diff --git a/imagepicker/src/main/java/com/lzy/imagepicker/util/NavigationBarChangeListener.java b/imagepicker/src/main/java/com/lzy/imagepicker/util/NavigationBarChangeListener.java
index 83d6e07..648eb19 100644
--- a/imagepicker/src/main/java/com/lzy/imagepicker/util/NavigationBarChangeListener.java
+++ b/imagepicker/src/main/java/com/lzy/imagepicker/util/NavigationBarChangeListener.java
@@ -5,36 +5,21 @@
 import android.view.View;
 import android.view.ViewTreeObserver;
 
-
 /**
  * Created by z-chu on 2017/9/4
  * 用于监听导航栏的显示和隐藏，主要用于适配华为EMUI系统上虚拟导航栏可随时收起和展开的情况
  */
-
 public class NavigationBarChangeListener implements ViewTreeObserver.OnGlobalLayoutListener {
 
-
-    /**
-     * 监听竖屏模式导航栏的显示和隐藏
-     */
-    public static final int ORIENTATION_VERTICAL = 1;
-
-    /**
-     * 监听横屏模式导航栏的显示和隐藏
-     */
-    public static final int ORIENTATION_HORIZONTAL = 2;
+    public static final int ORIENTATION_VERTICAL = 1;           //监听竖屏模式导航栏的显示和隐藏
+    public static final int ORIENTATION_HORIZONTAL = 2;         //监听横屏模式导航栏的显示和隐藏
 
     private Rect rect;
-
     private View rootView;
-
     private boolean isShowNavigationBar = false;
-
     private int orientation;
-
     private OnSoftInputStateChangeListener listener;
 
-
     public NavigationBarChangeListener(View rootView, int orientation) {
         this.rootView = rootView;
         this.orientation = orientation;
@@ -51,15 +36,13 @@ public void onGlobalLayout() {
         } else if (orientation == ORIENTATION_HORIZONTAL) {
             heightDiff = rootView.getWidth() - (rect.right - rect.left);
         }
-        int navigationBarHeight = Utils.hasVirtualNavigationBar(rootView.getContext()) ?
-                Utils.getNavigationBarHeight(rootView.getContext()) : 0;
+        int navigationBarHeight = Utils.hasVirtualNavigationBar(rootView.getContext()) ? Utils.getNavigationBarHeight(rootView.getContext()) : 0;
         if (heightDiff >= navigationBarHeight && heightDiff < navigationBarHeight * 2) {
             if (!isShowNavigationBar && listener != null) {
                 listener.onNavigationBarShow(orientation, heightDiff);
             }
             isShowNavigationBar = true;
         } else {
-
             if (isShowNavigationBar && listener != null) {
                 listener.onNavigationBarHide(orientation);
             }
@@ -86,9 +69,9 @@ public static NavigationBarChangeListener with(Activity activity) {
     }
 
     public static NavigationBarChangeListener with(View rootView, int orientation) {
-        NavigationBarChangeListener softInputHeightListener = new NavigationBarChangeListener(rootView, orientation);
-        rootView.getViewTreeObserver().addOnGlobalLayoutListener(softInputHeightListener);
-        return softInputHeightListener;
+        NavigationBarChangeListener changeListener = new NavigationBarChangeListener(rootView, orientation);
+        rootView.getViewTreeObserver().addOnGlobalLayoutListener(changeListener);
+        return changeListener;
     }
 
     public static NavigationBarChangeListener with(Activity activity, int orientation) {
diff --git a/imagepicker/src/main/java/com/lzy/imagepicker/util/Utils.java b/imagepicker/src/main/java/com/lzy/imagepicker/util/Utils.java
index c25d777..28581d4 100644
--- a/imagepicker/src/main/java/com/lzy/imagepicker/util/Utils.java
+++ b/imagepicker/src/main/java/com/lzy/imagepicker/util/Utils.java
@@ -65,13 +65,11 @@ public static DisplayMetrics getScreenPix(Activity activity) {
 
     /** dp转px */
     public static int dp2px(Context context, float dpVal) {
-        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
-                dpVal, context.getResources().getDisplayMetrics());
+        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dpVal, context.getResources().getDisplayMetrics());
     }
 
     /**
      * 判断手机是否含有虚拟按键  99%
-     *
      */
     public static boolean hasVirtualNavigationBar(Context context) {
         boolean hasSoftwareKeys = true;
@@ -106,9 +104,6 @@ public static boolean hasVirtualNavigationBar(Context context) {
      */
     public static int getNavigationBarHeight(Context context) {
         int resourceId = context.getResources().getIdentifier("navigation_bar_height", "dimen", "android");
-        return resourceId > 0 ?
-                context.getResources().getDimensionPixelSize(resourceId) :
-                0;
+        return resourceId > 0 ? context.getResources().getDimensionPixelSize(resourceId) : 0;
     }
-
 }