Fix.

Yuncong Zhang · Yuncong Zhang · commit 4df1a6da1592 · 2019-04-24T16:44:33.000+08:00
diff --git a/Runtime/animation/animation_controller.cs b/Runtime/animation/animation_controller.cs
@@ -205,7 +205,7 @@ public TickerFuture animateTo(float target, TimeSpan? duration = null, Curve cur
             return this._animateToInternal(target, duration: duration, curve: curve);
         }
         
-        TickerFuture animateBack(float target, TimeSpan? duration, Curve curve = null) {
+        public TickerFuture animateBack(float target, TimeSpan? duration, Curve curve = null) {
             D.assert(
                 this._ticker != null,
                 "AnimationController.animateBack() called after AnimationController.dispose()\n" +

Original file line number	Diff line number	Diff line change
`@@ -205,7 +205,7 @@ public TickerFuture animateTo(float target, TimeSpan? duration = null, Curve cur`
`205`	`205`	`return this._animateToInternal(target, duration: duration, curve: curve);`
`206`	`206`	`}`
`207`	`207`
`208`		`- TickerFuture animateBack(float target, TimeSpan? duration, Curve curve = null) {`
	`208`	`+ public TickerFuture animateBack(float target, TimeSpan? duration, Curve curve = null) {`
`209`	`209`	`D.assert(`
`210`	`210`	`this._ticker != null,`
`211`	`211`	`"AnimationController.animateBack() called after AnimationController.dispose()\n" +`