Adding Dummy Data for test

app/src/main/java/com/thanaa/countriesmvvm/view/CountryListAdapter.kt

@@ -1,26 +1,34 @@
 package com.thanaa.countriesmvvm.view
 
+import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
+import com.thanaa.countriesmvvm.R
 import com.thanaa.countriesmvvm.model.Country
+import kotlinx.android.synthetic.main.activity_main.view.*
+import kotlinx.android.synthetic.main.item_country.view.*
 
 class CountryListAdapter(var countries:ArrayList<Country>):RecyclerView.Adapter<CountryListAdapter.CountryViewHolder>() {
 
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CountryViewHolder {
-        TODO("Not yet implemented")
+    fun updateCounties (newCountry:List<Country>){
+        countries.clear()
+        countries.addAll(newCountry)
+        notifyDataSetChanged()
     }
-
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) =
+        CountryViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.item_country,parent,false))
     override fun getItemCount()= countries.size
 
     override fun onBindViewHolder(holder: CountryViewHolder, position: Int) {
         holder.bind(countries[position])
     }
-    class CountryViewHolder(view: View):RecyclerView.ViewHolder(view){
 
-        fun bind (country:Country){
 
+    class CountryViewHolder(view: View):RecyclerView.ViewHolder(view){
+    private val countryName =  view.name
+        fun bind (country:Country){
+            countryName.text = country.countryName
         }
 
     }

app/src/main/java/com/thanaa/countriesmvvm/view/MainActivity.kt

@@ -2,11 +2,58 @@ package com.thanaa.countriesmvvm.view
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import android.view.View
+import android.widget.ListAdapter
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.ViewModelProviders
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.thanaa.countriesmvvm.R
+import com.thanaa.countriesmvvm.viewmodel.ListViewModel
+import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
+   lateinit var viewModel:ListViewModel
+    var countriesAdapter = CountryListAdapter(arrayListOf())
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        viewModel = ViewModelProviders.of(this).get(ListViewModel::class.java)
+        viewModel.refresh()
+
+        countriesList.apply {
+        layoutManager = GridLayoutManager(context,2)
+        adapter = countriesAdapter
+        }
+
+        observeViewModel()
+    }
+
+    private fun observeViewModel() {
+
+       viewModel.countries.observe(this,Observer { countries ->
+           countries?.let {
+               countriesAdapter.updateCounties(it)
+           }
+       })
+
+        viewModel.countryLoadError.observe(this, Observer { isError -> isError?.let {
+            list_error.visibility = if(it) View.VISIBLE else View.GONE
+            } })
+
+        viewModel.loading.observe(this, Observer { isLoading -> isLoading?.let{
+            progressBar.visibility =  if(it) View.VISIBLE else View.GONE
+
+            if(it){
+                list_error.visibility =View.GONE
+                countriesList.visibility = View.GONE
+            }
+        } })
+
+
+    }
     }
-}

app/src/main/java/com/thanaa/countriesmvvm/viewmodel/ListViewModel.kt

@@ -11,12 +11,12 @@ class ListViewModel:ViewModel() {
     val countryLoadError = MutableLiveData<Boolean>()
     val  loading = MutableLiveData<Boolean>()
 
-    fun fetch(){
+    fun refresh(){
         fetchCountries()
     }
 
     private fun fetchCountries(){
-        var mockData:List<Country> = listOf(Country("Saudi"),Country("US"))
+        var mockData:List<Country> = listOf(Country("Saudi"),Country("US"),Country("Germany"))
         countryLoadError.value = false
         loading.value =false
         countries.value = mockData