Does anyone have a working example on how to parse a JSON array to a collection of objects? All the various examples found on the web/SO seem to break between versions of XCode/Swift.
This is to work in the latest XCode (XCode 6). All the different options I've tried have thrown up errors that just go round in circles.
Sample JSON:
[
{ id: 1, name: "test" },
{ id: 2, name: "test" }
]
My object:
class MyItem {
var id: Int32?
var name: String?
}
I change your definition of MyItem and add extension for printing.
class MyItem {
var id: Int?
var name: String?
init(id: Int?, name: String?){
self.id = id
self.name = name
}
}
extension MyItem: Printable {
var description: String {
return "\(self.id!): \(self.name!)"
}
}
And convert source string to a collection:
var source = "[{ \"id\": 1, \"name\": \"test\" },{ \"id\": 2, \"name\": \"test\" }]"
var results: [MyItem] = []
var err:NSError?
var obj:AnyObject? = NSJSONSerialization.JSONObjectWithData(source.dataUsingEncoding(NSUTF8StringEncoding)!, options:nil, error:&err)
if let items = obj as? NSArray {
for itemDict in items as [NSDictionary] {
var item: MyItem = MyItem(id: itemDict.valueForKey("id")?.integerValue, name: itemDict.objectForKey("name") as? String)
results.append(item)
}
}
println(results)
Some nil cases aren't considered. Just give you a example. You can use this popular lib: https://github.com/SwiftyJSON/SwiftyJSON and trace code in detail if interested.
