iambaljeet

<?xml version="1.0" encoding="utf-8"?>
<navigation 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:id="@+id/main_nav_graph"
            app:startDestination="@id/oneFragment">

    <fragment android:id="@+id/oneFragment"
              android:name="com.app.kotlinnavigation.OneFragment"
              android:label="fragment_one"

iambaljeet

// Retrofit
implementation 'com.squareup.retrofit2:retrofit:2.6.1'
implementation 'com.squareup.retrofit2:converter-gson:2.6.1'
implementation 'com.squareup.okhttp3:logging-interceptor:4.1.1'

// Kotlin Coroutines
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3'

iambaljeet

interface ApiService {
    companion object {
        val BASE_URL: String = "https://demo.dataverse.org/api/"
    }

    @GET("search")
    suspend fun getResult(
            @Query("q") query: String?): Response<SearchResultModel?>
}

iambaljeet

data class SearchResultModel(
    val `data`: Data?,
    val status: String?
) {
    data class Data(
        val count_in_response: Int?,
        val items: List<Item?>?,
        val q: String?,
        val spelling_alternatives: SpellingAlternatives?,
        val start: Int?,

iambaljeet

object ApiProvider {
    private val retrofit = Retrofit.Builder()
        .baseUrl(ApiService.BASE_URL)
        .client(getHttpClient())
        .addConverterFactory(GsonConverterFactory.create())
        .build()

    private fun getHttpClient(): OkHttpClient {
        val logging = HttpLoggingInterceptor()
        logging.level = HttpLoggingInterceptor.Level.BODY

iambaljeet

object DataRepository {
    var apiService: ApiService? = null
    var searchResultsLiveData: MutableLiveData<GenericDataModel<SearchResultModel>?> = MutableLiveData()

    init {
        apiService =
            ApiProvider.createService(
                ApiService::class.java
            )
    }

iambaljeet

data class GenericDataModel<T>(val isSuccess: Boolean?, val data: T?, val message: String?)

iambaljeet

private fun startSearching(searchQuery: String?) {
        apiJob = CoroutineScope(Dispatchers.IO).launch {
            DataRepository.getSearchResults(searchQuery)

            withContext(Dispatchers.Main) {
                DataRepository.searchResultsLiveData.observe(
                    this@MainActivity,
                    Observer { genericDataModel: GenericDataModel<SearchResultModel>? ->
                        run {
                            if (genericDataModel?.isSuccess == true) {

iambaljeet

searchEditText?.addTextChangedListener(object: TextWatcher {
            override fun afterTextChanged(s: Editable?) {
                resultTextView?.visibility = View.GONE
                progressLoading?.visibility = View.VISIBLE
                apiJob?.cancel()

                startSearching(s.toString())
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {

iambaljeet

private fun startSearching(searchQuery: String?) {
    CoroutineScope(Dispatchers.IO).launch {
        DataRepository.getSearchResults(searchQuery)
        withContext(Dispatchers.Main) {
        }
    }
}