Added network checks and implemented async for fetching random meals

app/src/main/AndroidManifest.xml

@@ -3,6 +3,8 @@
     xmlns:tools="http://schemas.android.com/tools" >
 
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
 
     <application
         android:allowBackup="true"

app/src/main/java/com/example/recipeappiti/core/util/CreateMaterialAlertDialogBuilder.kt

@@ -6,7 +6,6 @@ import com.example.recipeappiti.core.model.remote.Response
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 
 object CreateMaterialAlertDialogBuilder {
-
     fun createMaterialAlertDialogBuilderOkCancel(
         context: Context,
         title: String,
@@ -15,7 +14,6 @@ object CreateMaterialAlertDialogBuilder {
         negativeBtnMsg: String,
         positiveBtnFun: () -> Unit
     ) {
-
         MaterialAlertDialogBuilder(context)
             .setTitle(title)
             .setMessage(message)
@@ -31,7 +29,6 @@ object CreateMaterialAlertDialogBuilder {
             }
             .setCancelable(false)
             .show()
-
     }
 
     fun createMaterialAlertDialogBuilderOk(
@@ -41,7 +38,6 @@ object CreateMaterialAlertDialogBuilder {
         positiveBtnMsg: String,
         positiveBtnFun: () -> Unit
     ) {
-
         MaterialAlertDialogBuilder(context)
             .setTitle(title)
             .setMessage(message)
@@ -53,21 +49,19 @@ object CreateMaterialAlertDialogBuilder {
             }
             .setCancelable(false)
             .show()
-
     }
 
-    fun createFailureResponse(response: Response.Failure, context: Context) {
+    fun createFailureResponse(response: Response.Failure, context: Context, action: (() -> Unit)? = null) {
         when (val failureReason = response.reason) {
             is FailureReason.NoInternet -> {
-
                 createMaterialAlertDialogBuilderOkCancel(
                     context,
                     title = "No Internet Connection",
                     message = "Please check your internet connection and try again.",
                     positiveBtnMsg = "Try again",
                     negativeBtnMsg = "Cancel"
                 ) {
-                    //TODO Optionally, define any action to take after the dialog is dismissed
+                    action?.invoke()
                 }
             }
 
@@ -77,12 +71,11 @@ object CreateMaterialAlertDialogBuilder {
                     context,
                     title = "Unknown Error",
                     message = "An unknown error occurred: $errorMessage",
-                    positiveBtnMsg = "OK"
+                    positiveBtnMsg = "Try again"
                 ) {
-
+                    action?.invoke()
                 }
             }
         }
     }
-
 }

app/src/main/java/com/example/recipeappiti/core/util/SystemChecks.kt

@@ -0,0 +1,14 @@
+package com.example.recipeappiti.core.util
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+
+object SystemChecks {
+    fun isNetworkAvailable(context: Context): Boolean {
+        val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+        val network = connectivityManager.activeNetwork ?: return false
+        val activeNetwork = connectivityManager.getNetworkCapabilities(network) ?: return false
+        return activeNetwork.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+    }
+}

app/src/main/java/com/example/recipeappiti/details/view/RecipeDetailFragment.kt

@@ -29,6 +29,8 @@ import com.example.recipeappiti.core.model.local.source.UserDatabase
 import com.example.recipeappiti.core.model.remote.Meal
 import com.example.recipeappiti.core.model.remote.repository.MealRepositoryImpl
 import com.example.recipeappiti.core.model.remote.source.RemoteGsonDataImpl
+import com.example.recipeappiti.core.util.CreateMaterialAlertDialogBuilder.createMaterialAlertDialogBuilderOk
+import com.example.recipeappiti.core.util.SystemChecks
 import com.example.recipeappiti.core.viewmodel.DataViewModel
 import com.example.recipeappiti.core.viewmodel.DataViewModelFactory
 import com.example.recipeappiti.details.view.adapters.IngredientsRecyclerViewAdapter
@@ -111,8 +113,7 @@ class RecipeDetailFragment : Fragment() {
         super.onViewCreated(view, savedInstanceState)
 
         initViews()
-        initObservers()
-        initListeners()
+        checkConnection()
     }
 
