119 lines
3.7 KiB
Dart
119 lines
3.7 KiB
Dart
// Author: fengshengxiong
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// Date: 2024/6/25
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// Description: 插页广告
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import 'dart:io' show Platform;
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import 'package:connectivity_plus/connectivity_plus.dart';
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import 'package:flutter/foundation.dart';
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import 'package:google_mobile_ads/google_mobile_ads.dart';
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import 'package:tone_snap/utils/log_util.dart';
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class InterstitialAdManager {
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InterstitialAdManager._();
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static final InterstitialAdManager _instance = InterstitialAdManager._();
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factory InterstitialAdManager() => _instance;
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/// 加载和显示广告之间允许的最长持续时间
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final Duration maxCacheDuration = const Duration(hours: 4);
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/// 跟踪加载时间，这样我们就不会显示过期的广告
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DateTime? _appOpenLoadTime;
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InterstitialAd? _interstitialAd;
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bool isShowingAd = false;
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/// 插页广告单元id
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final adUnitId = Platform.isAndroid
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? (kReleaseMode ? '' : 'ca-app-pub-3940256099942544/1033173712')
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: (kReleaseMode ? 'ca-app-pub-5684307632319406/2760767691' : 'ca-app-pub-3940256099942544/4411468910');
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/// 加载广告
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void loadAd() async {
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final List<ConnectivityResult> connectivityResult = await (Connectivity().checkConnectivity());
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if (connectivityResult.contains(ConnectivityResult.none)) {
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return;
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}
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if (isAdAvailable) {
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return;
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}
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InterstitialAd.load(
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adUnitId: adUnitId,
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request: const AdRequest(),
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adLoadCallback: InterstitialAdLoadCallback(
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onAdLoaded: (ad) {
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LogUtil.d('插页广告加载完成');
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_interstitialAd = ad;
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_appOpenLoadTime = DateTime.now();
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},
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onAdFailedToLoad: (LoadAdError error) {
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LogUtil.d('插页广告加载失败: $error');
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},
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),
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);
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}
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/// 是否可以播放广告
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bool get isAdAvailable {
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return _interstitialAd != null;
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}
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/// 显示广告（如果存在且尚未显示）
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/// 如果先前缓存的广告已过期，则只加载并缓存新广告
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void showAdIfAvailable({Function()? onTap}) {
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if (!isAdAvailable) {
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LogUtil.d('尝试在可用之前显示广告');
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loadAd();
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if(onTap != null) onTap();
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return;
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}
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if (isShowingAd) {
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LogUtil.d('尝试在已显示广告的情况下显示广告');
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if(onTap != null) onTap();
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return;
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}
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if (DateTime.now().subtract(maxCacheDuration).isAfter(_appOpenLoadTime!)) {
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LogUtil.d('超过了最大缓存持续时间。正在加载另一个广告');
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_interstitialAd!.dispose();
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_interstitialAd = null;
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loadAd();
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if(onTap != null) onTap();
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return;
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}
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// 设置 fullScreenContentCallback 并显示广告
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_interstitialAd!.fullScreenContentCallback = FullScreenContentCallback(
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// 暂停应用程序中的活动或记录广告展示的时间
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onAdShowedFullScreenContent: (ad) {
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isShowingAd = true;
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LogUtil.d('$ad onAdShowedFullScreenContent');
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},
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// 更适合用于跟踪广告展示的次数和效果，以及执行与广告展示相关的操作
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onAdImpression: (ad) {
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LogUtil.d('$ad onAdImpression');
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},
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onAdFailedToShowFullScreenContent: (ad, error) {
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LogUtil.d('$ad onAdFailedToShowFullScreenContent: $error');
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isShowingAd = false;
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ad.dispose();
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_interstitialAd = null;
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if(onTap != null) onTap();
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},
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onAdDismissedFullScreenContent: (ad) {
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LogUtil.d('$ad onAdDismissedFullScreenContent');
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isShowingAd = false;
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ad.dispose();
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_interstitialAd = null;
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loadAd();
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if(onTap != null) onTap();
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},
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onAdClicked: (ad) {
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LogUtil.d('$ad onAdClicked');
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},
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);
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_interstitialAd!.show();
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}
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} |