Fix null items in add package

lib/providers/packages.dart

@@ -129,6 +129,7 @@ class PackageProvider extends ChangeNotifier {
         ),
       );
     }
+    if (result.isEmpty) result.add("");
     itemVals = result;
     initialItemValue = itemVals[0];
     TextEditingController newLbl = new TextEditingController();
@@ -248,8 +249,7 @@ class PackageProvider extends ChangeNotifier {
     items = [];
     searchBoxValue = value;
     originalItems!.forEach((result) {
-      if (
-      result.id
+      if (result.id
               .toString()
               .toLowerCase()
               .contains(searchBoxValue.toLowerCase()) ||
@@ -264,8 +264,7 @@ class PackageProvider extends ChangeNotifier {
           result.id
               .toString()
               .toUpperCase()
-          .contains(searchBoxValue.toLowerCase())
-      ) {
+              .contains(searchBoxValue.toLowerCase())) {
         items!.add(result);
       }
     });
@@ -338,8 +337,7 @@ class PackageProvider extends ChangeNotifier {
       for (var item in data['items']) {
         // itemsList
         //     .add("${item['name']} - ${item['udi'] != null ? item['udi'] : ''}");
-        itemsList
-            .add("${item['id']}  ${item['name']}");
+        itemsList.add("${item['id']}  ${item['name']}");
       }
     }
     print(data);
@@ -362,10 +360,7 @@ class PackageProvider extends ChangeNotifier {
     final baseStorage = await getExternalStorageDirectory();
     final taskId = await FlutterDownloader.enqueue(
       url: Url.exportPackages,
-      headers: {
-        'Authorization': User.token,
-        "Accept": "*"
-      },
+      headers: {'Authorization': User.token, "Accept": "*"},
       savedDir: baseStorage!.path,
       showNotification: true,
       openFileFromNotification: true,