iBeacon介绍

iBeacon是苹果在2013年WWDC上推出一项基于蓝牙4.0（Bluetooth LE | BLE | Bluetooth Smart）的精准微定位技术，当你的手持设备靠近一个Beacon基站时，设备就能够感应到Beacon信号，范围可以从几毫米到50米。因为是一种定位技术，苹果将iBeacon相关的接口放到了CoreLocation.framework。

使用iBeacon的前提条件，是用户开启支持BLE的iOS终端的蓝牙功能，并开启位置信息服务。iOS在接收到iBeacon后，会将UUID告知使用iBeacon的App。在UUID的触发下，App就会被叫醒。 

本文转自Migrant的博客，原文：《Can you Smell the iBeacon?》

1. @implementation ViewController 
2. { 
3.    CBPeripheralManager *_peripheralManager; 
4.    BOOL _isAdvertising; 
5. } 
6.   
7. – (void)_startAdvertising 
8. { 
9.    NSUUID *estimoteUUID = [[NSUUID alloc] initWithUUIDString:@“B9407F30-F5F8-466E-AFF9-25556B57FE6D”]; 
10.   
11.    CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:estimoteUUID 
12.                                                                     major:2 
13.                                                                     minor:1 
14.                                                                identifier:@“SimEstimote”]; 
15.    NSDictionary *beaconPeripheralData = [region peripheralDataWithMeasuredPower:nil]; 
16.   
17.    [_peripheralManager startAdvertising:beaconPeripheralData]; 
18. } 
19.   
20. – (void)_updateEmitterForDesiredState 
21. { 
22.    if (_peripheralManager.state == CBPeripheralManagerStatePoweredOn) 
23.    { 
24.       // only issue commands when powered on 
25.   
26.       if (_isAdvertising) 
27.       { 
28.          if (!_peripheralManager.isAdvertising) 
29.          { 
30.             [self _startAdvertising]; 
31.          } 
32.       } 
33.       else 
34.       { 
35.          if (_peripheralManager.isAdvertising) 
36.          { 
37.             [_peripheralManager stopAdvertising]; 
38.          } 
39.       } 
40.    } 
41. } 
42.   
43. #pragma mark – CBPeripheralManagerDelegate 
44.   
45. – (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral 
46. { 
47.    [self _updateEmitterForDesiredState]; 
48. } 
49.   
50. #pragma mark – Actions 
51.   
52. – (IBAction)advertisingSwitch:(UISwitch *)sender 
53. { 
54.    _isAdvertising = sender.isOn; 
55.   
56.    [self _updateEmitterForDesiredState]; 
57. } 
58.   
59. @end 

