[UPDATE] Refined the resource list.

Author: hossain-khan

.idea/assetWizardSettings.xml

@@ -204,7 +204,7 @@ class LayoutDataStore @Inject constructor(
              */
             LayoutInformation(
                     layoutResourceId = R.layout.activity_learning_resource,
-                    thumbnailResourceId = R.drawable.poster_angry_birds,
+                    thumbnailResourceId = R.drawable.ic_book_128dp,
                     title = "Resources",
                     description = "XYZ")
 

app/src/main/java/com/hossainkhan/android/demo/data/LayoutDataStore.kt

@@ -19,8 +19,8 @@ package com.hossainkhan.android.demo.ui.resource
 import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.net.Uri
-import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
@@ -48,6 +48,9 @@ class LearningResourceActivity : AppCompatActivity() {
         binding = DataBindingUtil.setContentView(this, R.layout.activity_learning_resource)
 
         viewModel = ViewModelProvider(this, viewModelFactory).get(LearningResourceViewModel::class.java)
+        binding.lifecycleOwner = this
+        binding.viewModel = viewModel
+
         setupData(binding.recyclerView)
     }
 

app/src/main/java/com/hossainkhan/android/demo/ui/resource/LearningResourceActivity.kt

@@ -16,6 +16,7 @@
 
 package com.hossainkhan.android.demo.ui.resource
 
+import androidx.databinding.ObservableField
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -28,6 +29,8 @@ import javax.inject.Inject
 class LearningResourceViewModel @Inject constructor(
         firestore: FirebaseFirestore
 ) : ViewModel() {
+    val isLoading = ObservableField(true)
+
     private val _data = MutableLiveData<List<ResourceInfo>>()
     val data: LiveData<List<ResourceInfo>> = _data
 
@@ -44,9 +47,12 @@ class LearningResourceViewModel @Inject constructor(
                         Timber.i("Resource: $x")
                         resourceData.add(x)
                     }
+                    isLoading.set(false)
                     _data.value = resourceData
+
                 }
                 .addOnFailureListener { exception ->
+                    isLoading.set(false)
                     Timber.w(exception, "Error getting documents.")
                 }
     }

app/src/main/java/com/hossainkhan/android/demo/ui/resource/LearningResourceViewModel.kt

@@ -0,0 +1,21 @@
+<!--
+  ~ Copyright (c) 2019 Hossain Khan
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<vector android:height="128dp" android:tint="#51ACBB"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="128dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M18,2H6c-1.1,0 -2,0.9 -2,2v16c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zM6,4h5v8l-2.5,-1.5L6,12V4z"/>
+</vector>

app/src/main/res/drawable/ic_book_128dp.xml

@@ -30,8 +30,29 @@
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintRight_toRightOf="parent"
-            tools:listitem="@layout/list_item_resource_tech_talk"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:listitem="@layout/list_item_resource_tech_talk" />
+
+        <ProgressBar
+            android:id="@+id/loading_indicator"
+            style="?android:attr/progressBarStyle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="@{safeUnbox(viewModel.isLoading)? View.VISIBLE : View.GONE}"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.5"
+            app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <data>
+
+        <import type="android.view.View" />
+
+        <variable
+            name="viewModel"
+            type="com.hossainkhan.android.demo.ui.resource.LearningResourceViewModel" />
+    </data>
 </layout>

app/src/main/res/layout/activity_learning_resource.xml

@@ -62,7 +62,7 @@
                 android:layout_height="wrap_content"
                 android:layout_marginTop="@dimen/material_content_distance_small"
                 android:layout_marginBottom="@dimen/material_vertical_margin"
-                android:text="@{data.formattedDate}"
+                android:text="@{@string/tech_talk_publish_date(data.formattedDate)}"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintStart_toStartOf="@+id/guideline_vertical_start"
                 app:layout_constraintTop_toBottomOf="@+id/resource_summary"

app/src/main/res/layout/list_item_resource_tech_talk.xml

@@ -24,5 +24,6 @@
 
     <string name="additional_resource_title">External Resources</string>
     <string name="tech_talk_author_and_venue">by %1$s at %2$s</string>
+    <string name="tech_talk_publish_date">Published on %1$s</string>
 
 </resources>