[Android] Fix audioplayer crash on pre-lollipop devices

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Mon Nov 12 18:40:04 2018 +0100| [c6d91ee370f852500976d540e831696724d0eff0] | committer: Geoffrey Métais

Fix audioplayer crash on pre-lollipop devices

> https://code.videolan.org/videolan/vlc-android/commit/c6d91ee370f852500976d540e831696724d0eff0
---

 vlc-android/res/drawable-v21/po_seekbar.xml | 26 ++++++++++++++++++++++++++
 vlc-android/res/drawable/po_seekbar.xml     |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/vlc-android/res/drawable-v21/po_seekbar.xml b/vlc-android/res/drawable-v21/po_seekbar.xml
new file mode 100644
index 000000000..3acfa6311
--- /dev/null
+++ b/vlc-android/res/drawable-v21/po_seekbar.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:id="@android:id/background">
+        <shape>
+            <solid android:color="?attr/progress_background" />
+        </shape>
+    </item>
+
+    <item android:id="@android:id/secondaryProgress">
+        <clip>
+            <shape>
+                <solid android:color="@color/grey400transparent" />
+            </shape>
+        </clip>
+    </item>
+
+    <item android:id="@android:id/progress">
+        <clip>
+            <shape>
+                <solid android:color="@color/orange500transparent" />
+            </shape>
+        </clip>
+    </item>
+
+</layer-list>
\ No newline at end of file
diff --git a/vlc-android/res/drawable/po_seekbar.xml b/vlc-android/res/drawable/po_seekbar.xml
index 3acfa6311..40d760470 100644
--- a/vlc-android/res/drawable/po_seekbar.xml
+++ b/vlc-android/res/drawable/po_seekbar.xml
@@ -3,7 +3,7 @@
 
     <item android:id="@android:id/background">
         <shape>
-            <solid android:color="?attr/progress_background" />
+            <solid android:color="@color/grey400transparent" />
         </shape>
     </item>