Add error messages instead of toasts

app/build.gradle

@@ -66,15 +66,15 @@ dependencies {
      */
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.core:core-ktx:1.3.2'
-    implementation 'androidx.preference:preference:1.1.1'
+    implementation 'androidx.preference:preference-ktx:1.1.1'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    implementation 'androidx.navigation:navigation-fragment:2.3.0'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.1'
-    implementation 'androidx.navigation:navigation-ui:2.3.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.1'
     implementation "androidx.browser:browser:1.2.0"
     implementation 'androidx.recyclerview:recyclerview:1.1.0'
     implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0"
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.0'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.1'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.3.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.1'
     implementation 'androidx.paging:paging-runtime-ktx:2.1.2'
     implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-savedstate:2.2.0'
@@ -83,14 +83,14 @@ dependencies {
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
 
     // Use the most recent version of CameraX
-    def camerax_version = '1.0.0-beta08'
+    def camerax_version = '1.0.0-beta11'
     implementation "androidx.camera:camera-core:${camerax_version}"
     implementation "androidx.camera:camera-camera2:${camerax_version}"
     // CameraX Lifecycle library
     implementation "androidx.camera:camera-lifecycle:$camerax_version"
 
     // CameraX View class
-    implementation 'androidx.camera:camera-view:1.0.0-alpha15'
+    implementation 'androidx.camera:camera-view:1.0.0-alpha18'
 
     def room_version = "2.2.5"
     implementation "androidx.room:room-runtime:$room_version"
@@ -106,13 +106,13 @@ dependencies {
     implementation 'com.google.android.material:material:1.2.1'
 
     //Dagger (dependency injection)
-    implementation 'com.google.dagger:dagger-android:2.28.3'
+    implementation 'com.google.dagger:dagger-android:2.29.1'
-    implementation 'com.google.dagger:dagger-android-support:2.28.3'
+    implementation 'com.google.dagger:dagger-android-support:2.29.1'
     // if you use the support libraries
-    kapt 'com.google.dagger:dagger-android-processor:2.28.3'
+    kapt 'com.google.dagger:dagger-android-processor:2.29.1'
-    kapt 'com.google.dagger:dagger-compiler:2.28.3'
+    kapt 'com.google.dagger:dagger-compiler:2.29.1'
 
-    implementation 'com.squareup.okhttp3:okhttp:4.8.1'
+    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
     implementation 'com.squareup.retrofit2:retrofit:2.9.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
     implementation 'com.squareup.retrofit2:adapter-rxjava2:2.9.0'
@@ -160,9 +160,9 @@ dependencies {
 
     debugImplementation "androidx.fragment:fragment-testing:1.2.5"
 
-    testImplementation 'com.github.tomakehurst:wiremock-jre8:2.27.1'
+    testImplementation 'com.github.tomakehurst:wiremock-jre8:2.27.2'
     testImplementation "com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0"
-    testImplementation 'junit:junit:4.13'
+    testImplementation 'junit:junit:4.13.1'
     testImplementation "androidx.room:room-testing:$room_version"
 
 
@@ -175,7 +175,7 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
     androidTestImplementation 'androidx.test.espresso:espresso-intents:3.3.0'
     androidTestImplementation 'com.android.support.test.espresso:espresso-contrib:3.0.2'
-    androidTestImplementation('com.squareup.okhttp3:mockwebserver:4.8.0')
+    androidTestImplementation('com.squareup.okhttp3:mockwebserver:4.9.0')
 
 }
 

app/src/main/java/com/h/pixeldroid/fragments/CameraFragment.kt

@@ -220,7 +220,7 @@ class CameraFragment : Fragment() {
                 )
 
