[英]Extracting address elements from a String using NSDataDetector in Swift 3.0
I'm attempting to use NSDataDetector
to addresses from a string. 我正在尝试使用
NSDataDetector
来处理字符串。 I've taken a look at NSHipster's article on NSDataDetector
as well as Apple's NSDataDetector documentation . 我已经看到了在NSHipster对第
NSDataDetector
以及苹果的NSDataDetector文档 。 I've got the following method to the point where it'll pull addresses out of a string: 我有以下方法,它将从字符串中提取地址:
func getAddress(from dataString: String) -> [String] {
let detector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.address.rawValue)
let matches = detector.matches(in: dataString, options: [], range: NSRange(location: 0, length: dataString.utf16.count))
var addressArray = [String]()
// put matches into array of Strings
for match in matches {
let address = (dataString as NSString).substring(with: match.range)
addressArray.append(address)
}
return addressArray
}
I'd like to pull out elements of addresses, not the entire address. 我想提取地址的元素,而不是整个地址。 In NSHipster's
NSDataDetector
post in the Data Detector Match Types section, I see address components such as NSTextCheckingCityKey
, NSTextCheckingStateKey
, and NSTextCheckingZIPKey
. 在数据检测器匹配类型部分的NSHipster的
NSDataDetector
帖子中,我看到地址组件,如NSTextCheckingCityKey
, NSTextCheckingStateKey
和NSTextCheckingZIPKey
。 I'm unable to use those keys in the NSDataDetector
's initialization. 我无法在
NSDataDetector
的初始化中使用这些键。
I dug around on GitHub to see if I could find an example to crib from, but the only stuff I'm able to find is Objective-C code or declarative stuff in the master Swift repo. 我在GitHub上挖了一下,看看我是否能找到一个来自crib的例子,但我能找到的唯一东西是主Swift repo中的Objective-C代码或声明性东西。
I'm 99% sure I can pull out the individual components of an address, but I'm too dumb to figure it out. 我99%肯定我可以拿出一个地址的各个组成部分,但我太笨了,无法弄明白。 Thank you for reading.
谢谢你的阅读。 I welcome suggestions.
我欢迎建议。
I haven't used this class before, but it looks like it returns objects of type NSTextCheckingResult
. 我之前没有使用过这个类,但它看起来像是返回
NSTextCheckingResult
类型的NSTextCheckingResult
。 If you get a result of type NSTextCheckingTypeAddress
then you can ask the result for it's addressComponents
, which will be a dictionary containing the different parts of the address. 如果您得到
NSTextCheckingTypeAddress
类型的结果,那么您可以向结果询问它的addressComponents
,它将是包含地址不同部分的字典。
Here is some working playground code I just banged out: 这是我刚刚敲定的一些工作游乐场代码:
import UIKit
var string = "Now is the time for all good programmers to babble incoherently.\n" +
"Now is the time for all good programmers to babble incoherently.\n" +
"Now is the time for all good programmers to babble incoherently.\n" +
"123 Elm Street\n" +
"Daton, OH 45404\n" +
"Now is the time for all good programmers to babble incoherently.\n" +
"2152 E Street NE\n" +
"Washington, DC 20001"
let results = getAddress(from: string)
print("matched \(results.count) addresses")
for result in results {
let city = result[NSTextCheckingCityKey] ?? ""
print("address dict = \(result).")
print(" City = \"\(city)\"")
}
func getAddress(from dataString: String) -> [[String: String]] {
let detector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.address.rawValue)
let matches = detector.matches(in: dataString, options: [], range: NSRange(location: 0, length: dataString.utf16.count))
var resultsArray = [[String: String]]()
// put matches into array of Strings
for match in matches {
if match.resultType == .address,
let components = match.addressComponents {
resultsArray.append(components)
} else {
print("no components found")
}
}
return resultsArray
}
This code prints: 此代码打印:
matched 2 addresses
匹配2个地址
address dict = ["Street": "123 Elm Street", "ZIP": "45404", "City": "Daton", "State": "OH"].
地址dict = [“Street”:“123 Elm Street”,“ZIP”:“45404”,“City”:“Daton”,“State”:“OH”]。 City = "Daton"
City =“Daton”
address dict = ["Street": "2152 E Street NE", "ZIP": "20001", "City": "Washington", "State": "DC"].
地址dict = [“Street”:“2152 E Street NE”,“ZIP”:“20001”,“City”:“Washington”,“State”:“DC”]。 City = "Washington"
城市=“华盛顿”
You can easily extract all addresses, URLs and phone numbers using NSDataDetector. 您可以使用NSDataDetector轻松提取所有地址,URL和电话号码。
Swift 4.2 Swift 4.2
let string = "This is an address PO Box 7775, San Francisco, CA. This is a url
http:/
www.swiftdevcenter.com/. This is second url: https://www.google.com/. This is
mobile number
+18987656789. This is a date 01/26/2019"
let detectorType: NSTextCheckingResult.CheckingType = [.address, .phoneNumber,
.link, .date]
do {
let detector = try NSDataDetector(types: detectorType.rawValue)
let results = detector.matches(in: string, options: [], range:
NSRange(location: 0, length: string.utf16.count))
for result in results {
if let range = Range(result.range, in: string) {
let matchResult = string[range]
print("result: \(matchResult), range: \(result.range)")
}
}
} catch {
print("handle error")
}
For address use only 仅供地址使用
let detectorType: NSTextCheckingResult.CheckingType = [.address]
Credits: http://www.swiftdevcenter.com/how-to-detect-url-address-phone-number-and-dates-using-nsdatadetector/ 致谢: http : //www.swiftdevcenter.com/how-to-detect-url-address-phone-number-and-dates-using-nsdatadetector/
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