fix: keep the active search filter after deleting a track

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Fixed search results resetting to the full song list after deleting a track while searching ([#85])
 
 ## [1.8.1] - 2026-02-14
 ### Changed
@@ -115,6 +117,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#47]: https://github.com/FossifyOrg/Music-Player/issues/47
 [#65]: https://github.com/FossifyOrg/Music-Player/issues/65
 [#69]: https://github.com/FossifyOrg/Music-Player/issues/69
+[#85]: https://github.com/FossifyOrg/Music-Player/issues/85
 [#97]: https://github.com/FossifyOrg/Music-Player/issues/97
 [#179]: https://github.com/FossifyOrg/Music-Player/issues/179
 [#206]: https://github.com/FossifyOrg/Music-Player/issues/206

app/src/main/kotlin/org/fossify/musicplayer/fragments/TracksFragment.kt

@@ -23,6 +23,7 @@ import org.fossify.musicplayer.models.sortSafely
 // Artists -> Albums -> Tracks
 class TracksFragment(context: Context, attributeSet: AttributeSet) : MyViewPagerFragment(context, attributeSet) {
     private var tracks = ArrayList<Track>()
+    private var lastSearchQuery = ""
     private val binding by viewBinding(FragmentTracksBinding::bind)
 
     override fun setupFragment(activity: BaseSimpleActivity) {
@@ -70,6 +71,12 @@ class TracksFragment(context: Context, attributeSet: AttributeSet) : MyViewPager
                 } else {
                     (adapter as TracksAdapter).updateItems(tracks)
                 }
+
+                // re-apply the active search filter so it isn't lost after a refresh
+                // (e.g. when deleting a track while searching)
+                if (lastSearchQuery.isNotEmpty()) {
+                    onSearchQueryChanged(lastSearchQuery)
+                }
             }
         }
     }
@@ -79,6 +86,7 @@ class TracksFragment(context: Context, attributeSet: AttributeSet) : MyViewPager
     }
 
     override fun onSearchQueryChanged(text: String) {
+        lastSearchQuery = text
         val normalizedText = text.normalizeString()
         val filtered = ArrayList(
             tracks.filter { track ->
@@ -93,6 +101,7 @@ class TracksFragment(context: Context, attributeSet: AttributeSet) : MyViewPager
     }
 
     override fun onSearchClosed() {
+        lastSearchQuery = ""
         getAdapter()?.updateItems(tracks)
         binding.tracksPlaceholder.beGoneIf(tracks.isNotEmpty())
     }