55 lines
1.3 KiB
Dart
55 lines
1.3 KiB
Dart
import 'package:flutter/material.dart';
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import '../Common.dart';
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import '../Method.dart';
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int _timeOffsetHour = 8;
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int currentTimeOffsetHour() {
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return _timeOffsetHour;
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}
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const _propertyName = "timeOffsetHour";
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Future<void> initTimeZone() async {
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_timeOffsetHour = int.parse(await method.loadProperty(_propertyName, "8"));
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}
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Future<void> chooseTimeZone(BuildContext context) async {
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List<String> timeZones = [];
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for (var i = -12; i <= 12; i++) {
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var str = i.toString();
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if (!str.startsWith("-")) {
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str = "+" + str;
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}
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timeZones.add(str);
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}
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String? result = await chooseListDialog<String>(context, "时区选择", timeZones);
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if (result != null) {
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if (result.startsWith("+")) {
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result = result.substring(1);
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}
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_timeOffsetHour = int.parse(result);
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await method.saveProperty(_propertyName, "$result");
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}
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}
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Widget timeZoneSetting() {
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return StatefulBuilder(
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builder: (BuildContext context, void Function(void Function()) setState) {
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var c = "$_timeOffsetHour";
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if (!c.startsWith("-")) {
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c = "+" + c;
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}
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return ListTile(
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title: Text("时区"),
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subtitle: Text(c),
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onTap: () async {
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await chooseTimeZone(context);
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setState(() {});
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},
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);
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},
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);
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}
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