struct person{
var name = " "
var sex = " "
var age = " "
}
var personArray: [person] = []
My Xml string contains two group of data
<a>
<name> abc </name>
<sex> male </sex>
<age> 13 </age>
</a>
<a>
<name> bcd </name>
<sex> male </sex>
<age> 14 </age>
</a>
How can i parse this xml string into personArray? i know how to parse a xml string into single object. but i don't know how to parse this into Array.
You can use NSXMLParser (or XMLParser as it now is in Swift 3). NSXMLDocument is also a possibility, but isn't available of iOS, whereas XMLParser is available on all OSs. Here's a simple implementation of your case...
struct Person { // NB capitalised your type - it's good practice
var name = " "
var sex = " "
var age = " "
}
let inputString = "<a><name> abc </name><sex> male </sex><age> 13 </age></a><a><name> bcd </name><sex> male </sex><age> 14 </age></a>"
// Wrap it up or it won't be valid XML
let document = "<doc>" + inputString + "</doc>"
// We can create a parser from a URL, a Stream, or NSData.
if let data = document.data(using: .utf16) { // Get the NSData
let xmlParser = XMLParser(data: data)
let delegate = MyDelegate() // This is your own delegate - see below
xmlParser.delegate = delegate
if xmlParser.parse() {
print("Result \(delegate.personArray)")
// "Result [Person(name: " abc ", sex: " male ", age: " 13 "), Person(name: " bcd ", sex: " male ", age: " 14 ")]\n" - as required
}
}
class MyDelegate: NSObject, XMLParserDelegate {
// Simple state machine to capture fields and add completed Person to array
var personArray: [Person] = []
enum State { case none, name, sex, age }
var state: State = .none
var newPerson: Person? = nil
func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) {
switch elementName {
case "a" :
self.newPerson = Person()
self.state = .none
case "sex":
self.state = .sex
case "name":
self.state = .name
case "age":
self.state = .age
default:
self.state = .none
}
}
func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
if let newPerson = self.newPerson, elementName == "a" {
self.personArray.append(newPerson)
self.newPerson = nil
}
self.state = .none
}
func parser(_ parser: XMLParser, foundCharacters string: String) {
guard let _ = self.newPerson else { return }
switch self.state {
case .name:
self.newPerson!.name = string
case .age:
self.newPerson!.age = string
case .sex:
self.newPerson!.sex = string
default:
break
}
}
func parser(_ parser: XMLParser, parseErrorOccurred parseError: Error) {
}
}
To get it work in Playgrounds you'll need to declare the delegate first (above the invocation), but it reads better this way...
