update search text field

lib/text_field/as_search_text_field.dart

@@ -13,7 +13,7 @@ class ASSearchTextField extends StatefulWidget implements PreferredSizeWidget {
     this.onSubmitted,
     this.margin,
     this.onPressed,
-    this.width,
+    this.height,
   })  : button = false,
         super(key: key);
 
@@ -27,7 +27,7 @@ class ASSearchTextField extends StatefulWidget implements PreferredSizeWidget {
     this.onSubmitted,
     this.margin,
     this.onPressed,
-    this.width,
+    this.height,
   })  : button = true,
         super(key: key);
 
@@ -55,13 +55,13 @@ class ASSearchTextField extends StatefulWidget implements PreferredSizeWidget {
   final VoidCallback onPressed;
 
   ///高度
-  final double width;
+  final double height;
 
   @override
   _ASSearchTextFieldState createState() => _ASSearchTextFieldState();
 
   @override
-  Size get preferredSize => Size.fromHeight(42);
+  Size get preferredSize => Size.fromHeight(this.height ?? 42.w);
 }
 
 class _ASSearchTextFieldState extends State<ASSearchTextField> {
@@ -81,7 +81,6 @@ class _ASSearchTextFieldState extends State<ASSearchTextField> {
             vertical: 3.w,
           ),
       child: MaterialButton(
-        minWidth: widget.width,
         padding: EdgeInsets.zero,
         color: Color(0xFFF8F8F8),
         elevation: 0,