问题描述
这作为字符串返回给我:
result: vierhundertsiebenundachtzig
我将字符串投射到数组中。
self.randomNumberText = Array(self.numberConfig.numberString)
print("\(self.randomNumberText)")
["v","i","e","r","","h","u","n","d","t","s","b","a","c","z","g"]
单词之间有空心引号("")。如何删除这些双引号(“”)? 我在数组中转换字符串的原因:我检查从 TextField 输入的每个字母是否拼写正确。但是,由于中间有“”这个符号,我无法检查它是否拼写正确。
号码配置
class NumberConfig: ObservableObject {
@Published var numberString: String = "-"
@Published var randomNumber: Int = 0 {
didSet {
self.numberString = self.numberToText(number: randomNumber)
}
}
func numberToText(number: Int) -> String {
let formatter = NumberFormatter()
formatter.locale = Locale(identifier: "de")
formatter.numberStyle = .spellOut
formatter.minimumIntegerDigits = 2
let result = formatter.string(for: number) ?? "-"
print("result: \(result)")
return result
}
}
查看
import Combine
struct NumberToTextView: View {
@Observedobject var numberConfig = NumberConfig()
@Observedobject var textBindingManager = TextBindingManager(limit: 1)
@Observedobject var speechConfig = SpeechConfig()
@State var randomNumber: [String.Element] = []
@State var randomNumberText: [String.Element] = []
@State var isCorrectAnswer: Bool = false
@State var isTrueStep: Bool = false
var body: some View {
....
ZStack(alignment: .topLeading) {
TextField("Sayıyı yazınız",text: $textBindingManager.text)
.padding()
.background(Color(UIColor.secondarySystemBackground))
.cornerRadius(15)
.onReceive(Just(self.textBindingManager.text),perform: { value in
let result = zip(self.randomNumberText,value).map({ $0 == $1 }).reduce(true,{$0 && $1})
if result && !self.textBindingManager.text.isEmpty {
self.isTrueStep = true
print("true")
print("valeu: \(value) - \(self.randomNumberText)")
} else {
self.isTrueStep = false
print("falsee")
}
})
Circle()
.foregroundColor(self.isTrueStep ? .green : .red)
.frame(width: 10,height: 10)
.padding(5)
}
.padding(.horizontal)
...
}
}
解决方法
过滤 Character
数组有点棘手,因为空字符串实际上不是字符。
不过有一种方法:过滤所有 ASCII 字符
self.randomNumberText = Array(self.numberConfig.numberString).filter{$0.isASCII }
或过滤所有letters
self.randomNumberText = Array(self.numberConfig.numberString).filter{$0.isLetter }