diff --git a/library/src/main/java/com/mancj/materialsearchbar/materialripple/MaterialRippleLayout.java b/library/src/main/java/com/mancj/materialsearchbar/materialripple/MaterialRippleLayout.java
index ac630291ca17d51936c22f952ee11e5f5a151993..30d592e4a1c2dfc654a03d331cade4f562369dcc 100644
--- a/library/src/main/java/com/mancj/materialsearchbar/materialripple/MaterialRippleLayout.java
+++ b/library/src/main/java/com/mancj/materialsearchbar/materialripple/MaterialRippleLayout.java
@@ -546,7 +546,7 @@ public class MaterialRippleLayout extends StackLayout implements Component.Touch
     /**
      * 设置透明度
      *
-     * @param alpha
+     * @param alpha 透明度
      */
     public void setDefaultRippleAlpha(float alpha) {
         this.rippleAlpha = alpha;