[Android] Speed up loading of large collections

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Feb 12 15:13:30 2019 +0100| [d003f731b4bdbe73e3e940cfc1d6127551ba076d] | committer: Geoffrey Métais

Speed up loading of large collections

> https://code.videolan.org/videolan/vlc-android/commit/d003f731b4bdbe73e3e940cfc1d6127551ba076d
---

 vlc-android/src/org/videolan/vlc/media/MediaUtils.kt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/vlc-android/src/org/videolan/vlc/media/MediaUtils.kt b/vlc-android/src/org/videolan/vlc/media/MediaUtils.kt
index daf4ee934..e7bed6216 100644
--- a/vlc-android/src/org/videolan/vlc/media/MediaUtils.kt
+++ b/vlc-android/src/org/videolan/vlc/media/MediaUtils.kt
@@ -183,13 +183,15 @@ object MediaUtils : CoroutineScope {
                 in 1..MEDIALIBRARY_PAGE_SIZE -> play(withContext(Dispatchers.IO) { model.getAll().toList() })
                 else -> {
                     var index = 0
+                    val appendList = mutableListOf<MediaWrapper>()
                     while (index < count) {
                         val pageCount = min(MEDIALIBRARY_PAGE_SIZE, count - index)
                         val list = withContext(Dispatchers.IO) { model.getPage(pageCount, index).toList() }
                         if (index == 0) play(list)
-                        else service.append(list)
+                        else appendList.addAll(list)
                         index += pageCount
                     }
+                    service.append(appendList)
                 }
             }
         }