first commit

lib/screen/widgets/error_dialog.dart

@@ -0,0 +1,59 @@
+import 'package:flutter/material.dart';
+
+import '../../app/constant.dart';
+
+Future<String?> ErrorDialog(
+    BuildContext context, String errorMsg, String header) {
+  return showDialog<String>(
+    context: context,
+    builder: (BuildContext context) => Dialog(
+      child: Padding(
+        padding: const EdgeInsets.all(20),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          mainAxisAlignment: MainAxisAlignment.start,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: <Widget>[
+            Text(
+              header,
+              style: Constant.subTitle(context: context),
+            ),
+            const SizedBox(
+              height: 10,
+            ),
+            SizedBox(
+                width: Constant.getActualX(context: context, x: 700),
+                child: const Divider()),
+            SizedBox(
+              height: Constant.getActualY(context: context, y: 500),
+              width: Constant.getActualX(context: context, x: 700),
+              child: ListView(
+                children: [Text(errorMsg)],
+              ),
+            ),
+            SizedBox(
+                width: Constant.getActualX(context: context, x: 700),
+                child: const Divider()),
+            const SizedBox(
+              height: 10,
+            ),
+            SizedBox(
+              width: Constant.getActualX(context: context, x: 700),
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  TextButton(
+                    onPressed: () {
+                      Navigator.pop(context);
+                    },
+                    child: const Text('Tutup'),
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    ),
+  );
+}