38 lines
1.0 KiB
Dart
38 lines
1.0 KiB
Dart
import 'dart:async';
|
|
|
|
import 'package:audioplayers/audioplayers.dart';
|
|
import 'package:vibration/vibration.dart';
|
|
|
|
/// 提醒：同类目标 10s 内只提醒一次。
|
|
/// 震动/提示音默认开启，不提供关闭入口。
|
|
class Reminder {
|
|
// 惰性创建：AudioPlayer 构造即发起平台初始化（无插件环境下未处理错误会
|
|
// 泄漏为 unhandled async error），首响时才建
|
|
AudioPlayer? _player;
|
|
String? _lastAlertLabel;
|
|
int _lastAlertAt = 0;
|
|
|
|
/// 同类目标 10s 内只提醒一次
|
|
void onDetected(String label) {
|
|
final now = DateTime.now().millisecondsSinceEpoch;
|
|
if (label == _lastAlertLabel && now - _lastAlertAt < 10000) return;
|
|
_lastAlertAt = now;
|
|
_lastAlertLabel = label;
|
|
|
|
_vibrate();
|
|
_playTone();
|
|
}
|
|
|
|
void _vibrate() => Vibration.vibrate(duration: 200);
|
|
|
|
Future<void> _playTone() async {
|
|
final p = _player ??= AudioPlayer();
|
|
await p.stop();
|
|
await p.play(AssetSource('beep.wav'));
|
|
}
|
|
|
|
void release() {
|
|
_player?.dispose();
|
|
}
|
|
}
|