39 lines
1.2 KiB
Dart
39 lines
1.2 KiB
Dart
import 'dart:async';
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import 'package:flutter/foundation.dart';
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import 'package:play_install_referrer/play_install_referrer.dart';
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/// 安装来源 referrer 服务（用于 ch/crest 渠道参数）
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class ReferrerService {
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ReferrerService._();
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static String? _cachedReferrer;
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static final Completer<String?> _completer = Completer<String?>();
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/// 获取 referrer，Android 使用 Google Play Install Referrer，iOS 返回空
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static Future<String?> getReferrer() async {
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if (_cachedReferrer != null) return _cachedReferrer;
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if (_completer.isCompleted) return _completer.future;
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if (defaultTargetPlatform != TargetPlatform.android) {
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_cachedReferrer = '';
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if (!_completer.isCompleted) _completer.complete('');
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return '';
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}
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try {
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final details = await PlayInstallReferrer.installReferrer;
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_cachedReferrer = details.installReferrer ?? '';
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} catch (_) {
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_cachedReferrer = '';
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}
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if (!_completer.isCompleted) _completer.complete(_cachedReferrer);
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return _cachedReferrer;
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}
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/// 初始化并缓存 referrer（建议在 app 启动时调用）
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static Future<void> init() async {
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await getReferrer();
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}
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}
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