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αʔόʔଆͷ༷มߋʹ
CodableͰରԠ͢Δ
ROPPONGI.swift ୈ1ճ
20182݄23 ࠤ౻߶࢜
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 1
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Who am I
ࠤ౻߶࢜
(@hatakenokakashi)
MAMORIOגࣜձࣾͰiOSΤϯδχΞ͠
͍ͯ·͢ɻ
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 2
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Swift4͔ΒCodable͕
Ճ͞Ε·ͨ͠
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 3
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Codableͱ
• σʔλͷγϦΞϥΠζɺσγϦΞϥΠζΛܕ҆શͰѻ͑Δϓ
ϩτίϧ
• Ҏલ͔Β߹ͬͨNSCodingJSONSerializationɺ
PropertyListSerializationͱҟͳΓܕΛͦͷ··ѻ͑Δ =
more Swifty !
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 4
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Codableͷ͓͞Β͍
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CodableରԠͷܕΛ࡞Δ
struct DeviceRequestData: Codable {
var uuid: String?
var deviceToken: String?
var modelName: String
//JSONͷKeyʹରԠ
//ࣗಈΤϯίʔυɺσίʔυʹͤΔͳΒ`CodingKeys`ͱ͍͏໊લʹ͢Δ
enum CodingKeys: String, CodingKey {
case uuid
case deviceToken = "device_token"
case modelName = "model_name"
}
}
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Τϯίʔυ
let deviceRequestData = DeviceRequestData(uuid: "AAAA",
deviceToken: "aaaaaa",
modelName: "iPhoneX")
let jsonData = try JSONEncoder().encode(deviceRequestData)
let jsonString = String(data: jsonData, encoding: .utf8)!
print(jsonString)
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 7
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JSON͕࡞͞ΕΔ
{
"device_token": "aaaaaa",
"model_name": "iPhoneX",
"uuid": "AAAA"
}
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αʔόʔνʔϜΑΓ༷
มߋͷ͓Βͤ
αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 9
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deviceͱ͍͏ΩʔΛτοϓʹՃ
{
"device": {
"device_token": "aaaaaa",
"model_name": "iPhoneX",
"uuid": "AAAA"
}
}
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͠·͠ΐ͏
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ରԠํ๏1
ܕΛ৽͘͠࡞Δ
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DeviceܕΛՃ
struct Device: Codable {
var uuid: String?
var deviceToken: String?
var modelName: String
enum CodingKeys: String, CodingKey {
case uuid
case deviceToken = "device_token"
case modelName = "model_name"
}
}
struct DeviceRequestData: Codable {
var device: Device
}
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ܕͷϓϩύςΟ
ᴹᴹ
JSONKey
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Τϯίʔυ
let device = Device(uuid: "AAAA", deviceToken: "aaaaaa", modelName: "iPhoneX")
let deviceRequestData = DeviceRequestData(device: device)
let jsonData = try JSONEncoder().encode(deviceRequestData)
let jsonString = String(data: jsonData, encoding: .utf8)!
print(jsonString)
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ରԠํ๏2
ϚχϡΞϧΤϯίʔυ࣮͢Δ
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encode(to:)ϝιουΛ࣮͢Δ
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αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 18
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αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 21
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αʔόʔଆͷ༷มߋʹCodableͰରԠ͢Δ 22
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σʔλ͕nilͳΒjsonͷΩ
ʔΛ֎ͯ͠΄͍͠
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ରԠํ๏
ϚχϡΞϧΤϯίʔυ
&
encodeIfPresentΛ͏
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encodeϝιουͰencodeIfPresent
ͰΤϯίʔυ
func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: RootKeys.self)
var nestObject = container.nestedContainer(keyedBy: CodingKeys.self, forKey: .device)
try nestObject.encode(uuid, forKey: .uuid)
try nestObject.encodeIfPresent(deviceToken, forKey: .deviceToken)
try nestObject.encode(modelName, forKey: .modelName)
}
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nilͷΛೖΕΔ
let deviceRequestData = DeviceRequestData(uuid: nil,
deviceToken: nil,
modelName: "iPhoneX")
let jsonData = try JSONEncoder().encode(deviceRequestData)
let jsonString = String(data: jsonData, encoding: .utf8)!
print(jsonString)
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encodeIfPresentnilͳΒΩʔ͝ͱ
আ
{
"device": {
"model_name": "iPhoneX",
"uuid": null
}
}
encode͕nullʹͳΔ
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طଘͷܕΛCodableʹର
Ԡ͢Δ
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Codableʹ४ڌ͍ͯ͠ͳ͍ܕΛ࣋ͬͯ
͍Δ
struct DeviceRequestData: Codable {
var uuid: String?
var deviceToken: String?
var modelName: ModelName //Codableʹ४ڌ͍ͯ͠ͳ͍ܕ
enum CodingKeys: String, CodingKey {
case uuid
case deviceToken = "device_token"
case modelName = "model_name"
}
}
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ରԠํ๏
Τϯίʔυ͍ͨ࣌͠
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Codableʹ४ڌͤ͞Δ
enum ModelName: String, Codable {
case iPhoneX
case iPhone8
case iPhone8Plus = "iPhone8 Plus"
case iPadPro = "iPad Pro"
}
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Τϯίʔυ
let deviceRequestData =
DeviceRequestData(uuid: "AAAA", deviceToken: "aaaa", modelName: ModelName.iPadPro)
let jsonData = try JSONEncoder().encode(deviceRequestData)
let jsonString = String(data: jsonData, encoding: .utf8)!
print(jsonString)
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݁Ռ
{
"device_token": "aaaa",
"model_name": "iPad Pro",
"uuid": "AAAA"
}
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ରԠํ๏
Τϯίʔυ͠ͳͯ͘Α͍࣌
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ॳظͱCodingKeysʹΩʔΛؚΊͳ
͍
struct DeviceRequestData: Codable {
var uuid: String? = ""
var deviceToken: String? = ""
var modelName: ModelName = ModelName.iPhoneX
enum CodingKeys: String, CodingKey {
case uuid
case deviceToken = "device_token"
}
}
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Τϯίʔυ
let deviceRequestData =
DeviceRequestData(uuid: "AAAA", deviceToken: "aaaa", modelName: ModelName.iPadPro)
let jsonData = try JSONEncoder().encode(deviceRequestData)
let jsonString = String(data: jsonData, encoding: .utf8)!
print(jsonString)
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݁Ռ
{
"device_token": "aaaa",
"uuid": "AAAA"
}
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·ͱΊ
• JSONߏ͕มΘͬͨͱ͖
• ܕΛ࡞Δ͔ϚχϡΞϧΤϯίʔυΛ͢Δ
• σʔλ͕nilͳΒjsonͷΩʔΛ֎͢
• ϚχϡΞϧΤϯίʔυͰencodeIfPresentΛ͏
• Codableʹ४ڌ͠ͳ͍ܕΛ͍࣋ͬͯΔ࣌
• Τϯίʔυ͢ΔͳΒ४ڌ͢Δ
• Τϯίʔυ͠ͳ͍ͳΒCodingKeysͰྻڍΛ֎͢
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͍͞͝ʹ
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ੵۃతʹϝϯόʔืूதʂ
https://www.wantedly.com/companies/mamorio
• iOSΤϯδχΞ
• AndroidΤϯδχΞ
• UI/UXσβΠφʔ
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MAMORIOגࣜձࣾtry! SwiftΛεϙϯαʔ
υ͍ͯ͠·͢!
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