Small fix

app/src/main/java/xyz/quaver/pupil/MainActivity.kt

@@ -573,7 +573,6 @@ class MainActivity : AppCompatActivity() {
                                             }
 
                                             if (next is LinearLayout) {
-                                                Log.d("Pupil", "hmm...")
                                                 val icon = next.findViewById<ImageView>(R.id.icon_next)
                                                 next.layoutParams.height = 1
                                                 icon.layoutParams.height = 1

app/src/main/java/xyz/quaver/pupil/ReaderActivity.kt

@@ -190,6 +190,7 @@ class ReaderActivity : AppCompatActivity() {
             onNotifyChangedHandler = { notify ->
                 val fab = reader_fab_download
 
+                runOnUiThread {
                     if (notify) {
                         val icon = AnimatedVectorDrawableCompat.create(this, R.drawable.ic_downloading)
                         icon?.registerAnimationCallback(object: Animatable2Compat.AnimationCallback() {
@@ -210,10 +211,13 @@ class ReaderActivity : AppCompatActivity() {
                         fab.setImageDrawable(icon)
                         icon?.start()
                     } else {
+                        runOnUiThread {
                             fab.setImageResource(R.drawable.ic_download)
                         }
                     }
                 }
+            }
+        }
 
         if (downloader.download) {
             downloader.invokeOnReaderLoaded()