feat:下载图片优化

lib/common/utils/app/app_network_tool.dart

@@ -10,7 +10,7 @@ import 'package:image/image.dart' as imglib;
 import 'package:pj_supermarket_cloud/common/index.dart';
 
 abstract class AppNetworkTool {
-  static const _tag = "判断是否有网络";
+  static const _tag = "网络工具类";
 
   static StreamSubscription<List<ConnectivityResult>>? subscription;
 
@@ -117,11 +117,21 @@ abstract class AppNetworkTool {
       networkImage = "${Constants.ossUrl}$networkImage";
     }
     try {
-      final response = await http
-          .get(Uri.parse(networkImage))
-          .timeout(const Duration(seconds: 30));
-      if (response.statusCode != 200) return null;
-      return response.bodyBytes;
+      final client = http.Client();
+      try {
+        final request = http.Request('GET', Uri.parse(networkImage));
+        final streamedResponse = await client.send(request).timeout(
+              const Duration(seconds: 30),
+            );
+        if (streamedResponse.statusCode != 200) return null;
+        final List<int> bytes = [];
+        await for (final chunk in streamedResponse.stream) {
+          bytes.addAll(chunk);
+        }
+        return Uint8List.fromList(bytes);
+      } finally {
+        client.close();
+      }
     } catch (e) {
       logger.e('|$_tag|从网络中下载图片错误:|$e|');
       return null;

lib/common/widgets/app/app_img.dart

@@ -59,7 +59,7 @@ Widget appImg(
   double width = 100,
   double height = 100,
   double errorSize = 20,
-  BoxFit fit = BoxFit.cover,
+  BoxFit fit = BoxFit.contain,
 }) {
   if (ObjectUtil.isEmpty(src)) {
     return appEmptyIcon(Get.context!);