feat:增加Minio工具类

lib/widgets/common/form.dart

@@ -79,7 +79,6 @@ Widget _buildCancelButton(BuildContext context) {
       backgroundColor: Colors.white,
       foregroundColor: const Color(0xFF4E5969),
       side: const BorderSide(color: Color(0xFFDCDFE6)),
-      padding: const EdgeInsets.symmetric(vertical: 15),
       shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
       elevation: 0,
     ),
@@ -90,10 +89,9 @@ Widget _buildCancelButton(BuildContext context) {
 /// 提交按钮
 Widget _buildSubmitButton(BuildContext context, VoidCallback onConfirm) {
   return ElevatedButton(
-    onPressed: onConfirm,
+    onPressed: () => onConfirm(),
     style: ElevatedButton.styleFrom(
-      backgroundColor: Theme.of(context).primaryColor, // 使用传入的context获取主题
-      padding: const EdgeInsets.symmetric(vertical: 15),
+      backgroundColor: Theme.of(context).colorScheme.primary,
       shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
       elevation: 0,
     ),