如何在Swift 3中對這個數組進行排序？ （選取器視圖）（核心數據）

Question

如何在PickerView中對該數組排序？ 我正在使用Swift 3。

Answer 1

無需每次在titleForRow中對數組進行排序， titleForRow需要在初始化stores數組后對其進行一次排序。

stores.sort { $0.name < $1.name }

現在stores數組是按name屬性排序的，現在只需從titleForRow方法返回名稱titleForRow 。

func numberOfComponents(in pickerView: UIPickerView) -> Int {
    return 1
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
    return stores.count
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    return stores[row].name
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    print(stores[row].name)
}

Answer 2

Swift 3.1：

var arr = ["aaa","zz","ddd","mnm","zzzz"]
var newArr = arr.sorted()
print(newArr)
//log: ["aaa", "ddd", "mnm", "zz", "zzzz"]