优化使用体验

lib/base/ql_app_bar.dart

@@ -20,16 +20,23 @@ class QlAppBar extends StatelessWidget with PreferredSizeWidget {
   @override
   Widget build(BuildContext context) {
     Widget back = backWidget ??
-        GestureDetector(
+        InkWell(
           onTap: () {
             if (backCall != null) {
               backCall!();
+            } else {
+              Navigator.of(context).pop();
             }
           },
-          child: const Center(
-            child: Icon(
-              CupertinoIcons.left_chevron,
-              color: Colors.white,
+          child: const Padding(
+            padding: EdgeInsets.symmetric(
+              horizontal: 15,
+            ),
+            child: Center(
+              child: Icon(
+                CupertinoIcons.left_chevron,
+                color: Colors.white,
+              ),
             ),
           ),
         );

lib/base/theme.dart

@@ -63,6 +63,16 @@ ThemeData darkTheme = ThemeData.dark().copyWith(
         color: _primaryColor,
       ),
     ),
+    border: UnderlineInputBorder(
+      borderSide: BorderSide(
+        color: Color(0xff999999),
+      ),
+    ),
+    enabledBorder: UnderlineInputBorder(
+      borderSide: BorderSide(
+        color: Color(0xff999999),
+      ),
+    ),
   ),
   tabBarTheme: const TabBarTheme(
     labelStyle: TextStyle(
@@ -108,6 +118,16 @@ ThemeData lightTheme = ThemeData.light().copyWith(
         color: _primaryColor,
       ),
     ),
+    border: UnderlineInputBorder(
+      borderSide: BorderSide(
+        color: Color(0xff999999),
+      ),
+    ),
+    enabledBorder: UnderlineInputBorder(
+      borderSide: BorderSide(
+        color: Color(0xff999999),
+      ),
+    ),
   ),
   appBarTheme: const AppBarTheme(
     backgroundColor: _primaryColor,