diff --git a/CHANGELOG.md b/CHANGELOG.md
index bdcafbecd49e3738bab583ab42472e1d2784bc56..15c863e36fd1f9f2b11e3a0d43766de84e72a14e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,5 +2,8 @@
 ohos 第一个版本
 
 - 实现了原库的大部分功能 
+- 菜单中的选项点击后切换菜单显示效果差异 因为Ohos本身Fraction不支持Stack
 
-- 菜单中的选项点击后切换菜单显示效果差异 因为Ohos本身Fraction不支持Stack
\ No newline at end of file
+## 0.0.2-SNAPSHOT
+
+- findbugs修改 
\ No newline at end of file
diff --git a/README.OPENSOURCE b/README.OPENSOURCE
index 332c988c5142bc59b3a9446d09d639af8775acac..2e4dd3dc742e25f67b0ea6a7858512fe014d0958 100644
--- a/README.OPENSOURCE
+++ b/README.OPENSOURCE
@@ -3,7 +3,7 @@
         "Name": "Android-MultiBackStack",
         "License": "Apache License",
         "License File": "LICENSE",
-        "Version Number": "1.2.1 ",
+        "Version Number": "1.2.1",
         "Upstream URL": "https://github.com/JetradarMobile/android-multibackstack",
         "Description": "Persistent bottom navigation like in instagram"
     }
diff --git a/README.md b/README.md
index fdaaea39906bea8751460d3b5d99d7d47f45af43..e974a0ee7668e0cc4d0f4f73e6ae5fa4529300e4 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Ohos-MultiBackStack
 - 功能：底部状态栏切换效果
 - 项目移植状态：完成
 - 调用差异：无
-- 开发版本：sdk6，DevEco Studio 2.2 Beta1
+- 开发版本：sdk6，DevEco Studio   2.2 Beta1
 - 基线版本：release 1.2.1
 
 
@@ -31,7 +31,7 @@ allprojects {
 
  ```gradle
  dependencies {
-    implementation('com.gitee.chinasoft_ohos:Ohos_Multibackstack:0.0.1-SNAPSHOT')
+    implementation('com.gitee.chinasoft_ohos:Ohos_Multibackstack:0.0.2-SNAPSHOT')
     ......  
  }
  ```
@@ -121,7 +121,7 @@ CloudTest代码测试无异常
 当前版本demo功能与原组件基本无差异
 
 ## 版本迭代
-- 0.0.1-SNAPSHOT
+- 0.0.2-SNAPSHOT
 
 ## 版权和许可信息
 ````
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/MainAbility.java b/entry/src/main/java/com/jetradar/multibackstack/sample/MainAbility.java
index 0899b0160d322ed007016bfddfb825de8850c39a..f0b808239cba5e98cadbf7b16c36cb903df3e79a 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/MainAbility.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/MainAbility.java
@@ -9,6 +9,10 @@ import ohos.aafwk.content.Intent;
  * @since 2021-06-10
  */
 public class MainAbility extends FractionAbility {
+    /**
+     * onStart
+     * @param intent intent
+     */
     @Override
     public void onStart(Intent intent) {
         super.onStart(intent);
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/MyApplication.java b/entry/src/main/java/com/jetradar/multibackstack/sample/MyApplication.java
index 3de74e7636dfa26752926155da8c9b8dd0268f45..ba588553b46ea56718ad985804fef3965c9d68b8 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/MyApplication.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/MyApplication.java
@@ -7,6 +7,9 @@ import ohos.aafwk.ability.AbilityPackage;
  * @since 2021-06-10
  */
 public class MyApplication extends AbilityPackage {
+    /**
+     * onInitialize
+     */
     @Override
     public void onInitialize() {
         super.onInitialize();
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/FavoritesFraction.java b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/FavoritesFraction.java
index c4e5f7ee25357c645b7ae7da84007ee75ad63821..ce35354109dfab33324c8b26d77095aed4db1d97 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/FavoritesFraction.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/FavoritesFraction.java
@@ -42,12 +42,20 @@ public class FavoritesFraction extends Fraction {
     /**
      * FavoritesFraction
      *
-     * @param context context
+     * @param abilitySlice context
      */
-    public FavoritesFraction(MainAbilitySlice context) {
-        this.context = context;
+    public FavoritesFraction(MainAbilitySlice abilitySlice) {
+        this.context = abilitySlice;
     }
 
+    /**
+     * onComponentAttached
+     *
+     * @param scatter   scatter
+     * @param container container
+     * @param intent    intent
+     * @return Component
+     */
     @Override
     protected Component onComponentAttached(LayoutScatter scatter, ComponentContainer container, Intent intent) {
         Component component = scatter.parse(ResourceTable.Layout_search_fraction, null, false);