                 // Attach the viewfinder's surface provider to preview use case
-                preview?.setSurfaceProvider(viewFinder.createSurfaceProvider())
+                preview?.setSurfaceProvider(viewFinder.surfaceProvider)
             } catch (exc: Exception) {
                 Log.e(TAG, "Use case binding failed", exc)
             }

app/src/main/java/com/h/pixeldroid/fragments/SearchDiscoverFragment.kt

@@ -9,28 +9,27 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.*
+import androidx.annotation.StringRes
 import androidx.appcompat.widget.SearchView
-import androidx.core.content.ContextCompat.getSystemService
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-import com.google.android.material.textview.MaterialTextView
 import com.h.pixeldroid.Pixeldroid
 import com.h.pixeldroid.PostActivity
 import com.h.pixeldroid.R
-import com.h.pixeldroid.SearchActivity
 import com.h.pixeldroid.api.PixelfedAPI
 import com.h.pixeldroid.db.AppDatabase
 import com.h.pixeldroid.di.PixelfedAPIHolder
 import com.h.pixeldroid.objects.DiscoverPost
 import com.h.pixeldroid.objects.DiscoverPosts
 import com.h.pixeldroid.objects.Status
-import com.h.pixeldroid.utils.DBUtils
 import com.h.pixeldroid.utils.ImageConverter
+import com.mikepenz.iconics.IconicsColor
 import com.mikepenz.iconics.IconicsDrawable
 import com.mikepenz.iconics.typeface.library.googlematerial.GoogleMaterial
-import com.mikepenz.iconics.utils.padding
+import com.mikepenz.iconics.utils.color
+import com.mikepenz.iconics.utils.colorInt
 import com.mikepenz.iconics.utils.paddingDp
 import com.mikepenz.iconics.utils.sizeDp
 import kotlinx.android.synthetic.main.fragment_search.*
@@ -85,6 +84,7 @@ class SearchDiscoverFragment : Fragment() {
         discoverText.setCompoundDrawables(IconicsDrawable(requireContext(), GoogleMaterial.Icon.gmd_explore).apply {
             sizeDp = 24
             paddingDp = 20
+            color = IconicsColor.colorRes(R.color.colorDrawing)
         }, null, null, null)
 
         return view
@@ -107,12 +107,24 @@ class SearchDiscoverFragment : Fragment() {
         }
     }
 
+    fun showError(@StringRes errorText: Int = R.string.loading_toast, show: Boolean = true){
+        if(show){
+            motionLayout.transitionToEnd()
+        } else {
+            motionLayout.transitionToStart()
+        }
+        discoverRefreshLayout.isRefreshing = false
+        discoverProgressBar.visibility = View.GONE
+    }
+
+
     private fun getDiscover() {
 
         api.discover("Bearer $accessToken")
             .enqueue(object : Callback<DiscoverPosts> {
 
                 override fun onFailure(call: Call<DiscoverPosts>, t: Throwable) {
+                    showError()
                     Log.e("SearchDiscoverFragment:", t.toString())
                 }
 
@@ -120,8 +132,10 @@ class SearchDiscoverFragment : Fragment() {
                     if(response.code() == 200) {
                         val discoverPosts = response.body()!!
                         adapter.addPosts(discoverPosts.posts)
-                        discoverProgressBar.visibility = View.GONE
+                        showError(show = false)
-                        discoverRefreshLayout.isRefreshing = false
+                    }
+                    else {
+                        showError()
                     }
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/AccountListFragment.kt

@@ -72,6 +72,8 @@ open class AccountListFragment : FeedFragment() {
             })
 
         swipeRefreshLayout.setOnRefreshListener {
+            showError(show = false)
+
             //by invalidating data, loadInitial will be called again
             factory.liveData.value!!.invalidate()
         }
@@ -135,14 +137,14 @@ open class AccountListFragment : FeedFragment() {
                         val data = response.body()!!
                         callback.onResult(data)
                     } else{
-                        Toast.makeText(context, getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<List<Account>>, t: Throwable) {
-                    Toast.makeText(context, getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("AccountListFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/FeedFragment.kt

