arrays - 将数据附加到 Swift 中的全局数组

Question

在我的应用程序中，我创建了一个全局数组并在不同的类中访问它，但是当我在不同的类中将数据附加到数组时，我只得到最后附加的数据。我的代码是:

struct Vehicle {
    var name: String
    var location: String
    var price: String
    var owner: String
}


class GlobalArray {
    static let shared = GlobalArray()
    var Vehiclecollection = [Vehicle]()
}



class home{

    func addVehicleOne(){

        Vehicle1 = Vehicle(name: "Bus", location: "Delhi", price: "25.5", owner: "Bean")
        var VehicleInfo = GlobalArray.shared.collectionArray
        VehicleInfo.append(Vehicle1)


    }
}

class addVehicle{

    func addVehicleTwo(){
        Vehicle2 = Vehicle(name: "car", location: "mumbai", price: "2.5", owner: "sean")
        var VehicleInfo = GlobalArray.shared.collectionArray
        VehicleInfo.append(Vehicle2)
        addVehicleThree()
    }
    func addVehicleThree(){
        Vehicle3 = Vehicle(name: "bike", location: "bangalore", price: "1.0", owner: "mark")
        var VehicleInfo = GlobalArray.shared.collectionArray
        VehicleInfo.append(Vehicle3)

        print("vehicles are \(VehicleInfo)")

    }
}

当我运行代码时，我得到的结果是:

vehicles are Vehicle(name: "bike", location: "bangalore", price: "1.0", owner: "mark")

为什么我没有得到数组中的所有数据？为什么我只得到最后附加的数据？请让我知道我做错了什么。

Answer 1

您正在引用全局数组并附加到它，您需要将其设置回去:

var VehicleInfo = GlobalArray.shared.collectionArray
VehicleInfo.append(Vehicle3)
GlobalArray.shared.collectionArray = VehicleInfo

或者简单地做:

GlobalArray.shared.collectionArray.append(Vehicle3)