LoginFragment.kt
import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import com.example.retrofitlesson.databinding.FragmentLoginBinding
import com.example.retrofitlesson.retrofit.AuthRequest
import com.example.retrofitlesson.retrofit.MainApi
import com.squareup.picasso.Picasso
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import okhttp3.OkHttpClient
import okhttp3.logging.HttpLoggingInterceptor
import org.json.JSONObject
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
class LoginFragment : Fragment() {
private lateinit var binding: FragmentLoginBinding
private lateinit var mainApi: MainApi
private val viewModel: LoginViewModel by activityViewModels()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentLoginBinding.inflate(inflater, container, false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
initRetrofit()
binding.apply {
bNext.setOnClickListener {
findNavController().navigate(R.id.action_loginFragment_to_productsFragment)
}
bSignIn.setOnClickListener {
auth(
AuthRequest(
login.text.toString(),
password.text.toString()
)
)
}
}
}
private fun initRetrofit(){
val interceptor = HttpLoggingInterceptor()
interceptor.level = HttpLoggingInterceptor.Level.BODY
val client = OkHttpClient.Builder()
.addInterceptor(interceptor)
.build()
val retrofit = Retrofit.Builder()
.baseUrl("https://dummyjson.com").client(client)
.addConverterFactory(GsonConverterFactory.create()).build()
mainApi = retrofit.create(MainApi::class.java)
}
private fun auth(authRequest: AuthRequest){
CoroutineScope(Dispatchers.IO).launch{
val response = mainApi.auth(authRequest)
val message = response.errorBody()?.string()?.let {
JSONObject(it).getString("message")
}
requireActivity().runOnUiThread {
binding.error.text = message
val user = response.body()
if(user != null){
Picasso.get().load(user.image).into(binding.imageView)
binding.name.text = user.firstName
binding.bNext.visibility = View.VISIBLE
viewModel.token.value = user.token
}
}
}
}
}
fragment_login.xml
<?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=".LoginFragment">
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="--------"
android:textColor="#000000"
android:textSize="20sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView" />
<Button
android:id="@+id/bNext"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginEnd="5dp"
android:text="@string/next"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="@+id/imageView"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="150dp"
android:src="@drawable/ic_launcher_foreground"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/login"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:ems="10"
android:hint="Login"
android:inputType="textPersonName"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/name" />
<EditText
android:id="@+id/password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:ems="10"
android:hint="Password"
android:inputType="textPassword"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/login" />
<Button
android:id="@+id/bSignIn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="sign in"
app:layout_constraintEnd_toEndOf="@+id/password"
app:layout_constraintStart_toStartOf="@+id/password"
app:layout_constraintTop_toBottomOf="@+id/password" />
<TextView
android:id="@+id/error"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#FF0000"
android:visibility="visible"
app:layout_constraintBottom_toTopOf="@+id/imageView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
ProductFragment.kt
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.recyclerview.widget.LinearLayoutManager
import com.example.retrofitlesson.adapter.ProductAdapter
import com.example.retrofitlesson.databinding.FragmentProductsBinding
import com.example.retrofitlesson.retrofit.MainApi
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import okhttp3.OkHttpClient
import okhttp3.logging.HttpLoggingInterceptor
import retrofit2.Retrofit
import retrofit2.converter.gson.GsonConverterFactory
class ProductsFragment : Fragment() {
private lateinit var adapter: ProductAdapter
private lateinit var binding: FragmentProductsBinding
private lateinit var mainApi: MainApi
private val viewModel: LoginViewModel by activityViewModels()
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentProductsBinding.inflate(inflater, container, false)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
initRetrofit()
initRcView()
viewModel.token.observe(viewLifecycleOwner){ token ->
CoroutineScope(Dispatchers.IO).launch {
val list = mainApi.getAllProducts(token)
requireActivity().runOnUiThread {
adapter.submitList(list.products)
}
}
}
}
private fun initRetrofit(){
val interceptor = HttpLoggingInterceptor()
interceptor.level = HttpLoggingInterceptor.Level.BODY
val client = OkHttpClient.Builder()
.addInterceptor(interceptor)
.build()
val retrofit = Retrofit.Builder()
.baseUrl("https://dummyjson.com").client(client)
.addConverterFactory(GsonConverterFactory.create()).build()
mainApi = retrofit.create(MainApi::class.java)
}
private fun initRcView() = with(binding){
adapter = ProductAdapter()
rcView.layoutManager = LinearLayoutManager(context)
rcView.adapter = adapter
}
}
MainApi.kt
import retrofit2.Response
import retrofit2.http.*
interface MainApi {
@GET("auth/products/{id}")
suspend fun getProductById(@Path("id") id: Int): Product
@POST("auth/login")
suspend fun auth(@Body authRequest: AuthRequest): Response<User>
@Headers("Content-Type: application/json")
@GET("auth/products")
suspend fun getAllProducts(@Header("Authorization") token: String): Products
@Headers("Content-Type: application/json")
@GET("auth/products/search")
suspend fun getProductsByNameAuth(@Header("Authorization") token: String,
@Query("q") name: String): Products
}