Question

我有一个名为'Patient'的全局类和一个'Patient'类型的全局变量

class Patient{
var id: Int
var name: String
var mileage: Double

init(id:Int, name:String, mileage:Double){
    self.id = id
    self.name = name
    self.mileage = mileage
}

}

var pSample: Patient?

这是我将pSample分配给类

的方法

for var i=0; i<nou; ++i{                   
                pSample = Patient(id: json[0][i]["ID"].intValue, name: json[0][i]["Name"].stringValue, mileage: json[0][i]["Mileage"].doubleValue)   
            }

我计划在表格单元格中使用它

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("tableCell", forIndexPath: indexPath) as UITableViewCell

    //everything refers to this
    if pSample != nil {
        let patient = pSample![indexPath.row] //error1
        if let nameLabel = cell.viewWithTag(102) as? UILabel{
            nameLabel.text = patient.name
        }

        if let scoreLabel = cell.viewWithTag(103) as? UILabel{
            scoreLabel.text = String(patient.mileage)
        }
    }else{
        let patient = patientSample[indexPath.row] as Patient
        if let nameLabel = cell.viewWithTag(102) as? UILabel{
            nameLabel.text = patient.name
        }

        if let scoreLabel = cell.viewWithTag(103) as? UILabel{
            scoreLabel.text = String(patient.mileage)
        }
    }

为什么我收到此错误？

错误1：类型患者没有下标成员

Answer 1

您是否对[pSample]和pSample感到困惑？你在for循环中做的只是更新你患者的一个实例。

var pSample: [Patient] = []

for var i=0; i<nou; ++i{                   
    pSample += [Patient(id: json[0][i]["ID"].intValue, name: json[0][i]["Name"].stringValue, mileage: json[0][i]["Mileage"].doubleValue)]   
}

“患者”类型没有下标成员

1 个答案: