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check null safety

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This commit is contained in:
tzw
2021-09-10 16:33:52 +06:30
parent 3eacbef117
commit d8c86a512b
46 changed files with 275 additions and 304 deletions
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8
lib/pages/widgets/barcode_scanner.dart
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@@ -1,9 +1,9 @@
import 'package:barcode_scan/barcode_scan.dart';
import 'package:barcode_scan2/platform_wrapper.dart';
Future<String> scanBarcode() async {
Future<String?> scanBarcode() async {
try {
String barcode = await BarcodeScanner.scan();
if (barcode == null) return null;
var scanResult = await BarcodeScanner.scan();
String barcode = scanResult.rawContent;
String gs = String.fromCharCode(29);
if (barcode.contains(gs)) {