52 lines
1.6 KiB
Dart
52 lines
1.6 KiB
Dart
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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/// 持久化键：是否显示设备详情页的运行指标（CPU / 内存 / 磁盘 / 网络）。
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const String _kShowRuntimeMetrics = 'show_runtime_metrics';
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/// 读取已保存的显示偏好；默认返回 false（即默认隐藏运行指标）。
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Future<bool> loadSavedShowRuntimeMetrics() async {
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try {
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final prefs = await SharedPreferences.getInstance();
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return prefs.getBool(_kShowRuntimeMetrics) ?? false;
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} catch (_) {
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return false;
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}
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}
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/// 设备详情页运行指标显示偏好管理。
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///
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/// - 默认关闭，首次进入设备详情时不展示 CPU/内存/磁盘/网络卡片。
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/// - 用户可在「我的 → 设置」中手动开启。
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/// - 状态持久化到 [SharedPreferences]，切换账号/重启 App 后仍保持。
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class ShowRuntimeMetricsNotifier extends Notifier<bool> {
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@override
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bool build() {
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_load();
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return false;
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}
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Future<void> _load() async {
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final saved = await loadSavedShowRuntimeMetrics();
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if (saved != state) {
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state = saved;
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}
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}
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/// 切换显示状态并持久化。
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Future<void> setValue(bool value) async {
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state = value;
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try {
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool(_kShowRuntimeMetrics, value);
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} catch (_) {
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// 忽略持久化失败，运行时状态仍生效。
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}
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}
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}
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/// 运行指标显示偏好提供者。
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final showRuntimeMetricsProvider = NotifierProvider<ShowRuntimeMetricsNotifier, bool>(
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ShowRuntimeMetricsNotifier.new,
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);
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