diff --git a/entry/src/main/java/com/github/tbouron/shakedetector/example/LogUtils.java b/entry/src/main/java/com/github/tbouron/shakedetector/example/LogUtils.java
index 4f8c162ca2b7554025fd4f5f98f51db113580187..f30d8de4058694eaacd89002ad2aa1961fe2eb37 100644
--- a/entry/src/main/java/com/github/tbouron/shakedetector/example/LogUtils.java
+++ b/entry/src/main/java/com/github/tbouron/shakedetector/example/LogUtils.java
@@ -2,8 +2,8 @@
  * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
- * You may obtain an copy of the License at
-
+ * You may obtain a copy of the License at
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
diff --git a/entry/src/main/java/com/github/tbouron/shakedetector/example/MainAbility.java b/entry/src/main/java/com/github/tbouron/shakedetector/example/MainAbility.java
index 5caf96b90570219c7a498121f4c5770cff82b8a3..c645d89844fd626105621c0e7790140b3a175702 100644
--- a/entry/src/main/java/com/github/tbouron/shakedetector/example/MainAbility.java
+++ b/entry/src/main/java/com/github/tbouron/shakedetector/example/MainAbility.java
@@ -2,8 +2,8 @@
  * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
- * You may obtain an copy of the License at
-
+ * You may obtain a copy of the License at
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
diff --git a/entry/src/main/java/com/github/tbouron/shakedetector/example/MyApplication.java b/entry/src/main/java/com/github/tbouron/shakedetector/example/MyApplication.java
index fb8628ab320160c10529e5dda4697689bf65ffed..a43681bbae36f00fdde0125ee9e8c8002962d256 100644
--- a/entry/src/main/java/com/github/tbouron/shakedetector/example/MyApplication.java
+++ b/entry/src/main/java/com/github/tbouron/shakedetector/example/MyApplication.java
@@ -2,8 +2,8 @@
  * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
- * You may obtain an copy of the License at
-
+ * You may obtain a copy of the License at
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
diff --git a/entry/src/main/java/com/github/tbouron/shakedetector/example/slice/MainAbilitySlice.java b/entry/src/main/java/com/github/tbouron/shakedetector/example/slice/MainAbilitySlice.java
index 54bb7c25a84db0a13970c1d0f0d979112d1a73ff..0b99cbcd1d39c1c437ad8ae080f3721fb9f9fd48 100644
--- a/entry/src/main/java/com/github/tbouron/shakedetector/example/slice/MainAbilitySlice.java
+++ b/entry/src/main/java/com/github/tbouron/shakedetector/example/slice/MainAbilitySlice.java
@@ -2,8 +2,8 @@
  * Copyright (C) 2021 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
- * You may obtain an copy of the License at
-
+ * You may obtain a copy of the License at
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
@@ -210,7 +210,6 @@ public class MainAbilitySlice extends AbilitySlice {
         Display display = DisplayManager.getInstance().getDefaultDisplay(getAbility()).get();
         int width = display.getAttributes().width;
         AnimatorProperty animator = new AnimatorProperty();
-        int widthTo = width / LogUtils.SAN * ERROR;
         animator.moveFromX(width).moveToX(0).alphaFrom(0).alpha(1).setDuration(WUBAI);
         return animator;
     }
diff --git a/library/src/main/java/com/github/tbouron/shakedetector/library/ShakeDetector.java b/library/src/main/java/com/github/tbouron/shakedetector/library/ShakeDetector.java
index 8d738044dcfa055aa336a61ca68ab80ebb42a350..514fef11862ad0b8ca2c3531437a628568c24b58 100644
--- a/library/src/main/java/com/github/tbouron/shakedetector/library/ShakeDetector.java
+++ b/library/src/main/java/com/github/tbouron/shakedetector/library/ShakeDetector.java
@@ -243,7 +243,7 @@ public class ShakeDetector implements ICategoryOrientationDataCallback {
      *
      * @since 2021-03-20
      */
-    public class SensorBundle {
+    public static class SensorBundle {
         /**
          * X轴上的加速度
          */