From 056df13e66bed5849a607f6239498803fa8cb363 Mon Sep 17 00:00:00 2001
From: seven332 <seven332@163.com>
Date: Sun, 10 May 2015 02:27:08 +0800
Subject: [PATCH] Fix SimpleAnimatorListener for RenderNodeAnimator in
 CheckTextView

---
 app/src/main/java/com/hippo/effect/ViewTransition.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/hippo/effect/ViewTransition.java b/app/src/main/java/com/hippo/effect/ViewTransition.java
index b88857f49..271f88c81 100644
--- a/app/src/main/java/com/hippo/effect/ViewTransition.java
+++ b/app/src/main/java/com/hippo/effect/ViewTransition.java
@@ -81,8 +81,12 @@ public class ViewTransition {
                         ViewUtils.setVisibility(v, View.GONE);
                     }
                 }
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                    startAnimationsL(views[oldShownView], views[shownView]);
+                View viewToHide = views[oldShownView];
+                View viewToShow = views[shownView];
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP  &&
+                        viewToHide.isAttachedToWindow() &&
+                        viewToShow.isAttachedToWindow()) {
+                    startAnimationsL(viewToHide, viewToShow);
                 } else {
                     startAnimations(views[oldShownView], views[shownView]);
                 }