@@ -1,11 +1,14 @@
-package com.h.pixeldroid.fragments.feeds
+ package com.h.pixeldroid.fragments.feeds
 
 import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
+import android.view.View.GONE
+import android.view.View.VISIBLE
 import android.view.ViewGroup
 import android.widget.ProgressBar
+import androidx.annotation.StringRes
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.MutableLiveData
 import androidx.paging.DataSource
@@ -22,6 +25,7 @@ import com.h.pixeldroid.db.AppDatabase
 import com.h.pixeldroid.db.UserDatabaseEntity
 import com.h.pixeldroid.di.PixelfedAPIHolder
 import com.h.pixeldroid.objects.FeedContent
+import kotlinx.android.synthetic.main.fragment_feed.*
 import kotlinx.android.synthetic.main.fragment_feed.view.*
 import retrofit2.Call
 import javax.inject.Inject
@@ -65,6 +69,16 @@ open class FeedFragment: Fragment() {
         return view
     }
 
+    fun showError(@StringRes errorText: Int = R.string.loading_toast, show: Boolean = true){
+        if(show){
+            errorLayout.visibility = VISIBLE
+            progressBar.visibility = GONE
+        } else {
+            errorLayout.visibility = GONE
+            progressBar.visibility = VISIBLE
+        }
+    }
+
     open inner class FeedDataSourceFactory<ObjectId, APIObject: FeedContent>(
         private val dataSource: FeedDataSource<ObjectId, APIObject>
     ): DataSource.Factory<ObjectId, APIObject>() {

app/src/main/java/com/h/pixeldroid/fragments/feeds/NotificationsFragment.kt

@@ -10,7 +10,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.TextView
-import android.widget.Toast
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.paging.LivePagedListBuilder
@@ -86,6 +85,8 @@ class NotificationsFragment : FeedFragment() {
             })
 
         swipeRefreshLayout.setOnRefreshListener {
+            showError(show = false)
+
             //by invalidating data, loadInitial will be called again
             factory.liveData.value!!.invalidate()
         }
@@ -125,15 +126,15 @@ class NotificationsFragment : FeedFragment() {
                     if (response.isSuccessful && response.body() != null) {
                         val data = response.body()!!
                         callback.onResult(data)
-                    } else{
+                    } else {
-                        Toast.makeText(context, getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<List<Notification>>, t: Throwable) {
-                    Toast.makeText(context, getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("NotificationsFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/postFeeds/HomeTimelineFragment.kt

@@ -53,15 +53,15 @@ class HomeTimelineFragment: PostsFeedFragment() {
                         val notifications = response.body()!!
                         callback.onResult(notifications)
                         DBUtils.storePosts(db, notifications, user!!)
-                    } else{
+                    } else {
-                        Toast.makeText(context, getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<List<Status>>, t: Throwable) {
-                    Toast.makeText(context, getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("PostsFeedFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/postFeeds/PostsFeedFragment.kt

@@ -68,6 +68,8 @@ abstract class PostsFeedFragment : FeedFragment() {
             })
 
         swipeRefreshLayout.setOnRefreshListener {
+            showError(show = false)
+
             //by invalidating data, loadInitial will be called again
             factory.liveData.value!!.invalidate()
         }

app/src/main/java/com/h/pixeldroid/fragments/feeds/postFeeds/PublicTimelineFragment.kt

@@ -34,14 +34,14 @@ class PublicTimelineFragment: PostsFeedFragment() {
                         val notifications = response.body()!!
                         callback.onResult(notifications)
                     } else{
-                        Toast.makeText(context, getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<List<Status>>, t: Throwable) {
-                    Toast.makeText(context, getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("PublicTimelineFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/search/SearchAccountFragment.kt

@@ -77,14 +77,14 @@ class SearchAccountFragment: AccountListFragment(){
                         callback.onResult(notifications as List<Account>)
 
                     } else{
-                        Toast.makeText(context, getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<Results>, t: Throwable) {
-                    Toast.makeText(context,getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("FeedFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/search/SearchHashtagFragment.kt

