7-1 Swift API 연결하기

STONE·2024년 12월 2일

iOS swift 개발

Swift_Ios

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주제

Swift API 연결하기

방법

URLSession
Alamofire

URLSession 예제

// get 요청
import Foundation

func fetchAPIData() {
    let urlString = "https://jsonplaceholder.typicode.com/posts"
    guard let url = URL(string: urlString) else { return }

    let task = URLSession.shared.dataTask(with: url) { data, response, error in
        if let error = error {
            print("Error: \(error.localizedDescription)")
            return
        }

        guard let data = data else { return }

        do {
            let json = try JSONSerialization.jsonObject(with: data, options: [])
            print("Response JSON: \(json)")
        } catch {
            print("Failed to parse JSON: \(error.localizedDescription)")
        }
    }
    task.resume()
}

fetchAPIData()

// post 요청
import Foundation

func sendDataToAPI() {
    let urlString = "https://jsonplaceholder.typicode.com/posts"
    guard let url = URL(string: urlString) else { return }

    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")

    let body: [String: Any] = ["title": "foo", "body": "bar", "userId": 1]
    request.httpBody = try? JSONSerialization.data(withJSONObject: body)

    let task = URLSession.shared.dataTask(with: request) { data, response, error in
        if let error = error {
            print("Error: \(error.localizedDescription)")
            return
        }

        if let data = data, let responseString = String(data: data, encoding: .utf8) {
            print("Response: \(responseString)")
        }
    }
    task.resume()
}

sendDataToAPI()

Alamofire

프로젝트에서 Alamofire을 설치하고 사용

https://github.com/Alamofire/Alamofire

// Alamofire GET 요청
import Alamofire

func fetchAPIDataWithAlamofire() {
    let url = "https://jsonplaceholder.typicode.com/posts"

    AF.request(url).responseJSON { response in
        switch response.result {
        case .success(let data):
            print("Response JSON: \(data)")
        case .failure(let error):
            print("Error: \(error.localizedDescription)")
        }
    }
}

fetchAPIDataWithAlamofire()

// Alamofire POST 요청
import Alamofire

func sendDataToAPIWithAlamofire() {
    let url = "https://jsonplaceholder.typicode.com/posts"
    let parameters: [String: Any] = ["title": "foo", "body": "bar", "userId": 1]

    AF.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default).responseJSON { response in
        switch response.result {
        case .success(let data):
            print("Response JSON: \(data)")
        case .failure(let error):
            print("Error: \(error.localizedDescription)")
        }
    }
}

sendDataToAPIWithAlamofire()