Issue#10 Add error message if link cannot be opened

app/src/main/java/org/fnives/tiktokdownloader/ui/main/MainActivity.kt

@@ -9,6 +9,8 @@ import android.view.animation.OvershootInterpolator
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatActivity
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.view.doOnPreDraw
+import androidx.core.view.isVisible
 import com.google.android.material.bottomnavigation.BottomNavigationView
 import com.google.android.material.floatingactionbutton.FloatingActionButton
 import com.google.android.material.snackbar.Snackbar
@@ -114,14 +116,18 @@ class MainActivity : AppCompatActivity() {
         private fun animateFabVisibility(downloadFab: FloatingActionButton, visible: Boolean) {
             val scale = if (visible) 1f else 0f
             val translation = if (visible) 0f else downloadFab.height * 2 / 3f
+            downloadFab.isVisible = true
             downloadFab.clearAnimation()
-            downloadFab.animate()
-                .scaleX(scale)
-                .scaleY(scale)
-                .setDuration(FAB_VISIBILITY_ANIMATION_DURATION)
-                .setInterpolator(fabVisibilityInterpolator)
-                .translationY(translation)
-                .start()
+            downloadFab.doOnPreDraw {
+                downloadFab.animate()
+                    .scaleX(scale)
+                    .scaleY(scale)
+                    .setDuration(FAB_VISIBILITY_ANIMATION_DURATION)
+                    .setInterpolator(fabVisibilityInterpolator)
+                    .translationY(translation)
+                    .withEndAction { downloadFab.isVisible = visible }
+                    .start()
+            }
         }
     }
 }

app/src/main/java/org/fnives/tiktokdownloader/ui/main/queue/QueueFragment.kt

@@ -1,16 +1,19 @@
 package org.fnives.tiktokdownloader.ui.main.queue
 
+import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.view.View
 import android.widget.Button
 import android.widget.EditText
+import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.core.net.toUri
 import androidx.core.widget.doAfterTextChanged
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.snackbar.Snackbar
 import org.fnives.tiktokdownloader.R
 import org.fnives.tiktokdownloader.data.model.VideoState
 import org.fnives.tiktokdownloader.di.provideViewModels
@@ -46,7 +49,12 @@ class QueueFragment : Fragment(R.layout.fragment_queue) {
                     createGalleryIntent(data.uri)
                 null -> return@observe
             }
-            startActivity(intent)
+            try {
+                startActivity(intent)
+            } catch(activityNotFoundException: ActivityNotFoundException) {
+                val anchor = activity?.findViewById<CoordinatorLayout>(R.id.snack_bar_anchor) ?: return@observe
+                Snackbar.make(anchor, R.string.could_not_open, Snackbar.LENGTH_SHORT).show()
+            }
         }
     }
 

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

@@ -46,4 +46,5 @@
     <string name="error_handling">The download may fail for various reasons. In such case on the Queue screen you will see a refresh icon. Pressing that will retry the download.</string>
     <string name="captcha_handling">It\'s possible if you try to download too many videos at the same time <b>captcha</b> will be triggered. Since we don\'t want to overload the server, in such case you will need to wait a couple hours to properly retry the download. If that still doesn\'t work you may need to verify a captcha on the same network.</string>
     <string name="link_to_repository">This is an open source project. You can see the repository clicking <u>here.</u></string>
+    <string name="could_not_open">Couldn\'t open!</string>
 </resources>