修改720多余按钮问题

app/src/main/res/layout/activity_mints_web_view.xml

 <?xml version="1.0" encoding="utf-8"?>
 <layout xmlns:app="http://schemas.android.com/apk/res-auto">
+
     <data>
+
         <variable
             name="viewModel"
             type="com.mints.street.webview.MintsWebViewModel" />
     </data>
-    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+
+    <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:orientation="vertical"
-        >
+        android:orientation="vertical">
+
         <com.fry.base.ui.widget.CommonTitleBar
             android:id="@+id/ctb_title"
             android:layout_width="match_parent"
@@ -17,9 +20,18 @@
             app:ctb_theme="dark"
             app:layout_constraintTop_toTopOf="parent" />
 
-            <com.github.lzyzsd.jsbridge.BridgeWebView
+        <com.github.lzyzsd.jsbridge.BridgeWebView
             android:id="@+id/webview"
             android:layout_width="match_parent"
-            android:layout_height="match_parent" />
-    </LinearLayout>
+            android:layout_height="match_parent"
+            app:layout_constraintTop_toBottomOf="@id/ctb_title" />
+
+        <View
+            android:id="@+id/v_720_bg"
+            android:layout_width="match_parent"
+            android:layout_height="55dp"
+            android:background="@color/white"
+            android:visibility= "gone"
+            app:layout_constraintBottom_toBottomOf="parent" />
+    </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>
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