diff --git a/README.md b/README.md
index 2fe1ce7444df4a3750ea7d105024a81ca07a5c8e..e948c1d1da136af61ace9536c7c29540a3893c1d 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 - 基线版本： Release v0.8.5
 - 项目移植状态：主功能完成
 - 调用差异：无
-- 开发版本：sdk5，DevEco Studio2.1 beta4
+- 开发版本：sdk5，DevEco Studio 2.1 Release
 
 #### 效果演示
 <img src="img/demo.gif"></img>
diff --git a/app/src/main/java/com/mancj/example/NavAbilitySlice.java b/app/src/main/java/com/mancj/example/NavAbilitySlice.java
index cd67a8acbdc531a789d9914dd1518252f21fd212..532d1ba5cffe4ad222748fe973e113869917285b 100644
--- a/app/src/main/java/com/mancj/example/NavAbilitySlice.java
+++ b/app/src/main/java/com/mancj/example/NavAbilitySlice.java
@@ -204,6 +204,11 @@ public class NavAbilitySlice extends AbilitySlice implements Animator.StateChang
     private PixelMap getPixelMap(int drawableId) {
         InputStream drawableInputStream = null;
         try {
+            /**
+             * drawableInputStream
+             *
+             * @reture pixelMap
+             */
             drawableInputStream = getResourceManager().getResource(drawableId);
             ImageSource.SourceOptions sourceOptions = new ImageSource.SourceOptions();
             sourceOptions.formatHint = "image/png";