@@ -59,6 +59,8 @@ class SearchHashtagFragment: FeedFragment(){
             })
 
         swipeRefreshLayout.setOnRefreshListener {
+            showError(show = false)
+
             //by invalidating data, loadInitial will be called again
             factory.liveData.value!!.invalidate()
         }
@@ -107,14 +109,14 @@ class SearchHashtagFragment: FeedFragment(){
                         callback.onResult(notifications as List<Tag>)
 
                     } else{
-                        Toast.makeText(context,getString(R.string.loading_toast), Toast.LENGTH_SHORT).show()
+                        showError()
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<Results>, t: Throwable) {
-                    Toast.makeText(context,getString(R.string.feed_failed), Toast.LENGTH_SHORT).show()
+                    showError(errorText = R.string.feed_failed)
                     Log.e("FeedFragment", t.toString())
                 }
             })

app/src/main/java/com/h/pixeldroid/fragments/feeds/search/SearchPostsFragment.kt

@@ -8,6 +8,7 @@ import android.view.ViewGroup
 import androidx.lifecycle.LiveData
 import androidx.paging.LivePagedListBuilder
 import androidx.paging.PagedList
+import com.h.pixeldroid.R
 import com.h.pixeldroid.fragments.feeds.FeedFragment
 import com.h.pixeldroid.fragments.feeds.postFeeds.PostsFeedFragment
 import com.h.pixeldroid.objects.Results
@@ -68,15 +69,15 @@ class SearchPostsFragment: PostsFeedFragment(){
                     if (response.code() == 200) {
                         val notifications = response.body()!!.statuses as ArrayList<Status>
                         callback.onResult(notifications as List<Status>)
-
+                    } else {
-                    } else{
+                        showError()
-                        Log.e("FeedFragment", "got response code ${response.code()}")
                     }
                     swipeRefreshLayout.isRefreshing = false
                     loadingIndicator.visibility = View.GONE
                 }
 
                 override fun onFailure(call: Call<Results>, t: Throwable) {
+                    showError(errorText = R.string.feed_failed)
                     Log.e("FeedFragment", t.toString())
                 }
             })

