diff --git a/app/src/main/java/com/tylersuehr/chipexample/slice/MainAbilitySlice.java b/app/src/main/java/com/tylersuehr/chipexample/slice/MainAbilitySlice.java
index 8fbf27109efb58f34ef895e79d0d8c4e39b22e2b..bb87656014f38c16db317bf3b3d6fcc16e8fdd51 100644
--- a/app/src/main/java/com/tylersuehr/chipexample/slice/MainAbilitySlice.java
+++ b/app/src/main/java/com/tylersuehr/chipexample/slice/MainAbilitySlice.java
@@ -202,7 +202,7 @@ public class MainAbilitySlice extends AbilitySlice implements Component.ClickedL
     /**
      * 获取屏幕宽度
      *
-     * @return 屏幕宽度
+     * @return getDisplayWidthInPx
      */
     public static int getDisplayWidthInPx(Context context) {
         Display display = DisplayManager.getInstance().getDefaultDisplay(context).get();
diff --git a/app/src/main/java/com/tylersuehr/chipexample/utils/KeyboardVisibilityEvent.java b/app/src/main/java/com/tylersuehr/chipexample/utils/KeyboardVisibilityEvent.java
index 183088328ceb46ce2ac72206e93827880807056a..38ce6d694e10b504aef987960b611395a6a51922 100644
--- a/app/src/main/java/com/tylersuehr/chipexample/utils/KeyboardVisibilityEvent.java
+++ b/app/src/main/java/com/tylersuehr/chipexample/utils/KeyboardVisibilityEvent.java
@@ -23,6 +23,11 @@ import ohos.agp.utils.Rect;
 import ohos.agp.window.service.DisplayManager;
 import ohos.app.Context;
 
+/**
+ * KeyboardVisibilityEvent
+ *
+ * @since 2021-06-22
+ */
 public class KeyboardVisibilityEvent {
     private static final double KEYBOARD_MIN_HEIGHT_RATIO = 0.15;
     private Component mRootView;
@@ -40,7 +45,8 @@ public class KeyboardVisibilityEvent {
      * Set keyboard visibility change event listener.
      * This automatically remove registered event listener when the Activity is destroyed
      *
-     * @param abilitySlice Activity
+     * @param abilitySlice abilitySlice
+     * @param listener listener
      */
     public void setEventListener(AbilitySlice abilitySlice, KeyboardVisibilityEventListener listener) {
         Unregistrar unregistrar = registerEventListener(abilitySlice, listener);
@@ -60,11 +66,10 @@ public class KeyboardVisibilityEvent {
      * Set keyboard visibility change event listener.
      * This automatically remove registered event listener when the Activity is destroyed
      *
-     * @param abilitySlice Activity
+     * @param abilitySlice abilitySlice
+     * @param listener listener
      */
-    public Unregistrar registerEventListener(
-            AbilitySlice abilitySlice,
-            KeyboardVisibilityEventListener listener) {
+    public Unregistrar registerEventListener(AbilitySlice abilitySlice, KeyboardVisibilityEventListener listener) {
         if (abilitySlice == null) {
             throw new NullPointerException("Parameter:AbilitySlice must not be null");
         }