@@ -56,6 +64,11 @@ public class FavoritesFraction extends Fraction {
         return component;
     }
 
+    /**
+     * onStart
+     *
+     * @param intent intent
+     */
     @Override
     protected void onStart(Intent intent) {
         super.onStart(intent);
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/ProFileFraction.java b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/ProFileFraction.java
index 6da0dabd5a1b461c6d77006001b353ccdd388d61..5916909c0eb4b5a4e0216816fe4d9b130d091b1f 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/ProFileFraction.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/ProFileFraction.java
@@ -42,12 +42,20 @@ public class ProFileFraction extends Fraction {
     /**
      * MainAbilitySlice
      *
-     * @param context context
+     * @param abilitySlice context
      */
-    public ProFileFraction(MainAbilitySlice context) {
-        this.context = context;
+    public ProFileFraction(MainAbilitySlice abilitySlice) {
+        this.context = abilitySlice;
     }
 
+    /**
+     * onComponentAttached
+     *
+     * @param scatter   scatter
+     * @param container container
+     * @param intent    intent
+     * @return Component
+     */
     @Override
     protected Component onComponentAttached(LayoutScatter scatter, ComponentContainer container, Intent intent) {
         Component component = scatter.parse(ResourceTable.Layout_search_fraction, null, false);
@@ -56,6 +64,11 @@ public class ProFileFraction extends Fraction {
         return component;
     }
 
+    /**
+     * onStart
+     *
+     * @param intent intent
+     */
     @Override
     protected void onStart(Intent intent) {
         super.onStart(intent);
@@ -64,7 +77,7 @@ public class ProFileFraction extends Fraction {
         listContainer.setItemProvider(itemProvider);
         listContainer.setItemClickedListener(new ListContainer.ItemClickedListener() {
             @Override
-            public void onItemClicked(ListContainer listContainer, Component component, int i, long l) {
+            public void onItemClicked(ListContainer container, Component component, int i, long l) {
                 context.addAction(ProFileFraction.this, i);
                 click(i);
             }
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/SearchFraction.java b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/SearchFraction.java
index 889985c1f2da87d79634754240d9cf6b5afe3b28..2eeeecc4592204b7aa4c1301fef2a8cf48174bcb 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/SearchFraction.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/fraction/SearchFraction.java
@@ -34,6 +34,7 @@ import java.util.List;
  * @since 2021-06-10
  */
 public class SearchFraction extends Fraction {
+    private static final int NUM_10 = 10;
     private ListContainer listContainer;
     private ItemProvider itemProvider;
     private MainAbilitySlice context;
@@ -43,12 +44,20 @@ public class SearchFraction extends Fraction {
     /**
      * SearchFraction
      *
-     * @param context context
+     * @param abilitySlice context
      */
-    public SearchFraction(MainAbilitySlice context) {
-        this.context = context;
+    public SearchFraction(MainAbilitySlice abilitySlice) {
+        this.context = abilitySlice;
     }
 
+    /**
+     * onComponentAttached
+     *
+     * @param scatter   scatter
+     * @param container container
+     * @param intent    intent
+     * @return Component
+     */
     @Override
     protected Component onComponentAttached(LayoutScatter scatter, ComponentContainer container, Intent intent) {
         Component component = scatter.parse(ResourceTable.Layout_search_fraction, null, false);
@@ -57,6 +66,11 @@ public class SearchFraction extends Fraction {
         return component;
     }
 
+    /**
+     * onStart
+     *
+     * @param intent intent
+     */
     @Override
     protected void onStart(Intent intent) {
         super.onStart(intent);
@@ -86,11 +100,9 @@ public class SearchFraction extends Fraction {
         text.setVisibility(Component.VISIBLE);
         text.setText(data.get(i));
         text.setTextColor(new Color(Color.getIntColor("#A2A2A2")));
-
     }
 
