Swift 删除信标的函数 "unknown" - ibeacon

Question

func filteredBeacons(_ beacons: [CLBeacon]) -> [CLBeacon] {
    var filteredBeacons = beacons   // Copy

    var lookup = Set<String>()
    for index in 0..<beacons.count {


        let currentBeacon = beacons[index]
        let identifier = "\(currentBeacon.major)/\(currentBeacon.minor)"

        if lookup.contains(identifier) {
            filteredBeacons.remove(at: index)
        } else {
            lookup.insert(identifier)
        }

    }

    return filteredBeacons
}

我的理解是此代码将删除所有重复的信标。我现在希望这段代码也能删除接近 "unknown"（即非常远）的信标。有人可以告诉我该怎么做吗？我知道 class 需要 CLProximity。

我是 xcode 的新手，所以如果可能的话，希望得到更多解释。谢谢。

Answer 1

要删除任何具有邻近度的信标 unknown，您只需在循环中添加以下代码段：

if currentBeacon.proximity == .unknown {
   filteredBeacons.remove(at: index)
}

顺便说一下，CLProximity 是一个枚举，因此您可以只写 .unknown 而不是 CLProximity.unknown

Answer 2

尝试：

func filteredBeacons(_ beacons: [CLBeacon]) -> [CLBeacon] {
    var filteredBeacons = beacons   // Copy

    var lookup = Set<String>()
    for index in 0..<beacons.count {    
        let currentBeacon = beacons[index]
        if currentBeacon.proximity == .unknown {
          filteredBeacons.remove(at: index)
        }
        else {
          let identifier = "\(currentBeacon.major)/\(currentBeacon.minor)"

          if lookup.contains(identifier) {
              filteredBeacons.remove(at: index)
          } else {
              lookup.insert(identifier)
          }
        }
    }

    return filteredBeacons
}

Swift 删除信标的函数 "unknown" - ibeacon

Swift function that removes Beacons that are "unknown" - ibeacon

ibeacon

swift