diff --git a/app/src/main/kotlin/com/xiaocydx/insets/sample/compat/ImeAnimationCompatActivity.kt b/app/src/main/kotlin/com/xiaocydx/insets/sample/compat/ImeAnimationCompatActivity.kt
index 982e237..bb4b751 100644
--- a/app/src/main/kotlin/com/xiaocydx/insets/sample/compat/ImeAnimationCompatActivity.kt
+++ b/app/src/main/kotlin/com/xiaocydx/insets/sample/compat/ImeAnimationCompatActivity.kt
@@ -39,6 +39,19 @@ class ImeAnimationCompatActivity : AppCompatActivity() {
         // 该函数能避免跟window.modifyImeAnimation()的实现产生冲突。
         window.setWindowInsetsAnimationCallbackCompat(
             object : WindowInsetsAnimationCompat.Callback(DISPATCH_MODE_STOP) {
+                override fun onPrepare(animation: WindowInsetsAnimationCompat) {
+                    // 此时未修改animation.durationMillis和animation.interpolator
+                    super.onPrepare(animation)
+                }
+
+                override fun onStart(
+                    animation: WindowInsetsAnimationCompat,
+                    bounds: WindowInsetsAnimationCompat.BoundsCompat
+                ): WindowInsetsAnimationCompat.BoundsCompat {
+                    // 此时已修改animation.durationMillis和animation.interpolator
+                    return super.onStart(animation, bounds)
+                }
+
                 override fun onProgress(
                     insets: WindowInsetsCompat,
                     runningAnimations: MutableList<WindowInsetsAnimationCompat>
diff --git a/insets-compat/src/main/kotlin/com/xiaocydx/insets/compat/InsetsAnimationCompat.kt b/insets-compat/src/main/kotlin/com/xiaocydx/insets/compat/InsetsAnimationCompat.kt
index feafb20..b9d6370 100644
--- a/insets-compat/src/main/kotlin/com/xiaocydx/insets/compat/InsetsAnimationCompat.kt
+++ b/insets-compat/src/main/kotlin/com/xiaocydx/insets/compat/InsetsAnimationCompat.kt
@@ -135,8 +135,7 @@ private class InsetsAnimationCompat private constructor(window: Window) : Window
         insetsCallback!!.typeMask = typeMask
         insetsCallback!!.durationMillis = durationMillis
         insetsCallback!!.interpolator = interpolator
-        // 对视图树的根View（排除ViewRootImpl）decorView设置insetsCallback，
-        // 是为了避免WindowInsetsAnimation.Callback分发的过程产生歧义，例如：
+        // 对decorView设置insetsCallback，是为了避免分发产生歧义：
         // decorView.setWindowInsetsAnimationCallback(callback)
         // childView.setWindowInsetsAnimationCallback(insetsCallback)
         // 1. callback的dispatchMode是DISPATCH_MODE_CONTINUE_ON_SUBTREE。
@@ -220,7 +219,7 @@ private class InsetsAnimationCompat private constructor(window: Window) : Window
  *
  * [onStart]修改第4步的[WindowInsetsAnimation]，[onDraw]修改第6步构建的属性动画。
  *
- * 选择在[onDraw]修改第6步构建的属性动画的原因：
+ * 在[onDraw]修改第6步构建的属性动画的原因：
  * 最初是在[onStart]修改`InsetsController.SYNC_IME_INTERPOLATOR`，使得第6步获取修改结果构建属性动画，
  * 但部分设备的`InsetsController.InternalAnimationControlListener.getInsetsInterpolator()`不会获取
  * 修改结果构建属性动画，导致`durationMillis`修改成功，`interpolator`修改失败。