     private void unClick() {
-
         context.initTitle();
         listContainer.setVisibility(Component.VISIBLE);
         text.setVisibility(Component.HIDE);
@@ -111,8 +123,8 @@ public class SearchFraction extends Fraction {
 
     private List<String> getData() {
         List<String> list = new ArrayList<>();
-        for (int i = 1; i <= 10; i++) {
-            list.add("Search " + i);
+        for (int index = 1; index <= NUM_10; index++) {
+            list.add("Search " + index);
         }
         return list;
     }
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/provider/ItemProvider.java b/entry/src/main/java/com/jetradar/multibackstack/sample/provider/ItemProvider.java
index 36eaa907518ddc96f181b83d407b69930a9c7cb7..38e69458740a7db74d97fce99252f8ed3118e3f5 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/provider/ItemProvider.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/provider/ItemProvider.java
@@ -32,31 +32,56 @@ public class ItemProvider extends BaseItemProvider {
     /**
      * ItemProvider
      *
-     * @param list    list
-     * @param context context
+     * @param stringList    list
+     * @param cont context
      */
-    public ItemProvider(List<String> list, Context context) {
-        this.list = list;
-        this.context = context;
+    public ItemProvider(List<String> stringList, Context cont) {
+        this.list = stringList;
+        this.context = cont;
     }
 
+    /**
+     * getCount
+     *
+     * @return int
+     */
     @Override
     public int getCount() {
         return list.size();
     }
 
+    /**
+     * getItem
+     *
+     * @param index i
+     * @return Object
+     */
     @Override
-    public Object getItem(int i) {
-        return list.get(i);
+    public Object getItem(int index) {
+        return list.get(index);
     }
 
+    /**
+     * getItemId
+     *
+     * @param index index
+     * @return
+     */
     @Override
     public long getItemId(int index) {
         return index;
     }
 
+    /**
+     * getComponent
+     *
+     * @param index              index
+     * @param component          component
+     * @param componentContainer componentContainer
+     * @return Component
+     */
     @Override
-    public Component getComponent(int i, Component component, ComponentContainer componentContainer) {
+    public Component getComponent(int index, Component component, ComponentContainer componentContainer) {
         final Component cpt;
         ViewHolder holder;
         if (component == null) {
@@ -67,7 +92,7 @@ public class ItemProvider extends BaseItemProvider {
             cpt = component;
             holder = (ViewHolder) cpt.getTag();
         }
-        holder.text.setText(list.get(i));
+        holder.text.setText(list.get(index));
         return cpt;
     }
 
@@ -76,8 +101,8 @@ public class ItemProvider extends BaseItemProvider {
      *
      * @since 2021-06-10
      */
-    private class ViewHolder {
-        Text text;
+    static class ViewHolder {
+        private Text text;
 
         /**
          * ViewHolder
@@ -87,5 +112,13 @@ public class ItemProvider extends BaseItemProvider {
         ViewHolder(Component component) {
             text = (Text) component.findComponentById(ResourceTable.Id_item_text);
         }
+
+        public Text getText() {
+            return text;
+        }
+
+        public void setText(Text textname) {
+            this.text = textname;
+        }
     }
 }
diff --git a/entry/src/main/java/com/jetradar/multibackstack/sample/slice/MainAbilitySlice.java b/entry/src/main/java/com/jetradar/multibackstack/sample/slice/MainAbilitySlice.java
index cebc06116f55e59b1941610e4180b653209fa80d..71d92c6a808029b884fba63223f09e478cc91bd3 100644
--- a/entry/src/main/java/com/jetradar/multibackstack/sample/slice/MainAbilitySlice.java
+++ b/entry/src/main/java/com/jetradar/multibackstack/sample/slice/MainAbilitySlice.java
@@ -57,6 +57,11 @@ public class MainAbilitySlice extends BaseAbilitySlice implements Component.Clic
     private Intent intents;
     private int selectInt = 0;
 
+    /**
+     * onStart
+     *
+     * @param intent intent
+     */
     @Override
