Question

当我想在我的字典中添加String(beacons[index].major.stringValue)时，我收到以下错误：

类型的值＆＃34; [String：String]＆＃34;没有会员＆＃39; major＆＃39;

if(beacons.count > 0) {
    let nearestBeacon:CLBeacon = beacons[0]
    for var index = 0; index < beacons.count; index++ {
        let uuidString = "00000000-0000-0000-0000-000000000000"
        var beacons: [Dictionary<String, String>] = []
        beacons.append(["uuid": uuidString, "major": String(beacons[index].major.stringValue), "minor": beacons[index].minor.stringValue, "accurency": String(beacons[index].accuracy)])
        Server.beaconsSend(beacons) { // success, data in
            print(data)
        }
    }
}

Answer 1

这一行

var beacons: [Dictionary<String, String>] = []

正在隐藏原始beacons数组。这意味着在定义它的范围内（for循环的主体），编译器认为beacons总是引用字典数组。简单的答案是重命名它：

for var index = 0; index < beacons.count; index++ {
    let uuidString = "00000000-0000-0000-0000-000000000000"
    var myBeacons: [Dictionary<String, String>] = []
    myBeacons.append(["uuid": uuidString, "major": String(beacons[index].major.stringValue), "minor": beacons[index].minor.stringValue, "accurency": String(beacons[index].accuracy)])
    Server.beaconsSend(myBeacons) { // success, data in
        print(data)
    }
}

Answer 2

可能是因为您在信标数组上遇到条件（如果没有）时创建了信标字典。您创建的信标现在隐藏了信标数组，而您只是引用字典

类型的值＆＃34; [String：String]＆＃34;没有会员＆＃39; major＆＃39;

2 个答案: