catch npe on participants context menu

1 files changed, 5 insertions, 0 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java b/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
index cdd4a00df..8b1980c6c 100644
--- a/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ConferenceDetailsActivity.java
@@ -304,6 +304,11 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
 
     @Override
     public boolean onContextItemSelected(MenuItem item) {
+        final User user = mUserPreviewAdapter.getSelectedUser();
+        if (user == null) {
+            Toast.makeText(this, R.string.unable_to_perform_this_action, Toast.LENGTH_SHORT).show();
+            return true;
+        }
         if (!MucDetailsContextMenuHelper.onContextItemSelected(item, mUserPreviewAdapter.getSelectedUser(), this)) {
             return super.onContextItemSelected(item);
         }