Android Ağ İstekleri: Retrofit ve OkHttp ile API Bağlantısı

1dependencies {
2implementation 'com.squareup.retrofit2:retrofit:2.9.0'
3implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
4implementation 'com.squareup.okhttp3:okhttp:4.10.0'
5implementation 'com.squareup.okhttp3:logging-interceptor:4.10.0'
6}

1interface ApiService {
2@GET("users/{id}")
3suspend fun getUser(@Path("id") userId: Int): Response<User>
4
5@POST("users")
6suspend fun createUser(@Body user: User): Response<User>
7}
8
9data class User(
10val id: Int,
11val name: String,
12val email: String
13)

1val okHttpClient = OkHttpClient.Builder().connectTimeout(30, TimeUnit.SECONDS).readTimeout(30, TimeUnit.SECONDS).addInterceptor(HttpLoggingInterceptor().apply {
2level = HttpLoggingInterceptor.Level.BODY
3}).build()
4
5val retrofit = Retrofit.Builder().baseUrl("https://api.example.com/").client(okHttpClient).addConverterFactory(GsonConverterFactory.create()).build()
6
7val apiService = retrofit.create(ApiService::class.java)

1viewModelScope.launch {
2try {
3val response = apiService.getUser(1)
4if (response.isSuccessful) {
5val user = response.body()
6println("Kullanıcı: ${user?.name}")
7} else {
8println("Hata: ${response.code()} - ${response.message()}")
9}
10} catch (e: IOException) {
11println("Ağ hatası: ${e.message}")
12} catch (e: Exception) {
13println("Bilinmeyen hata: ${e.message}")
14}
15}

1Kullanıcı: Ali Yılmaz

1Ağ hatası: Unable to resolve host