[Android] Optimize videos grouping

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Wed Mar 21 15:55:27 2018 +0100| [38a374eb3f91a59b265799ee37a10058d7edb4e2] | committer: Geoffrey Métais

Optimize videos grouping

> https://code.videolan.org/videolan/vlc-android/commit/38a374eb3f91a59b265799ee37a10058d7edb4e2
---

 vlc-android/src/org/videolan/vlc/viewmodels/VideosProvider.kt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/vlc-android/src/org/videolan/vlc/viewmodels/VideosProvider.kt b/vlc-android/src/org/videolan/vlc/viewmodels/VideosProvider.kt
index 401b3a030..e2aadb584 100644
--- a/vlc-android/src/org/videolan/vlc/viewmodels/VideosProvider.kt
+++ b/vlc-android/src/org/videolan/vlc/viewmodels/VideosProvider.kt
@@ -55,9 +55,10 @@ class VideosProvider(private val group: String?, private val minGroupLen: Int) :
             val list = medialibrary.getVideos(sort, desc)
             val displayList = mutableListOf<MediaWrapper>()
             if (group !== null) {
+                val loGroup = group.toLowerCase()
                 for (item in list) {
-                    val title = item.title.substring(if (item.title.toLowerCase().startsWith("the")) 4 else 0)
-                    if (title.toLowerCase().startsWith(group.toLowerCase())) displayList.add(item)
+                    val title = item.title.toLowerCase().let { if (it.startsWith("the")) it.substring(4) else it }
+                    if (title.startsWith(loGroup)) displayList.add(item)
                 }
             } else {
                 MediaGroup.group(list, minGroupLen).mapTo(displayList) { it.media }