作用，只有当我使用另一部 iPhone 传输信号时。

这是 ViewController.h：

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

// Initialize location manager and set ourselves as the delegate
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;

// Create a NSUUID with the same UUID as the broadcasting beacon
NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:@"A77A1B68-49A7-4DBF-914C-760D07FBB87B"];

// Setup a new region with that UUID and same identifier as the broadcasting beacon
self.myBeaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid
                                                         identifier:@"com.appcoda.testregion"];

// Tell location manager to start monitoring for the beacon region
[self.locationManager startMonitoringForRegion:self.myBeaconRegion];

// Force app to check if it's already IN the region
[self.locationManager requestStateForRegion:self.myBeaconRegion];

// Check if beacon monitoring is available for this device
if (![CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]]) {

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Monitoring not available" message:nil delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles: nil]; [alert show]; return;
}

NSArray *locationServicesAuthStatuses = @[@"Not determined",@"Restricted",@"Denied",@"Authorized"];
NSArray *backgroundRefreshAuthStatuses = @[@"Restricted",@"Denied",@"Available"];

BOOL monitoringAvailable = [CLLocationManager isMonitoringAvailableForClass:[self.myBeaconRegion class]];
NSLog(@"Monitoring available: %@", [NSNumber numberWithBool:monitoringAvailable]);

int lsAuth = (int)[CLLocationManager authorizationStatus];
NSLog(@"Location services authorization status: %@", [locationServicesAuthStatuses objectAtIndex:lsAuth]);

int brAuth = (int)[[UIApplication sharedApplication] backgroundRefreshStatus];
NSLog(@"Background refresh authorization status: %@", [backgroundRefreshAuthStatuses objectAtIndex:brAuth]);
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

- (void)locationManager:(CLLocationManager*)manager didEnterRegion:(CLRegion *)region
{
// We entered a region, now start looking for our target beacons!
self.statusLabel.text = @"Finding beacons.";
[self.locationManager startRangingBeaconsInRegion:self.myBeaconRegion];
}

-(void)locationManager:(CLLocationManager*)manager didExitRegion:(CLRegion *)region
{
// Exited the region
self.statusLabel.text = @"None found.";
[self.locationManager stopRangingBeaconsInRegion:self.myBeaconRegion];
}

-(void)locationManager:(CLLocationManager*)manager
   didRangeBeacons:(NSArray*)beacons
          inRegion:(CLBeaconRegion*)region
{
// Beacon found!
self.statusLabel.text = @"Beacon found!";

CLBeacon *foundBeacon = [beacons firstObject];

// You can retrieve the beacon data from its properties
//NSString *uuid = foundBeacon.proximityUUID.UUIDString;
//NSString *major = [NSString stringWithFormat:@"%@", foundBeacon.major];
//NSString *minor = [NSString stringWithFormat:@"%@", foundBeacon.minor];
}

这是 NSLog 输出：

2014-05-29 00:49:19.951 BeaconReceiver[2803:60b] Monitoring available: 1
2014-05-29 00:49:19.967 BeaconReceiver[2803:60b] Location services authorization status: Authorized
2014-05-29 00:49:20.109 BeaconReceiver[2803:60b] Background refresh authorization status: Available

非常感谢您的帮助！！

Answer 1

首先，验证您是否可以使用现成的应用程序（例如 Locate for iBeacon）检测信标：https://itunes.apple.com/us/app/locate-for-ibeacon/id738709014?mt=8。它将验证信标是否正常工作，并且 UUID 是否已配置为您所期望的。

一旦您确定信标可以与您的设备配合使用，然后开始对您的代码进行故障排除。

编辑：还要确保在测试前重新启动手机，以防止已知的 iOS 7.1 错误；：https://stackoverflow.com/a/22949187/1461050