add loading and error status, with a simple implementation

base/src/main/java/com/hako/base/extensions/ViewExtensions.kt

@@ -5,6 +5,34 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.LayoutRes
 
+fun View.enable() {
+    isEnabled = true
+}
+
+fun View.disable() {
+    isEnabled = false
+}
+
+fun View.visible() {
+    visibility = View.VISIBLE
+}
+
+fun View.invisible() {
+    visibility = View.INVISIBLE
+}
+
+fun View.transparent() {
+    alpha = 0f
+}
+
+fun View.opaque() {
+    alpha = 1f
+}
+
+fun View.gone() {
+    visibility = View.GONE
+}
+
 fun ViewGroup.inflate(@LayoutRes layout: Int, attachToRoot: Boolean = false): View =
     LayoutInflater
         .from(context)

base/src/main/java/com/hako/base/widgets/LoadingOverlay.kt

@@ -0,0 +1,18 @@
+package com.hako.base.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.FrameLayout
+import com.hako.base.R
+import com.hako.base.extensions.inflate
+
+class LoadingOverlay @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr) {
+
+    init {
+        inflate(R.layout.loading_overlay, true)
+    }
+}

base/src/main/java/com/hako/base/widgets/NetworkErrorOverlay.kt

@@ -0,0 +1,18 @@
+package com.hako.base.widgets
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.FrameLayout
+import com.hako.base.R
+import com.hako.base.extensions.inflate
+
+class NetworkErrorOverlay @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : FrameLayout(context, attrs, defStyleAttr) {
+
+    init {
+        inflate(R.layout.network_error_overlay, true)
+    }
+}

base/src/main/res/layout/loading_overlay.xml

@@ -0,0 +1,21 @@
+<?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="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:background="@color/soft_background">
+
+    <com.airbnb.lottie.LottieAnimationView
+        android:id="@+id/loading_overlay_animation_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:scaleType="centerInside"
+        app:lottie_autoPlay="true"
+        app:lottie_loop="true"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:lottie_rawRes="@raw/loading_animation" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

base/src/main/res/layout/network_error_overlay.xml

@@ -0,0 +1,33 @@
+<?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="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:background="@color/soft_background">
+
+    <com.airbnb.lottie.LottieAnimationView
+        android:id="@+id/loading_overlay_animation_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:scaleType="centerInside"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.48"
+        app:lottie_autoPlay="true"
+        app:lottie_loop="true"
+        app:lottie_rawRes="@raw/network_animation" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Network error!"
+        android:textSize="24sp"
+        app:layout_constraintEnd_toEndOf="@+id/loading_overlay_animation_view"
+        app:layout_constraintStart_toStartOf="@+id/loading_overlay_animation_view"
+        app:layout_constraintTop_toBottomOf="@+id/loading_overlay_animation_view" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

userlist/src/main/java/com/hako/userlist/feature/UserlistFragment.kt

@@ -7,8 +7,10 @@ import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.hako.base.domain.network.RequestStatus
+import com.hako.base.extensions.gone
 import com.hako.base.extensions.observeNonNull
 import com.hako.base.extensions.toast
+import com.hako.base.extensions.visible
 import com.hako.userlist.model.UserViewable
 import com.hako.userlist.viewmodel.UserlistViewmodel
 import com.hako.userlist.widget.UserlistAdapter
@@ -40,15 +42,23 @@ class UserlistFragment : Fragment() {
 
         viewModel.requestStatus.observeNonNull(this) {
             when (it) {
-                RequestStatus.Ready -> { context?.toast("Ready") }
+                RequestStatus.Ready -> {
-                RequestStatus.Loading -> { context?.toast("Loading") }
+                    fragment_userlist_error_overlay.gone()
-                RequestStatus.Errored -> { context?.toast("Errored") }
+                    fragment_userlist_loading_overlay.gone()
+                }
+                RequestStatus.Loading -> {
+                    fragment_userlist_error_overlay.gone()
+                    fragment_userlist_loading_overlay.visible()
+                }
+                RequestStatus.Errored -> {
+                    fragment_userlist_error_overlay.visible()
+                    fragment_userlist_loading_overlay.gone()
+                }
             }
         }
     }
 
     private fun handleFetchError(throwable: Throwable) {
-        context?.toast("Could't get data")
         Timber.e(throwable)
     }
 

userlist/src/main/res/layout/fragment_userlist.xml

@@ -15,4 +15,24 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <com.hako.base.widgets.LoadingOverlay
+        android:id="@+id/fragment_userlist_loading_overlay"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <com.hako.base.widgets.NetworkErrorOverlay
+        android:id="@+id/fragment_userlist_error_overlay"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>