Retrofit2 | #1

Зависимости для build.gradle:

implementation "com.squareup.retrofit2:retrofit:2.9.0"
implementation "com.squareup.retrofit2:converter-gson:2.9.0"

Product.kt

data class Product(
    val id: Int,
    val title: String,
    val description: String,
    val price: Int,
    val discountPercentage: Float,
    val rating: Float,
    val stock: Int,
    val brand: String,
    val category: String,
    val thumbnail: String,
    val images: List<String>
)

ProductApi.kt

import retrofit2.http.GET
import retrofit2.http.Path

interface ProductApi {
    @GET("products/{id}")
    suspend fun getProductById(@Path("id") id: Int): Product
}

Разрешение в манифест:

<uses-permission android:name="android.permission.INTERNET"/>

activity_main.kt

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.157" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Get"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import com.example.retrofitlesson.retrofit.ProductApi
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val tv = findViewById<TextView>(R.id.tv)
        val b = findViewById<Button>(R.id.button)

        val retrofit = Retrofit.Builder()
            .baseUrl("https://dummyjson.com")
            .addConverterFactory(GsonConverterFactory.create()).build()
        val productApi = retrofit.create(ProductApi::class.java)

        b.setOnClickListener {
            CoroutineScope(Dispatchers.IO).launch {
                val product = productApi.getProductById(3)
                runOnUiThread {
                   tv.text = product.title
                }
            }
        }
    }
}

6 комментариев для “Retrofit2 | #1”

  1. ghfjhfjffhfhgf

    Будь ты проклят !!! Ни один из твоих уроков не работает – приложения сбрасывает с ошибкой !!! Удали, сука все свои уроки и не трать время людей которые хотят учиться , ты паразит чёртов !!!

    Ответить
    1. bartimeys

      data class Dimensions(
      val width:Float,
      val height: Float,
      val depth: Float
      )
      data class Meta(
      val createdAt: String,
      val updatedAt: String,
      val barcode: String,
      val qrCode: String
      )
      data class Reviews(
      val rating: Int,
      val comment: String,
      val date: String,
      val reviewerName: String,
      val reviewerEmail: String
      )
      data class Product(
      val id: Int,
      val title: String,
      val description: String,
      val category: String,
      val price: Float,
      val discountPercentage: Float,
      val rating: Float,
      val stock: Int,
      val tags: List,
      val brand: String,
      val sku: String,
      val weight: Int,
      val dimensions: Dimensions,
      val warrantyInformation: String,
      val shippingInformation: String,
      val availabilityStatus: String,
      val reviews: List,
      val returnPolicy: String,
      val minimumOrderQuantity: Int,
      val meta: Meta,
      val thumbnail: String,
      val images: List
      )

      Ответить

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