     protected void onStart(Intent intent) {
         super.onStart(intent);
@@ -92,10 +97,20 @@ public class MainAbilitySlice extends BaseAbilitySlice implements Component.Clic
         profile.setClickedListener(this::onClick);
     }
 
-    public void setSelectInt(int selectInt) {
-        this.selectInt = selectInt;
+    /**
+     * setSelectInt
+     *
+     * @param seleIndex selectInt
+     */
+    public void setSelectInt(int seleIndex) {
+        this.selectInt = seleIndex;
     }
 
+    /**
+     * onClick
+     *
+     * @param component component
+     */
     @Override
     public void onClick(Component component) {
         switch (component.getId()) {
@@ -199,6 +214,9 @@ public class MainAbilitySlice extends BaseAbilitySlice implements Component.Clic
         profile.setScale(1, 1);
     }
 
+    /**
+     * onBackPressed
+     */
     @Override
     protected void onBackPressed() {
         if (list.size() == 1) {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
deleted file mode 100644
index 490fda8577df6c95960ba7077c43220e5bb2c0d9..0000000000000000000000000000000000000000
Binary files a/gradle/wrapper/gradle-wrapper.jar and /dev/null differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
deleted file mode 100644
index f59159e865d4b59feb1b8c44b001f62fc5d58df4..0000000000000000000000000000000000000000
--- a/gradle/wrapper/gradle-wrapper.properties
+++ /dev/null
@@ -1,5 +0,0 @@
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-distributionUrl=https\://repo.huaweicloud.com/gradle/gradle-6.3-bin.zip
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
diff --git a/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java b/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
index 4be1b188b72c0a7d59fbc337e49dbb42309d62c7..13f7ac6ec754fc261e52abbd25787249c1683f63 100644
--- a/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
+++ b/multibackstack/src/main/java/com/jetradar/multibackstack/BaseAbilitySlice.java
@@ -18,6 +18,12 @@ public abstract class BaseAbilitySlice extends AbilitySlice implements CallBack
     private static final int NUM_2 = 2;
     protected List<Object> list = new ArrayList<>();
 
+    /**
+     * addAction
+     *
+     * @param fraction fraction
+     * @param item     item
+     */
     @Override
     public void addAction(Fraction fraction, int item) {
         Action action1 = new Action(fraction, item);
@@ -103,7 +109,7 @@ public abstract class BaseAbilitySlice extends AbilitySlice implements CallBack
      */
     public boolean clear(int hostId) {
         list.clear();
-        if (list == null) {
+        if (list.size() == 0) {
             return false;
         }
         return true;
diff --git a/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java b/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
index a163fb4fe81999656b126ba4b4750314df9b5237..57ca05ed85f711e7d4d9804e56d4ca317c3fa71e 100644
--- a/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
+++ b/multibackstack/src/main/java/com/jetradar/multibackstack/bean/Action.java
@@ -30,22 +30,38 @@ public class Action {
     /**
      * Action
      *
-     * @param fraction fraction
-     * @param item     item
+     * @param fac fraction
+     * @param itemIndex     item
      */
-    public Action(Fraction fraction, int item) {
-        this.fraction = fraction;
-        this.item = item;
+    public Action(Fraction fac, int itemIndex) {
+        this.fraction = fac;
+        this.item = itemIndex;
     }
 
+    /**
+     * getFraction
+     *
+     * @return Fraction
+     */
     public Fraction getFraction() {
         return fraction;
     }
 
+    /**
+     * getItem
+     *
+     * @return int
+     */
     public int getItem() {
         return item;
     }
 
+    /**
+     * equals
+     *
+     * @param obj
+     * @return boolean
+     */
     @Override
     public boolean equals(Object obj) {
         if (this == obj) {
@@ -59,6 +75,11 @@ public class Action {
                 && Objects.equals(fraction, action.fraction);
     }
 
+    /**
+     * hashCode
+     *
+     * @return int
+     */
     @Override
     public int hashCode() {
         return Objects.hash(fraction, item);