detail: add loading indicator to song detail

Add a loading indicator to the song detail view.

This should make the loading process clearer for some songs that take
longer to load.

CHANGELOG.md

@@ -25,6 +25,7 @@
 - Allowed light/dark theme to be customized on Android 12+
 - All information now scrolls in the playback view
 - A month is now shown for song/album dates when available
+- Added loading indicator to song properties view
 
 #### What's Fixed
 - Fixed issue where the scroll popup would not display correctly in landscape mode [#230]

app/src/main/java/org/oxycblt/auxio/detail/SongDetailDialog.kt

@@ -22,6 +22,7 @@ import android.text.format.Formatter
 import android.view.LayoutInflater
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isGone
+import androidx.core.view.isInvisible
 import androidx.navigation.fragment.findNavController
 import androidx.navigation.fragment.navArgs
 import org.oxycblt.auxio.R
@@ -64,8 +65,10 @@ class SongDetailDialog : ViewBindingDialogFragment<DialogSongDetailBinding>() {
 
         if (song != null) {
             if (song.info != null) {
+                binding.detailLoading.isInvisible = true
+                binding.detailContainer.isInvisible = false
+
                 val context = requireContext()
-                binding.detailContainer.isGone = false
                 binding.detailFileName.setText(song.song.path.name)
                 binding.detailRelativeDir.setText(song.song.path.parent.resolveName(context))
                 binding.detailFormat.setText(song.info.resolvedMimeType.resolveName(context))
@@ -86,7 +89,8 @@ class SongDetailDialog : ViewBindingDialogFragment<DialogSongDetailBinding>() {
                     binding.detailSampleRate.setText(R.string.def_sample_rate)
                 }
             } else {
-                binding.detailContainer.isGone = true
+                binding.detailLoading.isInvisible = false
+                binding.detailContainer.isInvisible = true
             }
         } else {
             findNavController().navigateUp()

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

@@ -10,16 +10,28 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:animateLayoutChanges="true">
+
+            <com.google.android.material.progressindicator.LinearProgressIndicator
+                android:id="@+id/detail_loading"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingStart="@dimen/spacing_large"
+                android:paddingEnd="@dimen/spacing_large"
+                android:layout_gravity="center"
+                android:indeterminate="true"
+                app:indeterminateAnimationType="disjoint" />
+
             <LinearLayout
                 android:id="@+id/detail_container"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:orientation="vertical"
                 android:paddingStart="@dimen/spacing_large"
-            android:paddingEnd="@dimen/spacing_large"
+                android:paddingEnd="@dimen/spacing_large">
-            android:showDividers="middle"
-            android:visibility="gone"
-            tools:visibility="visible">
 
                 <com.google.android.material.textfield.TextInputLayout
                     android:layout_width="match_parent"
@@ -133,6 +145,8 @@
                 </com.google.android.material.textfield.TextInputLayout>
 
             </LinearLayout>
+        </FrameLayout>
+
     </androidx.core.widget.NestedScrollView>