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

@@ -0,0 +1,81 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="64dp"
+    android:height="80dp"
+    android:viewportWidth="64"
+    android:viewportHeight="80">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M42,54H40c0,-5.646 -7.311,-14 -23,-14V38C34.242,38 42,47.356 42,54Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M21.0394,38.7261l1.9971,-7.0007l1.9242,0.5489l-1.9971,7.0007z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M32,24a2.025,2.025 0,0 1,-1.568 -0.721l-1,-1.2a1.818,1.818 0,0 1,-0.26 -1.954A1.984,1.984 0,0 1,31 19h2a1.984,1.984 0,0 1,1.827 1.127,1.818 1.818,0 0,1 -0.259,1.953l-1,1.2A2.026,2.026 0,0 1,32 24ZM31.132,21 L31.968,22 32.905,20.943Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M37.394,20a1.376,1.376 0,0 1,-1 -0.4c-0.669,-0.669 -0.48,-1.829 0.448,-2.756s2.087,-1.117 2.756,-0.448 0.48,1.829 -0.448,2.756A2.589,2.589 0,0 1,37.394 20Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M26.606,20a2.589,2.589 0,0 1,-1.76 -0.846c-0.928,-0.927 -1.117,-2.087 -0.448,-2.756s1.828,-0.481 2.756,0.448 1.117,2.087 0.448,2.756A1.376,1.376 0,0 1,26.606 20Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M50.707,15.707l-1.414,-1.414c2,-2 2.595,-8.817 2.691,-12.293H50c-7.287,0 -9.3,1.71 -9.314,1.728a1.039,1.039 0,0 1,-1.031 0.21A19.494,19.494 0,0 0,33 3H31V1h2a22.413,22.413 0,0 1,6.834 0.886C40.9,1.216 43.713,0 50,0h3a1,1 0,0 1,1 1C54,2.168 53.907,12.507 50.707,15.707Z"/>
+  <path
+      android:fillColor="#FF000000"
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+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M13.293,15.707C10.093,12.507 10,2.168 10,1a1,1 0,0 1,1 -1h3c6.287,0 9.1,1.216 10.166,1.886A22.413,22.413 0,0 1,31 1V3a19.494,19.494 0,0 0,-6.655 0.938,0.992 0.992,0 0,1 -1.052,-0.231h0S21.281,2 14,2H12.016c0.1,3.476 0.689,10.291 2.691,12.293Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M30,34C10.313,34 9.048,22.577 9,22.091A1,1 0,0 1,10 21c0.147,0 0.289,-0.007 0.422,-0.019a10.9,10.9 0,0 1,-2.254 -2.426A1,1 0,0 1,9 17c2.009,0 4.556,-3.238 6.8,-6.1l0.169,-0.215c-0.3,-1.814 -2.913,-6.216 -5.679,-8.982L11.707,0.293C14.617,3.2 18,8.514 18,11a1,1 0,0 1,-0.215 0.619l-0.41,0.521c-2.209,2.809 -4.319,5.494 -6.593,6.471A3.824,3.824 0,0 0,13 20a1,1 0,0 1,0.707 1.707,4.908 4.908,0 0,1 -2.5,1.184C11.979,25.438 15.377,32 30,32Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M40,64H14C4.972,64 0,59.383 0,51c0,-7.411 7.309,-13 17,-13v2C8.448,40 2,44.729 2,51c0,9.092 6.525,11 12,11H40c4.087,0 10,-2.493 10,-7V53c0,-1.638 -0.424,-2.351 -1.469,-3.949a0.8,0.8 0,0 1,-0.054 -0.095l-8.369,-16.5 1.784,-0.9L50.235,48A7.987,7.987 0,0 1,52 53v2C52,60.872 45.031,64 40,64Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M17.99,11.109A0.518,0.518 0,0 0,18 11H16c0,-1.488 5.386,-9 8,-9V4C22.744,4.113 18.309,9.836 17.99,11.109Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M46.01,11.109c-0.319,-1.273 -4.754,-7 -6.017,-7.109L40,2c2.614,0 8,7.512 8,9H46A0.518,0.518 0,0 0,46.01 11.109Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M32,34c-3.5,0 -10,0 -10,-6 0,-3.406 4.336,-7.849 8.754,-8.97l0.492,1.94C27.514,21.916 24,25.732 24,28c0,3.7 3.623,4 8,4s8,-0.3 8,-4c0,-2.265 -3.514,-6.081 -7.247,-7.031l0.494,-1.938C37.664,20.155 42,24.6 42,28 42,34 35.495,34 32,34Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M37,16a2.754,2.754 0,0 1,-3 -2.5A2.754,2.754 0,0 1,37 11a2.754,2.754 0,0 1,3 2.5A2.754,2.754 0,0 1,37 16ZM37,13c-0.62,0 -1,0.323 -1,0.5s0.38,0.5 1,0.5 1,-0.323 1,-0.5S37.62,13 37,13Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M27,16a2.754,2.754 0,0 1,-3 -2.5A2.754,2.754 0,0 1,27 11a2.754,2.754 0,0 1,3 2.5A2.754,2.754 0,0 1,27 16ZM27,13c-0.62,0 -1,0.323 -1,0.5s0.38,0.5 1,0.5 1,-0.323 1,-0.5S27.62,13 27,13Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M42.956,30a1,1 0,0 1,-0.875 -1.485c0.789,-1.421 1.11,-2.244 0.932,-3.357 -0.1,-0.632 -0.306,-1.075 -0.547,-1.187a2.132,2.132 0,0 1,-0.819 -0.721,3.262 3.262,0 0,1 -0.476,-2.984c0.354,-1.034 1.3,-2.266 3.8,-2.266C47.683,18 49,19.517 49,22.637 49,26.6 45.677,30 42.956,30ZM44.974,20c-1.6,0 -1.818,0.642 -1.912,0.916a1.263,1.263 0,0 0,0.2 1.153,0.654 0.654,0 0,0 0.1,0.121 3.237,3.237 0,0 1,1.623 2.653,5.327 5.327,0 0,1 -0.109,2.264A6.114,6.114 0,0 0,47 22.637C47,20.184 46.2,20 44.974,20Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M21.044,30C18.323,30 15,26.6 15,22.637 15,19.517 16.317,18 19.026,18c2.5,0 3.449,1.232 3.8,2.266a3.265,3.265 0,0 1,-0.478 2.987,2.135 2.135,0 0,1 -0.823,0.721c-0.235,0.109 -0.44,0.552 -0.541,1.183 -0.178,1.114 0.143,1.937 0.932,3.358A1,1 0,0 1,21.044 30ZM19.026,20C17.8,20 17,20.184 17,22.637a6.114,6.114 0,0 0,2.122 4.47,5.332 5.332,0 0,1 -0.109,-2.265 3.285,3.285 0,0 1,1.652 -2.672s0.026,-0.036 0.07,-0.1a1.265,1.265 0,0 0,0.2 -1.156C20.844,20.642 20.623,20 19.026,20Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M31,23h2v2h-2z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M34.445,27.832 L32,26.2l-2.445,1.63 -1.11,-1.664 3,-2a1,1 0,0 1,1.11 0l3,2Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M14,64c-4.363,0 -9,-4.557 -9,-13 0,-5.508 2.054,-10 5.494,-12.009l1.01,1.727C8.684,42.366 7,46.21 7,51c0,6.886 3.56,11 7,11Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M22,64c-4.363,0 -9,-4.557 -9,-13s4.637,-13 9,-13v2c-3.44,0 -7,4.114 -7,11s3.56,11 7,11Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M29,64c-4.363,0 -9,-4.557 -9,-13 0,-5.508 2.054,-10 5.494,-12.009l1.01,1.727C23.684,42.366 22,46.21 22,51c0,6.886 3.56,11 7,11Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M37,64c-4.363,0 -9,-4.557 -9,-13 0,-4.888 1.539,-7.923 2.83,-9.608l1.588,1.216C31.314,44.048 30,46.673 30,51c0,6.886 3.56,11 7,11Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M45,63c-4.479,0 -9,-5.257 -9,-17h2c0,9.848 3.521,15 7,15Z"/>
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M37,36h2v11h-2z"/>
+</vector>

