diff --git a/common/src/main/java/com/yunbao/common/activity/AbsActivity.java b/common/src/main/java/com/yunbao/common/activity/AbsActivity.java
index 85d72da90..c25d8d07d 100644
--- a/common/src/main/java/com/yunbao/common/activity/AbsActivity.java
+++ b/common/src/main/java/com/yunbao/common/activity/AbsActivity.java
@@ -30,6 +30,7 @@ import com.yunbao.common.glide.ImgLoader;
 import com.yunbao.common.interfaces.LifeCycleListener;
 import com.yunbao.common.manager.IMLoginManager;
 import com.yunbao.common.utils.ClickUtil;
+import com.yunbao.common.utils.ToastUtil;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -381,5 +382,7 @@ public abstract class AbsActivity extends AppCompatActivity {
                 break;
         }
     }
-
+    public boolean isKefu(String url){
+        return url.startsWith("https://kefu.yaoulive.com");
+    }
 }
diff --git a/common/src/main/java/com/yunbao/common/activity/WebViewActivity.java b/common/src/main/java/com/yunbao/common/activity/WebViewActivity.java
index 702e94fe1..ee1dbfbfc 100644
--- a/common/src/main/java/com/yunbao/common/activity/WebViewActivity.java
+++ b/common/src/main/java/com/yunbao/common/activity/WebViewActivity.java
@@ -186,7 +186,7 @@ public class WebViewActivity extends AbsActivity {
             mWebView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
         }
         mWebView.loadUrl(url);
-        AndroidBug5497Workaround.assistActivity(this);
+        AndroidBug5497Workaround.assistActivity(mWebView);
 
         if (Constants.myIntoIndex == 2) {
             ft_title.setVisibility(View.GONE);
diff --git a/common/src/main/java/com/yunbao/common/utils/AndroidBug5497Workaround.java b/common/src/main/java/com/yunbao/common/utils/AndroidBug5497Workaround.java
index bcc191cad..284d2f9fa 100644
--- a/common/src/main/java/com/yunbao/common/utils/AndroidBug5497Workaround.java
+++ b/common/src/main/java/com/yunbao/common/utils/AndroidBug5497Workaround.java
@@ -21,11 +21,14 @@ public class AndroidBug5497Workaround {
     public static void assistActivity(Activity activity) {
         new AndroidBug5497Workaround(activity);
     }
+    public static void assistActivity(View webView) {
+        new AndroidBug5497Workaround(webView);
+    }
 
     private View mChildOfContent;
     private int usableHeightPrevious;
     private int defHeight = ViewGroup.LayoutParams.MATCH_PARENT;
-    private FrameLayout.LayoutParams frameLayoutParams;
+    private ViewGroup.LayoutParams frameLayoutParams;
 
     private AndroidBug5497Workaround(Activity activity) {
         FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
@@ -34,6 +37,7 @@ public class AndroidBug5497Workaround {
             public void onGlobalLayout() {
                 possiblyResizeChildOfContent();
                 int heightDiff = mChildOfContent.getRootView().getHeight() - mChildOfContent.getHeight();
+                System.out.println("heightDiff = " + heightDiff);
                 if (heightDiff < 100) {
                     frameLayoutParams.height = defHeight;
                     mChildOfContent.requestLayout();
@@ -41,7 +45,24 @@ public class AndroidBug5497Workaround {
             }
         });
 
-        frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
+        frameLayoutParams = (ViewGroup.LayoutParams) mChildOfContent.getLayoutParams();
+    }
+
+    public AndroidBug5497Workaround(View content) {
+        mChildOfContent = content;
+        mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+            public void onGlobalLayout() {
+                possiblyResizeChildOfContent();
+                int heightDiff = mChildOfContent.getRootView().getHeight() - mChildOfContent.getHeight();
+                System.out.println("heightDiff = " + heightDiff);
+                if (heightDiff < 100) {
+                    frameLayoutParams.height = defHeight;
+                    mChildOfContent.requestLayout();
+                }
+            }
+        });
+
+        frameLayoutParams = (ViewGroup.LayoutParams) mChildOfContent.getLayoutParams();
     }
 
     private void possiblyResizeChildOfContent() {
diff --git a/main/src/main/java/com/yunbao/main/activity/CustomerServiceWebViewActivity.java b/main/src/main/java/com/yunbao/main/activity/CustomerServiceWebViewActivity.java
index 8da89a678..328e3a2c6 100644
--- a/main/src/main/java/com/yunbao/main/activity/CustomerServiceWebViewActivity.java
+++ b/main/src/main/java/com/yunbao/main/activity/CustomerServiceWebViewActivity.java
@@ -77,11 +77,12 @@ public class CustomerServiceWebViewActivity extends AbsActivity {
         rootView = findViewById(R.id.webView_root);
         mWebView = findViewById(R.id.webView);
         FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
-        params.topMargin = DpUtil.dp2px(1);
+        /*params.topMargin = DpUtil.dp2px(1);
         if (getNavigationBarHeight(mContext) != 0) {
             params.bottomMargin = getNavigationBarHeight(mContext);
-        }
-        mWebView.setLayoutParams(params);
+        }*/
+        AndroidBug5497Workaround.assistActivity(rootView);
+        //mWebView.setLayoutParams(params);
         mWebView.setOverScrollMode(View.OVER_SCROLL_NEVER);
         mWebView.setWebViewClient(new WebViewClient() {
             @Override
@@ -178,7 +179,6 @@ public class CustomerServiceWebViewActivity extends AbsActivity {
             mWebView.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
         }
         mWebView.loadUrl(url);
-        AndroidBug5497Workaround.assistActivity(this);
     }
 
     private void openImageChooserActivity(ValueCallback<Uri> valueCallback) {
@@ -235,21 +235,27 @@ public class CustomerServiceWebViewActivity extends AbsActivity {
     }
 
     protected boolean canGoBack() {
-       // return mWebView != null && mWebView.canGoBack();
-        ToastUtil.showDebug("2调用js userBackShowPraise");
-        mWebView.loadUrl("javascript:userBackShowPraise()");
+        if (!isKefu(mWebView.getUrl()==null?"":mWebView.getUrl())) {
+            mWebView.loadUrl("javascript:userBackShowPraise()");
+            return false;
+        }
+        // return mWebView != null && mWebView.canGoBack();
+
         return false;
     }
+
     @Override
     public void onBackPressed() {
-       // finish();
-        ToastUtil.showDebug("调用js userBackShowPraise");
+        if (!isKefu(mWebView.getUrl()==null?"":mWebView.getUrl())) {
+            finish();
+            return;
+        }
         mWebView.loadUrl("javascript:userBackShowPraise()");
     }
 
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
-        if(keyCode==KeyEvent.KEYCODE_ESCAPE || keyCode==KeyEvent.KEYCODE_BACK){
+        if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) {
             onBackPressed();
             return false;
         }
diff --git a/main/src/main/res/layout/view_main_encourage.xml b/main/src/main/res/layout/view_main_encourage.xml
index 8ba2a27ce..7a7ab6015 100644
--- a/main/src/main/res/layout/view_main_encourage.xml
+++ b/main/src/main/res/layout/view_main_encourage.xml
@@ -7,7 +7,7 @@
         android:id="@+id/rootView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_marginBottom="68dp"
+        android:layout_marginBottom="8dp"
         android:orientation="vertical" />
 
     <ProgressBar