Swift often encounters mutual conversion between dictionaries and strings, so it can be converted and encapsulated. The conversion code is as follows:
func convertStringToDictionary(text: String) -> [String:AnyObject]? {
if let data = (using: .utf8) {
do {
return try (with: data, options: [(rawValue: 0)]) as? [String:AnyObject]
} catch let error as NSError {
print(error)
}
}
return nil
}
func convertDictionaryToString(dict:[String:AnyObject]) -> String {
var result:String = ""
do {
//If options is set, the print format will be better read let jsonData = try (withJSONObject: dict, options: (rawValue: 0))
if let JSONString = String(data: jsonData, encoding: .utf8) {
result = JSONString
}
} catch {
result = ""
}
return result
}
func convertArrayToString(arr:[AnyObject]) -> String {
var result:String = ""
do {
let jsonData = try (withJSONObject: arr, options: (rawValue: 0))
if let JSONString = String(data: jsonData, encoding: .utf8) {
result = JSONString
}
} catch {
result = ""
}
return result
}
Actual test:
let jsonText:String = "{\"order_info\":[{\"order_id\":\"1479828084819597144\",\"channel\":\"ios\",\"product_id\":\"02\"},{\"order_id\":\"1479828084819597144\",\"channel\":\"ios\",\"product_id\":\"02\"}]}"
let dict = (text: jsonText)
print("Dictionary after string conversion:\(dict!)")
var dictionaryOrArray : [String: AnyObject] = [:]
dictionaryOrArray["a\"b"] = "cd" as AnyObject?
dictionaryOrArray["strings"] = ["string", "another"] as AnyObject?
dictionaryOrArray["keywdict"] = [ "anotherKey": 100, "Key2": "Val2"] as AnyObject?
dictionaryOrArray["numbers"] = [ 1, 2, 3] as AnyObject?
dictionaryOrArray["bools"] = [ true, false] as AnyObject?
let convertResult:String = (dict: dictionaryOrArray)
print("A string after a dictionary conversion:\(convertResult)")
let array:[String] = ["FlyElephant","keso"]
print("Array after array conversion:\((arr: array as [AnyObject]))")
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