导航栏引用公共组件

src/components/BackNavbar/index.tsx

@@ -9,6 +9,7 @@ interface BackNavbarProps {
   title?: string;
   showAvatar?: boolean;
   showBackButton?: boolean;
+  backgroundColor?: string;
   onBack?: () => void;
   className?: string;
 }
@@ -17,6 +18,7 @@ const BackNavbar: React.FC<BackNavbarProps> = ({
   title = '消息',
   showAvatar = true,
   showBackButton = false,
+  backgroundColor,
   onBack,
   className = ''
 }) => {
@@ -36,7 +38,8 @@ const BackNavbar: React.FC<BackNavbarProps> = ({
       className={`back-navbar ${className}`}
       style={{
         paddingTop: `${statusBarHeight}px`,
-        height: `${totalHeight}px`
+        height: `${totalHeight}px`,
+        backgroundColor: backgroundColor || "#ffffff"
       }}
     >
       <View