het sloopte wel :(((

code/src/Fitbot/app/build.gradle

@@ -30,7 +30,6 @@ android {
 
 dependencies {
 
-    implementation 'com.facebook.shimmer:shimmer:0.5.0'
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:2.0.4'
     implementation 'com.android.support:cardview-v7:28.0.0'

code/src/Fitbot/app/src/main/java/com/example/fitbot/ui/activities/FitnessActivity.java

@@ -34,7 +34,6 @@ import com.example.fitbot.exercise.ExerciseManager;
 import com.example.fitbot.pepper.Pepper;
 import com.example.fitbot.util.NavigationManager;
 import com.example.fitbot.util.processing.InputProcessor;
-import com.facebook.shimmer.ShimmerFrameLayout;
 
 public class FitnessActivity extends RobotActivity implements RobotLifecycleCallbacks {
 
@@ -94,10 +93,6 @@ public class FitnessActivity extends RobotActivity implements RobotLifecycleCall
         progressText = findViewById(R.id.progressText);
         progressCircle.setMax(maxProgress);
 
-        ShimmerFrameLayout shimmerLayout = findViewById(R.id.shimmerFrameLayout);
-        shimmerLayout.startShimmer(); // Start shimmer animation
-
-
         // Set color of loading circle
         ProgressBar loadingCircle = findViewById(R.id.loadingCircle);
         loadingCircle.setIndeterminateTintList(ColorStateList.valueOf(Color.RED));
@@ -166,9 +161,6 @@ public class FitnessActivity extends RobotActivity implements RobotLifecycleCall
                     // exerciseDescriptionTextView.setText(exercise.description);
                     exerciseVideoUrl = exercise.videoUrl;
 
-                    ShimmerFrameLayout shimmerLayout = findViewById(R.id.shimmerFrameLayout);
-                    shimmerLayout.stopShimmer(); // Start shimmer animation
-
                     // Play the video
                     playVideo(videoView, this);
 

code/src/Fitbot/app/src/main/res/layout/activity_fitness.xml

@@ -60,22 +60,17 @@
 
     </LinearLayout>
 
-    <com.facebook.shimmer.ShimmerFrameLayout
-        android:id="@+id/shimmerFrameLayout"
+    <LinearLayout
         android:layout_width="450dp"
         android:layout_height="450dp"
         android:layout_marginTop="20dp"
         android:layout_marginEnd="20dp"
         android:background="@drawable/border_background"
+        android:orientation="vertical"
         android:padding="20dp"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent">
 
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:orientation="vertical">
-
         <TextView
             android:id="@+id/textViewFitnessTitle"
             style="@style/TextStyleTitle"
@@ -133,9 +128,6 @@
 
     </LinearLayout>
 
-    </com.facebook.shimmer.ShimmerFrameLayout>
-
-
     <Button
         android:id="@+id/homeButtonFitness"
         android:layout_width="150dp"

code/src/Fitbot/gradle.properties

@@ -15,5 +15,3 @@ org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
 # resources declared in the library itself and none from the library's dependencies,
 # thereby reducing the size of the R class for that library
 android.nonTransitiveRClass=true
-android.useAndroidX=true
-android.enableJetifier=true