fix(track): broaden MediaStore query to find saved GPX files

RELATIVE_PATH equality matching was returning 0 rows — MediaStore
normalises the path differently across Android versions and devices.
DISPLAY_NAME LIKE nav_%.gpx is unique enough on its own.

Also log path + IS_PENDING per found file to aid future diagnosis.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 17 insertions, 7 deletions

diff --git a/android-app/app/src/main/kotlin/org/terst/nav/track/TrackStorage.kt b/android-app/app/src/main/kotlin/org/terst/nav/track/TrackStorage.kt
index 7e9064c..4147128 100644
--- a/android-app/app/src/main/kotlin/org/terst/nav/track/TrackStorage.kt
+++ b/android-app/app/src/main/kotlin/org/terst/nav/track/TrackStorage.kt
@@ -114,10 +114,16 @@ class TrackStorage(private val context: Context) {
     private fun loadViaMediaStore(): List<List<TrackPoint>> {
         val tracks = mutableListOf<List<TrackPoint>>()
         val uri = MediaStore.Files.getContentUri("external")
-        val projection = arrayOf(MediaStore.Files.FileColumns._ID)
-        val selection = "${MediaStore.Files.FileColumns.RELATIVE_PATH} = ? " +
-                        "AND ${MediaStore.Files.FileColumns.DISPLAY_NAME} LIKE ?"
-        val args = arrayOf("Documents/Nav/", "nav_%.gpx")
+        val projection = arrayOf(
+            MediaStore.Files.FileColumns._ID,
+            MediaStore.Files.FileColumns.RELATIVE_PATH,
+            MediaStore.MediaColumns.IS_PENDING
+        )
+        // Do NOT filter by RELATIVE_PATH — equality matching is fragile across
+        // Android versions and devices (trailing-slash normalisation, volume prefix,
+        // etc.).  The display-name pattern is specific enough on its own.
+        val selection = "${MediaStore.Files.FileColumns.DISPLAY_NAME} LIKE ?"
+        val args = arrayOf("nav_%.gpx")
 
         val cursor = runCatching {
             context.contentResolver.query(uri, projection, selection, args, null)
@@ -126,11 +132,15 @@ class TrackStorage(private val context: Context) {
         }.getOrNull()
         NavLogger.i("track", "loadViaMediaStore: cursor=${cursor?.count ?: "null"} rows")
         cursor?.use { c ->
-            val idCol = c.getColumnIndexOrThrow(MediaStore.Files.FileColumns._ID)
+            val idCol      = c.getColumnIndexOrThrow(MediaStore.Files.FileColumns._ID)
+            val pathCol    = c.getColumnIndex(MediaStore.Files.FileColumns.RELATIVE_PATH)
+            val pendingCol = c.getColumnIndex(MediaStore.MediaColumns.IS_PENDING)
             while (c.moveToNext()) {
-                val id = c.getLong(idCol)
+                val id      = c.getLong(idCol)
+                val path    = if (pathCol >= 0) c.getString(pathCol) else "?"
+                val pending = if (pendingCol >= 0) c.getInt(pendingCol) else -1
                 val fileUri = android.net.Uri.withAppendedPath(uri, id.toString())
-                NavLogger.i("track", "loadViaMediaStore: parsing id=$id uri=$fileUri")
+                NavLogger.i("track", "loadViaMediaStore: id=$id path=$path pending=$pending")
                 runCatching {
                     val stream = context.contentResolver.openInputStream(fileUri)
                     if (stream == null) {