     private fun initViews() {
@@ -143,7 +144,6 @@ class RecipeDetailFragment : Fragment() {
         instructionsText = requireView().findViewById(R.id.instructionsText)
 
         bottomNavigationView.visibility = View.GONE
-
     }
 
     private fun initListeners() {
@@ -165,7 +165,6 @@ class RecipeDetailFragment : Fragment() {
     }
 
     private fun initObservers() {
-
         dataViewModel.itemDetails.observe(viewLifecycleOwner) { id ->
             recipeId = id
             changeFavouriteState(recipeId, false)
@@ -252,6 +251,22 @@ class RecipeDetailFragment : Fragment() {
         youtubePlayerView.initialize(youtubePlayerListener, iFramePlayerOptions)
     }
 
+    private fun checkConnection() {
+        if (!SystemChecks.isNetworkAvailable(requireContext())) {
+            createMaterialAlertDialogBuilderOk(
+                requireContext(),
+                "No Internet Connection",
+                "Please check your internet connection and try again",
+                "Retry",
+            ) {
+                checkConnection()
+            }
+        } else {
+            initObservers()
+            initListeners()
+        }
+    }
+
     override fun onConfigurationChanged(newConfig: Configuration) {
         super.onConfigurationChanged(newConfig)
         if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {

app/src/main/java/com/example/recipeappiti/home/view/adapter/AdapterRVCategories.kt

@@ -11,10 +11,9 @@ import com.example.recipeappiti.R
 import com.example.recipeappiti.core.model.remote.Category
 
 class AdapterRVCategories(
-    private val categories: List<Category>,
+    private var categories: List<Category>,
     private val goToSearch: ((id: String) -> Unit)? = null
-) :
-    RecyclerView.Adapter<AdapterRVCategories.CategoryViewHolder>() {
+) : RecyclerView.Adapter<AdapterRVCategories.CategoryViewHolder>() {
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CategoryViewHolder {
         val view = LayoutInflater.from(parent.context)
@@ -33,15 +32,19 @@ class AdapterRVCategories(
                 .into(imageView)
 
             itemView.setOnClickListener { goToSearch?.let { it(category.strCategory) } }
-
         }
     }
 
     override fun getItemCount(): Int = categories.size
 
+    fun submitList(newCategories: List<Category>) {
+        categories = newCategories
+        notifyDataSetChanged()
+    }
+
     class CategoryViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
         val imageView: ImageView = itemView.findViewById(R.id.item_category_image)
         val textView: TextView = itemView.findViewById(R.id.item_category_title)
-
     }
 }
+

app/src/main/java/com/example/recipeappiti/home/view/adapter/AdapterRVItemMeal.kt

@@ -11,10 +11,9 @@ import com.example.recipeappiti.R
 import com.example.recipeappiti.core.model.remote.Meal
 
 class AdapterRVItemMeal(
-    private val meals: List<Meal>,
+    private var meals: List<Meal>,
     private val goToDetails: ((id: String) -> Unit)? = null
-) :
-    RecyclerView.Adapter<AdapterRVItemMeal.MealViewHolder>() {
+) : RecyclerView.Adapter<AdapterRVItemMeal.MealViewHolder>() {
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MealViewHolder {
         val view = LayoutInflater.from(parent.context)
@@ -25,7 +24,6 @@ class AdapterRVItemMeal(
     override fun onBindViewHolder(holder: MealViewHolder, position: Int) {
         val meal = meals[position]
 
-
         holder.titleView.text = formatDescription(meal.strMeal)
 
         Glide.with(holder.itemView.context)
@@ -34,11 +32,15 @@ class AdapterRVItemMeal(
             .into(holder.imageView)
 
         holder.imageView.setOnClickListener {
-
             goToDetails?.let { it(meal.idMeal) }
-
         }
+    }
 
+    override fun getItemCount(): Int = meals.size
+
+    fun submitList(newMeals: List<Meal>) {
+        meals = newMeals
+        notifyDataSetChanged()
     }
 
     private fun formatDescription(
@@ -53,8 +55,6 @@ class AdapterRVItemMeal(
         }
     }
 
-    override fun getItemCount(): Int = meals.size
-
     class MealViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
         val imageView: ImageView = itemView.findViewById(R.id.item_image)
         val titleView: TextView = itemView.findViewById(R.id.item_title)