diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10da1cdc43c49b72303537b9f8650741956bb096..8fa308141f8778d67932a5f25728fae790f3d9d7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,4 +3,6 @@
 ohos第一个版本
 
 * 实现了原库基本功能
+* 由于着色器差异，Angle值与原库有差异
+* 在部分真机中，首页滑动seekbar在最右侧上方角标显示不全
 * 与原库调用无差异
\ No newline at end of file
diff --git a/entry/src/main/java/com/scwang/wave/app/FractionAbility.java b/entry/src/main/java/com/scwang/wave/app/FractionAbility.java
index b93787e21d2b723b47ec93c7b22c78a1d51c010c..954cfefa3a37bf425a42fec44ced01c00a876990 100644
--- a/entry/src/main/java/com/scwang/wave/app/FractionAbility.java
+++ b/entry/src/main/java/com/scwang/wave/app/FractionAbility.java
@@ -13,7 +13,6 @@ import ohos.agp.window.service.WindowManager;
 import org.adw.library.widgets.discreteseekbar.DiscreteSeekBar;
 
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 public class FractionAbility extends Ability implements DiscreteSeekBar.OnProgressChangeListener {