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

@@ -1,22 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout 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/coordinatorLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
     <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:id="@+id/swipeRefreshLayout"
-        android:layout_width="match_parent"
+        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">
 
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/list"
-            android:layout_width="match_parent"
+            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
+            android:layout_height="wrap_content"
-            android:layout_marginLeft="16dp"
+            app:layoutManager="LinearLayoutManager" />
-            android:layout_marginRight="16dp"
-            app:layoutManager="LinearLayoutManager"/>
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
@@ -24,5 +24,52 @@
         android:id="@+id/progressBar"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_gravity="center" />
+        app:layout_constraintBottom_toBottomOf="parent"
-</androidx.coordinatorlayout.widget.CoordinatorLayout>
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/errorLayout"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:visibility="visible">
+
+        <ImageView
+            android:id="@+id/imageView4"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:tint="@color/colorDrawing"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:srcCompat="@drawable/red_panda" />
+
+        <TextView
+            android:id="@+id/textView3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Something went wrong..."
+            android:textStyle="bold"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/imageView4" />
+
+        <TextView
+            android:id="@+id/textView4"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="This panda is not happy. Pull to refresh to try again."
+            android:textStyle="italic"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/textView3" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -40,24 +40,71 @@
         <androidx.core.widget.NestedScrollView
             android:layout_width="match_parent"
             android:layout_height="match_parent">
-            <LinearLayout
+
+            <androidx.constraintlayout.motion.widget.MotionLayout
+                android:id="@+id/motionLayout"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                android:orientation="vertical">
+                app:layoutDescription="@xml/fragment_search_xml_error_scene"
+                app:layout_constraintBottom_toTopOf="@+id/discoverList"
+                app:layout_constraintTop_toTopOf="@+id/discoverList">
+
+                <androidx.constraintlayout.widget.ConstraintLayout
+                    android:id="@+id/discoverErrorLayout"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content">
+
+                    <ImageView
+                        android:id="@+id/imageView4"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        app:layout_constraintEnd_toEndOf="parent"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toTopOf="parent"
+                        app:srcCompat="@drawable/red_panda"
+                        app:tint="@color/colorDrawing" />
+
+                    <TextView
+                        android:id="@+id/textView3"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="Something went wrong..."
+                        android:textStyle="bold"
+                        app:layout_constraintEnd_toEndOf="parent"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toBottomOf="@+id/imageView4" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="This panda is not happy. Pull to refresh to try again."
+                        android:textStyle="italic"
+                        app:layout_constraintEnd_toEndOf="parent"
+                        app:layout_constraintStart_toStartOf="parent"
+                        app:layout_constraintTop_toBottomOf="@+id/textView3" />
+
+                </androidx.constraintlayout.widget.ConstraintLayout>
+
                 <TextView
                     android:id="@+id/discoverText"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:gravity="center_vertical"
                     android:text="@string/discover"
-                    android:layout_gravity="center_horizontal"/>
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/discoverErrorLayout" />
+
                 <androidx.recyclerview.widget.RecyclerView
                     android:id="@+id/discoverList"
-                    android:layout_width="match_parent"
+                    android:layout_width="0dp"
                     android:layout_height="wrap_content"
-                    android:nestedScrollingEnabled="false"/>
+                    android:nestedScrollingEnabled="false"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@+id/discoverText" />
 
-            </LinearLayout>
+            </androidx.constraintlayout.motion.widget.MotionLayout>
         </androidx.core.widget.NestedScrollView>
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 

app/src/main/res/values-night/colors.xml

@@ -2,15 +2,8 @@
 <resources>
     <color name="colorPrimary">#FFFFFF</color>
     <color name="colorPrimaryTab">#6200EE</color>
-    <color name="colorPrimaryActionBar">#6200EE</color>
-    <color name="colorPrimaryDark">#3700B3</color>
-    <color name="colorAccent">#03DAC5</color>
-    <color name="colorButtonBg">#6200EE</color>
-    <color name="colorButtonText">#FFFFFF</color>
 
-    <color name="filterLabelNormal">#8A8889</color>
-    <color name="filterLabelSelected">#221F20</color>
-    <color name="colorPrimaryError">#FF0000</color>
     <color name="colorText">#000000</color>
+    <color name="colorDrawing">#FFFFFF</color>
 
 </resources>

app/src/main/res/values/colors.xml

@@ -14,4 +14,5 @@
     <color name="filterLabelSelected">#221F20</color>
     <color name="colorPrimaryError">#FF0000</color>
     <color name="colorText">#FFFFFF</color>
+    <color name="colorDrawing">#000000</color>
 </resources>

app/src/main/res/xml/fragment_search_xml_error_scene.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<MotionScene
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <Transition
+        android:id="@+id/transition"
+        app:constraintSetEnd="@+id/end"
+        app:constraintSetStart="@id/start"
+        app:duration="500">
+
+    </Transition>
+
+    <ConstraintSet android:id="@+id/start">
+        <Constraint
+            android:id="@+id/discoverErrorLayout"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="invisible"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintBottom_toTopOf="parent" />
+    </ConstraintSet>
+
+    <ConstraintSet android:id="@+id/end">
+        <Constraint
+            android:id="@+id/discoverErrorLayout"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+    </ConstraintSet>
+</MotionScene>

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.0'
+    ext.kotlin_version = '1.4.10'
     repositories {
         google()
         jcenter()