如何在Swift 3中对这个数组进行排序？ （选取器视图）（核心数据）

Question

How can I sort this Array in my PickerView ? I am using Swift 3.

Answer 1

Instead of sorting array every time in titleForRow you need to sort it once after you initialized your stores array.

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

Now stores array is sorted by name property now simply return the name from titleForRow method.

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"]