ibeacon 技术记录

ibeacon是苹果公司在ios7发布的一款硬件，可以感知ibeacon的位置。
ibeacon 只是一个硬件设备，具体我们不过多的聊了，因为我是做软件，更关心代码怎么写。
使用ibeacon的一些代理方法，必须要开启定位权限。

1. 开启定位权限，在plist文件中加入 plist -> source code 添加一下代码

    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>允许</string>
    <key>NSLocationWhenInUseUsageDescription</key>
    <string>允许</string>
    <key>NSLocationAlwaysUsageDescription</key>
    <string>允许</string>

在appdelegate中代码清单如下：

 CLAuthorizationStatus state =   [CLLocationManager authorizationStatus];
    switch (state) {
        case kCLAuthorizationStatusNotDetermined:
        {
            // 用户没有做出选择
            if ([self.locationManger respondsToSelector:@selector(requestAlwaysAuthorization)]) {
            [self.locationManger requestAlwaysAuthorization];
            }
        }
            break;
        case kCLAuthorizationStatusRestricted:
        {
            // 没有获得用户授权
            
        }
            break;
        case kCLAuthorizationStatusDenied:
        {
            // 用户明确禁止了
            
        }
            break;
        case kCLAuthorizationStatusAuthorizedAlways:
        {
            // 用户选择总是运行访问位置
        }
            break;
        case kCLAuthorizationStatusAuthorizedWhenInUse:
        {
            // 用户选择运行期间访问位置
        }
            break;
            
        default:
            break;
    }
    

位置权限获取了。我们开始创建一个region 代码清单如下

- (CLBeaconRegion *)beaconRegion
{
    if (!_beaconRegion) {
        NSUUID *uuid = [[NSUUID alloc] initWithUUIDString:@"00000000-1111-2222-3333-444444444444"];
        _beaconRegion = [[CLBeaconRegion alloc] initWithProximityUUID:uuid identifier:@"region"];
// 用户离开ibeacon区域，会走退出的代理方法
// 感觉 YES 和NO 都不会影响----
        _beaconRegion.notifyOnExit = YES;
        _beaconRegion.notifyOnEntry = YES;
//  设置成Yes,每次屏幕点亮，都会调用locationManager:didDetermineState:forRegion:
        _beaconRegion.notifyEntryStateOnDisplay = YES;
    }
    return _beaconRegion;
}

创建region 有一下几个方法

initWithProximityUUID:identifier:
initWithProximityUUID:major:identifier:
initWithProximityUUID:major:minor:identifier:

uuid、major、minor 都是ibeacon的一些属性。。硬件工程师都会告诉你的。identifier就是region的标志，目的是区分不同的region

两种监听方式:
startMonitoringForRegion：能监听用户的离开和进入，前台后台都能
startMonitoringForRegion ：能监听用户距离ibeacon的距离等一些信息，不能在后台监听

代理方法

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
    // 离开
    NSLog(@"离开");
    LocalPush *localNotification = [[LocalPush alloc] init];
    localNotification.title = @"测试";
    localNotification.body = @"离开了";
    localNotification.soundName = nil;
    localNotification.delayTimeInterval = 0.0;
    [localNotification pushLocalNotification];
}

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    // 进入
    NSLog(@"进入");
    LocalPush *localNotification = [[LocalPush alloc] init];
    localNotification.title = @"测试";
    localNotification.body = @"进入了";
    localNotification.soundName = nil;
    localNotification.delayTimeInterval = 0.0;
    [localNotification pushLocalNotification];
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"失败");
}

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

// 在后台和APP被kill .. 设置了notifyEntryStateOnDisplay = yes ，每次点亮屏幕都会被调用
- (void)locationManager:(CLLocationManager *)manager
      didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
{
    if(state == CLRegionStateInside) {
        NSLog(@"locationManager didDetermineState INSIDE for %@", region.identifier);
    }
    else if(state == CLRegionStateOutside) {
        NSLog(@"locationManager didDetermineState OUTSIDE for %@", region.identifier);
    }
    else {
        NSLog(@"locationManager didDetermineState OTHER for %@", region.identifier);
    }
}

// 没一秒执行一次
- (void)locationManager:(CLLocationManager *)manager
        didRangeBeacons:(NSArray<CLBeacon *> *)beacons inRegion:(CLBeaconRegion *)region
{
        for (CLBeacon *beacon in beacons) {
            NSLog(@" rssi is :%ld",(long)beacon.rssi);
            NSLog(@" beacon proximity :%ld",(long)beacon.proximity);
            NSLog(@" accuracy : %f",beacon.accuracy);
            NSLog(@" proximityUUID : %@",beacon.proximityUUID.UUIDString);
            NSLog(@" major :%ld",(long)beacon.major.integerValue);
            NSLog(@" minor :%ld",(long)beacon.minor.integerValue);
        }
}

总结注意点：
1、必须要开启蓝牙服务 (理解错误了，不需要开启蓝牙)
2、必须要开启定位服务，如果想后台和被kill的状态下，必须是完全允许定位，而不是使用期间允许定位
3、只能监听20个region

DEMO

密码: j5rp