我通过以下代码创建了一个简单的自动完成文本字段(其中自动完成选项显示在表格 View 中):
import UIKit
class SchoolViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate {
@IBOutlet weak var schoolTextField: UITextField!
@IBOutlet weak var autoCompleteTableView: UITableView!
let schoolPossibilities = ["Redwood", "Fisher", "Bellermen", "Saratoga", "Los Gatos", "Cambell", "Mooreland", "Harker", "Challenger", "Saint Andrews", "Beckens", "Lynbrook", "Menlo", "Gunn", "Aragon", "Kipp"]
var autoCompleteSchools = [String]()
override func viewDidLoad() {
super.viewDidLoad()
autoCompleteTableView.delegate = self
schoolTextField.delegate = self
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "someCell", for: indexPath)
cell.textLabel?.text = autoCompleteSchools[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return autoCompleteSchools.count
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
if let text = schoolTextField.text{
let substring = (text as NSString).replacingCharacters(in: range, with: string)
searchAutoCompleteEntries(withSubstring: substring)
}
return true
}
func searchAutoCompleteEntries(withSubstring substring: String){
autoCompleteSchools.removeAll()
for key in schoolPossibilities{
let string = key as NSString
let range = string.range(of: substring)
if range.location == 0{
autoCompleteSchools.append(key)
}
}
autoCompleteTableView.reloadData()
}
}
问题是选项只有在文本字段中输入的内容完全匹配时才会显示。我如何更改此代码，以便它可以容忍大写和小写字母以及细微的变化？
最佳答案
在
中使用 NSCaseInsensitiveSearch 作为比较选项outputString.rangeOfString(String, options: NSStringCompareOptions, range: <#T##Range<Index>?#>, locale: <#T##NSLocale?#>)
关于ios - 高级自动完成 Swift，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42941361/