[Android] Do not duplicate callbacks

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Fri Feb 17 15:33:22 2017 +0100| [63ac7b2b2d37d62de49dac58475cebc06ef7cb48] | committer: Geoffrey Métais

Do not duplicate callbacks

> https://code.videolan.org/videolan/vlc-android/commit/63ac7b2b2d37d62de49dac58475cebc06ef7cb48
---

 medialibrary/src/org/videolan/medialibrary/Medialibrary.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/medialibrary/src/org/videolan/medialibrary/Medialibrary.java b/medialibrary/src/org/videolan/medialibrary/Medialibrary.java
index ccb1ad8..7e5deec 100644
--- a/medialibrary/src/org/videolan/medialibrary/Medialibrary.java
+++ b/medialibrary/src/org/videolan/medialibrary/Medialibrary.java
@@ -437,7 +437,8 @@ public class Medialibrary {
 
     public void addDeviceDiscoveryCb(DevicesDiscoveryCb cb) {
         synchronized (devicesDiscoveryCbList) {
-            devicesDiscoveryCbList.add(cb);
+            if (!devicesDiscoveryCbList.contains(cb))
+                devicesDiscoveryCbList.add(cb);
         }
     }
 
@@ -449,7 +450,8 @@ public class Medialibrary {
 
     public void addEntryPointsEventsCb(EntryPointsEventsCb cb) {
         synchronized (entryPointsEventsCbList) {
-            entryPointsEventsCbList.add(cb);
+            if (!entryPointsEventsCbList.contains(cb))
+                entryPointsEventsCbList.add(cb);
         }
     }