1. B9407F30-F5F8-466E-AFF9-25556B57FE6D 

1. @implementation AppDelegate 
2. { 
3.    CLLocationManager *_locationManager; 
4.    BOOL _isInsideRegion; // flag to prevent duplicate sending of notification 
5. } 
6.   
7. – (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)options 
8. { 
9.    // create a location manager 
10.    _locationManager = [[CLLocationManager alloc] init]; 
11.   
12.    // set delegate, not the angle brackets 
13.    _locationManager.delegate = self; 
14.   
15.    NSUUID *estimoteUUID = [[NSUUID alloc] initWithUUIDString:@“B9407F30-F5F8-466E-AFF9-25556B57FE6D”]; 
16.    CLBeaconRegion *region = [[CLBeaconRegion alloc] initWithProximityUUID:estimoteUUID 
17.                                                                identifier:@“Estimote Range”]; 
18.   
19.    // launch app when display is turned on and inside region 
20.    region.notifyEntryStateOnDisplay = YES; 
21.    // isMonitoringAvailableForClass:Returns a Boolean indicating whether the device supports region monitoring using the specified class.
22.    if ([CLLocationManager isMonitoringAvailableForClass:[CLBeaconRegion class]]) 
23.    { 
24.       [_locationManager startMonitoringForRegion:region]; 
25.   
26.       // get status update right away for UI 
27.       [_locationManager requestStateForRegion:region]; 
28.    } 
29.    else 
30.    { 
31.       NSLog(@“This device does not support monitoring beacon regions”); 
32.    } 
33.   
34.     // Override point for customization after application launch. 
35.     return YES; 
36. } 
37.   
38. – (void)_sendEnterLocalNotification 
39. { 
40.    if (!_isInsideRegion) 
41.    { 
42.       UILocalNotification *notice = [[UILocalNotification alloc] init]; 
43.   
44.       notice.alertBody = @“Inside Estimote beacon region!”; 
45.       notice.alertAction = @“Open”; 
46.   
47.       [[UIApplication sharedApplication] scheduleLocalNotification:notice]; 
48.    } 
49.   
50.    _isInsideRegion = YES; 
51. } 
52.   
53. – (void)_sendExitLocalNotification 
54. { 
55.    if (_isInsideRegion) 
56.    { 
57.       UILocalNotification *notice = [[UILocalNotification alloc] init]; 
58.   
59.       notice.alertBody = @“Left Estimote beacon region!”; 
60.       notice.alertAction = @“Open”; 
61.   
62.       [[UIApplication sharedApplication] scheduleLocalNotification:notice]; 
63.    } 
64.   
65.    _isInsideRegion = NO; 
66. } 
67.   
68. – (void)_updateUIForState:(CLRegionState)state 
69. { 
70.    ViewController *vc = (ViewController *)self.window.rootViewController; 
71.   
72.    if (state == CLRegionStateInside) 
73.    { 
74.       vc.label.text = @“Inside”; 
75.    } 
76.    else if (state == CLRegionStateOutside) 
77.    { 
78.       vc.label.text = @“Outside”; 
79.    } 
80.    else 
81.    { 
82.       vc.label.text = @“Unknown”; 
83.    } 
84. } 
85.   
86. #pragma mark – CLLocationManagerDelegate 
87.   
88. – (void)locationManager:(CLLocationManager *)manager 
89.     didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region 
90. { 
91.    // always update UI 
92.    [self _updateUIForState:state]; 
93.   
94.    if ([UIApplication sharedApplication].applicationState == UIApplicationStateActive) 
95.    { 
96.       // don\’t send any notifications 
97.       return; 
98.    } 
99.   
100.    if (state == CLRegionStateInside) 
101.    { 
102.       [self _sendEnterLocalNotification]; 
103.    } 
104.    else 
105.    { 
106.       [self _sendExitLocalNotification]; 
107.    } 
108. } 
109.   
110. @end 

 本文摘自：http://www.cocoachina.com/applenews/devnews/2014/0515/8427.html

参考资料

IBEACON官方文档翻译一：

http://blog.csdn.net/meway/article/details/25311753

iBeacon开发：

http://esoftmobile.com/2013/12/15/ibeacons/

iBeacon技术解析：

http://blog.csdn.net/zengraoli/article/details/19614443

iBeacon是什么 iBeacon怎么用：

http://jingyan.baidu.com/article/4d58d541cb12a59dd4e9c0ef.html

如何使用iOS 7的iBeacons来提高你的应用：

http://www.cocoachina.com/applenews/devnews/2014/0115/7705.html

iOS7的iBeacon技术解析

:http://www.w3c.com.cn/ios7%E7%9A%84ibeacon%E6%8A%80%E6%9C%AF%E8%A7%A3%E6%9E%90

 自己动手 IBeacon 室内定位 完整体验（超详细过程）:

http://blog.csdn.net/u011341435/article/details/18948137

iOS蓝牙调用的一般流程 – ctaodrea:

http://www.tuicool.com/articles/qYv2Mn

iOS CoreBluetooth 教程:

http://zhuhaibobb.blog.163.com/blog/static/2744006720136954416112/

iBeacons开发示例代码:

http://wiki.viewc.com/ibeacons-example-code-cn.html

苹果iOS Developer Library更新（示例代码）:

http://ios.9tech.cn/news/2014/0117/39661.html