ios - NSDataDetector 找不到电话号码结果类型

Question

我正在尝试将这个有效的 Objective C 代码转换为 Swift (which is based on this Apple Documentation)

-(BOOL)validatePhone:(NSString*)phone {
    NSError *error = NULL;
    NSDataDetector *detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypePhoneNumber
                                                               error:&error];

    NSArray *matches = [detector matchesInString:phone
                                         options:0
                                           range:NSMakeRange(0, [phone length])];

    for (NSTextCheckingResult *match in matches) {
        if ([match resultType] == NSTextCheckingTypePhoneNumber) {
            NSString *phoneNumber = [match phoneNumber];
            self.inputPhoneNumber.text = phoneNumber;
            return TRUE;
        }
    }
    NSLog(@"Phone Number Not Found");
    return FALSE;
}

---

这是我的 Swift 转换:

func validatePhone(phone: NSString) -> Bool {
    var error: NSError?
    let detector = NSDataDetector(types: NSTextCheckingType.PhoneNumber.rawValue, error: &error)

    var matches: NSArray = [detector!.matchesInString(phone as String, options: nil, range: NSMakeRange(0, phone.length))]

    var match:NSTextCheckingResult

    for match in matches{
        if match.resultType == NSTextCheckingType.PhoneNumber{
            inputPhoneNumber.text = match.phoneNumber
            return true
        }
    }

    NSLog("Phone Number Not Found")

    return false
}

matches 数组正确匹配输入的电话号码并正确显示类型，如下所示:

但是我的if语句在检查结果类型时总是返回false

if match.resultType == NSTextCheckingType.PhoneNumber

输入测试为 555-555-5555 或 5558881234

那么，我应该如何正确检查 NSTextCheckingType？

Answer 1

试试这个:

var text = "555-555-5555"

let types: NSTextCheckingType = .PhoneNumber
var error : NSError?

let detector = NSDataDetector(types: types.rawValue, error: &error)
var matches = detector!.matchesInString(text, options: nil, range: NSMakeRange(0, count(text)))

for match in matches {
   println(match.phoneNumber!)
}

在上面的代码中，您不需要检查resultType，因为它只有在匹配到电话号码时才进入循环。

但除此之外，如果你想匹配多个类型，如下例所示:

var text = "http://www.example.com"

let types: NSTextCheckingType = .PhoneNumber | .Link
var error : NSError?

let detector = NSDataDetector(types: types.rawValue, error: &error)
var matches = detector!.matchesInString(text, options: nil, range: NSMakeRange(0, count(text)))

您可以使用以下代码来检查是否匹配一个或另一个:

for match in matches {
    if let phone = match.phoneNumber! {
        println(phone)
    }

    if let url = match.URL! {
       println(url)
    }
}

希望对你有帮助