fix: 缺省图片添加

lib/utils/tools/help_img.dart

@@ -23,6 +23,9 @@ class ConstImg {
   static const String noworkImg = "assets/common/nowork_img.png";
   // applogo
   static const String appLogo = "assets/common/applogo.png";
+  // space_img_h
+  static const String spaceImgH = "assets/common/space_img_h.png";
+  static const String spaceImgW = "assets/common/space_img_w.png";
 
 
   static const String homeBg = "assets/imgs/home_bg.png";
@@ -137,6 +140,7 @@ class HelpImg {
     BoxShape? shape,
     BorderRadius? borderRadius,
     Widget? errorWidget,
+        bool isWidth = false,
   }) {
     return ClipRRect(
       borderRadius: borderRadius ?? BorderRadius.circular(3),
@@ -147,6 +151,7 @@ class HelpImg {
         height: height,
         shape: shape,
         errorWidget: errorWidget,
+        isWidth: isWidth
       ),
     );
   }
@@ -161,6 +166,7 @@ class HelpImg {
     BoxShape? shape,
     BorderRadius? borderRadius,
     Widget? errorWidget,
+    bool isWidth = false,
   }) {
     // bool isSvg = path.toLowerCase().endsWith('.svg');
     // if (isSvg) {
@@ -180,6 +186,11 @@ class HelpImg {
     //     ),
     //   );
     // }
+    return FadeInImage.assetNetwork(
+        placeholder: isWidth==true ? ConstImg.spaceImgW : ConstImg.spaceImgH, image: path,
+      width: width, height: height, fit: BoxFit.cover
+    );
+
     return Image.network(
       path,
       width: width,
@@ -187,33 +198,17 @@ class HelpImg {
       fit: fit,
       loadingBuilder: (context, child, loadingProgress) {
         if (loadingProgress == null) return child;
-        return SizedBox(
-          width: width, height: height,
-          child: Center(
-            //CircularProgressIndicator
-            child: Container(
-              width: 30,
-              height: 30,
-              padding: const EdgeInsets.all(5),
-              child: CircularProgressIndicator(
-                color: Colors.white,
-                strokeWidth: 1,
-              ),
-            ),
-          ),
+        return HelpImg.asset(isWidth==true ? ConstImg.spaceImgW : ConstImg.spaceImgH, fit: BoxFit.fill,
+            width: width, height: height
         );
       },
       errorBuilder: (context, error, stackTrace) {
         // ✅ 关键：处理加载失败的情况
         return errorWidget ??
-            Container(
-              width: 50,
-              height: 50,
-              color: Colors.grey[300],
-              child: const Icon(
-                Icons.broken_image,
-                color: Colors.grey,
-                size: 40,
+            SizedBox(
+              width: width, height: height,
+              child: HelpImg.asset(isWidth==true ? ConstImg.spaceImgW : ConstImg.spaceImgH, fit: BoxFit.fill,
+                  width: width, height: height
               ),
             );
       },