Swift中經常會遇到字典和字符串的相互轉換，因此可以轉換可以封裝起來，轉換代碼如下:
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func convertStringToDictionary(text: String) -> [String:AnyObject]? { if let data = text.data(using: String.Encoding.utf8) { do { return try JSONSerialization.jsonObject(with: data, options: [JSONSerialization.ReadingOptions.init(rawValue: 0)]) as? [String:AnyObject] } catch let error as NSError { print(error) } } return nil}func convertDictionaryToString(dict:[String:AnyObject]) -> String { var result:String = "" do { //如果設置options為JSONSerialization.WritingOptions.prettyPrinted，則打印格式更好閱讀 let jsonData = try JSONSerialization.data(withJSONObject: dict, options: JSONSerialization.WritingOptions.init(rawValue: 0)) if let JSONString = String(data: jsonData, encoding: String.Encoding.utf8) { result = JSONString } } catch { result = "" } return result}func convertArrayToString(arr:[AnyObject]) -> String { var result:String = "" do { let jsonData = try JSONSerialization.data(withJSONObject: arr, options: JSONSerialization.WritingOptions.init(rawValue: 0)) if let JSONString = String(data: jsonData, encoding: String.Encoding.utf8) { result = JSONString } } catch { result = "" } return result} |
實際測試:
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let jsonText:String = "{\"order_info\":[{\"order_id\":\"1479828084819597144\",\"channel\":\"ios\",\"product_id\":\"02\"},{\"order_id\":\"1479828084819597144\",\"channel\":\"ios\",\"product_id\":\"02\"}]}"let dict = self.convertStringToDictionary(text: jsonText)print("字符串轉換之后的字典:\(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 = self.convertDictionaryToString(dict: dictionaryOrArray)print("字典轉換之后的字符串:\(convertResult)")let array:[String] = ["FlyElephant","keso"]print("數組轉換之后的數組:\(self.convertArrayToString(arr: array as [AnyObject]))") |
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原文鏈接：http://www.jianshu.com/p/210254495d57
