commit d786c5ca78094c7b6aaa57423d6369c88ea7f03f
author Taeho Kim <jyte82@gmail.com> Tue Mar 01 10:48:45 2016 +0900
committer Taeho Kim <jyte82@gmail.com> Tue Mar 01 10:48:45 2016 +0900
tree 5021cdd645ceab404db5f3084866ab217a9491f8
parent 6c4f439acf89013267ba3c8968f6fda9da45c627

Fix NPE when calling setState() before onLayoutChild()

Fixed NPE when setState(int) is called before the layout process
was not done(before onLayoutChild() call) for the view that holds
the BottomSheetsBehavior as a CoordinatorLayout.Behavior.

Change-Id: Ic25c6df846920cb2407e9b3398bbf30a7ce29bfd
Signed-off-by: Taeho Kim <jyte82@gmail.com>

design/src/android/support/design/widget/BottomSheetBehavior.java

diff --git a/design/src/android/support/design/widget/BottomSheetBehavior.java b/design/src/android/support/design/widget/BottomSheetBehavior.java
index cd24414..db5e037 100644
--- a/design/src/android/support/design/widget/BottomSheetBehavior.java
+++ b/design/src/android/support/design/widget/BottomSheetBehavior.java
@@ -255,6 +255,9 @@
      * @param state Either {@link #STATE_COLLAPSED} or {@link #STATE_EXPANDED}.
      */
     public final void setState(@State int state) {
+        if (mViewRef == null) {
+            return;
+        }
         V child = mViewRef.get();
         if (child == null) {
             return;