Retrofit Get In Kotlin

activity_main_banner.xml

<?xml version="1.0" encoding="utf-8"?>

<layout
    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"
    >

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".BannerMainActivity">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/frameLayout"
        android:name="com.example.kotlintutorial.BannerFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"

        />


</androidx.constraintlayout.widget.ConstraintLayout>
</layout>

ApiClient.kt

package com.example.kotlintutorial


import okhttp3.OkHttpClient
import okhttp3.logging.HttpLoggingInterceptor
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory

class ApiClient {

    val BASE_URL: String = "http://14.142.204.101:9900/"
    var retrofit: Retrofit? = null


    fun getApiClient(): Retrofit? {
        if (retrofit == null) {


            val interceptor = HttpLoggingInterceptor()
            interceptor.level = HttpLoggingInterceptor.Level.BODY
            val builder = OkHttpClient.Builder()
                .addInterceptor(interceptor)
                .addInterceptor { chain ->
                    val request = chain.request().newBuilder()
                        .addHeader("AUTH_TOKEN", "C7jGJZho7/ptHX+vbYGt+A==")
                        .addHeader("Content-Type", "application/json")
                        .addHeader("DEVICE_ID", "dUwTB2fzTjKDdDTdW69lrc")
                        .addHeader("ANDROID_DEVICE_ID", "5b39185c0342d9f9")
                        .addHeader("COUNTRY", "India")
                        .addHeader("CITY", "Noida")
                        .addHeader("LANGUAGE", "EN")
                        .addHeader("ANDROID_DEVICE_ID", "5b39185c0342d9f9")
                        .build()
                    chain.proceed(request)
                }



            retrofit = Retrofit.Builder()
                .baseUrl(BASE_URL)
                .client(builder.build())
                .addConverterFactory(GsonConverterFactory.create())
                .build()
        }
        return retrofit
    }



}

ApiInterface.kt

package com.example.kotlintutorial

import retrofit2.Call
import retrofit2.http.GET


interface ApiInterface {

    @GET("cans/tt/rest/api/sec/v6/Coupons.json/All")
    fun getBanner(): Call<BannerPojo>
}

BannerAdapter.kt

package com.example.kotlintutorial

import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.bumptech.glide.Glide
import com.example.kotlintutorial.databinding.DataItemBinding

class BannerAdapter(var list: ArrayList<CountryBanner>) : RecyclerView.Adapter<BannerAdapter.ViewHolder>() {


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {

        val binding = DataItemBinding.inflate(LayoutInflater.from(parent.context), parent, false)
        return ViewHolder(binding)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        val item = list[position]

        holder.binding.bannerName.text = item.bannerId.toString()

        Glide.with(holder.itemView.context)
            .load(item.bannerImageUrl)
            .into(holder.binding.bannerImage)
    }

    override fun getItemCount(): Int {
        return list.size
    }


    class ViewHolder (val binding: DataItemBinding) : RecyclerView.ViewHolder(binding.root){
    }
}

BannerFragment.kt

package com.example.kotlintutorial

import android.os.Bundle
import android.util.Log
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.LinearLayoutManager
import com.example.kotlintutorial.databinding.FragmentBannerBinding
import retrofit2.Call
import retrofit2.Callback
import retrofit2.Response
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory


class BannerFragment : Fragment() {

    var binding: FragmentBannerBinding? = null
    var arrayList: ArrayList<CountryBanner> = ArrayList()



    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        binding = FragmentBannerBinding.inflate(inflater, container, false)


        getBannerData()
        return binding!!.root
    }

    private fun getBannerData() {

        val apiInterface: ApiInterface = ApiClient().getApiClient()!!.create(ApiInterface::class.java)
        val call = apiInterface.getBanner()
        call.enqueue(object : Callback<BannerPojo> {
            override fun onResponse(call: Call<BannerPojo>, response: Response<BannerPojo>) {
                Log.e("ss", "Success $response")
                val data = response.body()

                arrayList = data?.countryBanner as ArrayList<CountryBanner>
                binding?.recyclerView?.layoutManager = LinearLayoutManager(activity)
                                binding?.recyclerView?.adapter = BannerAdapter(arrayList)
            }

            override fun onFailure(call: Call<BannerPojo>, t: Throwable) {
                Log.e("ss", "fail ${t.message}")
            }

        })

    }
}

BannerMainActivity.kt

package com.example.kotlintutorial

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.databinding.DataBindingUtil
import com.example.kotlintutorial.databinding.ActivityMainBannerBinding

class BannerMainActivity : AppCompatActivity() {

    var binding: ActivityMainBannerBinding? = null



    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
       binding = DataBindingUtil.setContentView(this, R.layout.activity_main_banner)


    }
}

BannerPojo.kt

package com.example.kotlintutorial

import com.google.gson.annotations.SerializedName

data class BannerPojo(
    @SerializedName("applicableCoupons")
    val meraData: Any,
    val brands: Any,
    val cityBanner: List<Any>,
    @SerializedName("countryBanner")
    val countryBanner: List<CountryBanner>,
    val coupons: List<Any>,
    val storeCoupons: Any,
    val viewAllCouponImage: String
)

CountryBanner.kt

package com.example.kotlintutorial

import android.os.Parcelable
import kotlinx.android.parcel.Parcelize

@Parcelize
data class CountryBanner(
    val available: Boolean,
    val bannerId: Int,
    val bannerImageUrl: String,
    val banner_id: Int,
    val id: Int,
    val linkTo: String,
    val linkToUrl: String
):Parcelable

data_item.xml

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

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/banner_image"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:layout_marginTop="10dp"
        android:scaleType="fitXY"
        android:layout_marginHorizontal="10dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        />

    <androidx.appcompat.widget.AppCompatTextView
        android:id="@+id/banner_Name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Name"
        android:textSize="20dp"
        android:textColor="@color/white"
        android:layout_marginVertical="5dp"
        android:layout_marginHorizontal="10dp"
        android:background="#5565F6"
        android:gravity="center_horizontal"
        android:textStyle="bold"
        app:layout_constraintTop_toBottomOf="@+id/banner_image"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        />

</androidx.constraintlayout.widget.ConstraintLayout>

fragment_banner.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".BannerFragment">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />




</FrameLayout>