先添加UNNotificationServiceExtension家妆。File - new - targrt - UNNotificationServiceExtension

項(xiàng)目和UNNotificationServiceExtension钠龙，都要添加appGroups蝗拿，GroupIdentifier要一致,一般是"group.自己項(xiàng)目的BundleIdentifier"凝化，不一致會(huì)有問(wèn)題稍坯。
添加appGroups的原因是：共享一個(gè)group后，可以合成播報(bào)語(yǔ)音搓劫，然后存到group中遵班，之后在UNNotificationServiceExtension中可以讀取到合成后的語(yǔ)音文件祭埂。

UNNotificationServiceExtension的Minimum Deployment最低版本號(hào)要改一下，默認(rèn)是最高iOS系統(tǒng)版本。會(huì)出現(xiàn)低版本真機(jī)調(diào)試不可用的情況

網(wǎng)上的實(shí)現(xiàn)方式有3種旋奢，我用的是第一種炊豪。
關(guān)于音頻的拼接湃缎，如果用Data數(shù)據(jù)流的方式拼接岁忘，會(huì)出現(xiàn)只有第一段音頻聲音的問(wèn)題，所有還是要用AVAssetExportSession來(lái)拼接深员。
1種是修改系統(tǒng)的通知聲音负蠕，可以實(shí)現(xiàn)效果，但是因?yàn)橐袅坎荒苷{(diào)節(jié)倦畅，聲音太小遮糖。如果對(duì)音量沒(méi)有要求的，可以用這個(gè)方案叠赐，而且體驗(yàn)更好欲账。

//自定義通知聲音
    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
        let keyS = bestAttemptContent?.userInfo["key"] as? String
        if keyS == "sound" {
            let valueS = bestAttemptContent?.userInfo["value"] as? String//金額
            let formatter = NumberFormatter()
            formatter.locale = Locale(identifier: "zh-CN")
            formatter.allowsFloats = true
            let strF: CGFloat = formatter.number(from: valueS ?? "0") as? CGFloat ?? 0.0
            formatter.numberStyle = . spellOut
            let resultS: String = formatter.string(from: NSNumber (value: strF)) ?? ""
            let resultSA: Array<String> = resultS.map { String($0) }
            var finalA: Array<String> = ["錢(qián)響", "哥小兔到賬"]
            finalA.append(contentsOf: resultSA)
            finalA.append("元")
            mergeAVAsset(with: finalA) { (name,path)  in
                if let bestAttemptContent = self.bestAttemptContent {
                    let temp3 = UNNotificationSoundName(rawValue: name ?? "")
                    let temp4 = UNNotificationSound.init(named: temp3)
                    bestAttemptContent.sound = temp4
                    contentHandler(bestAttemptContent)
                }
            }
        } else {
            if let bestAttemptContent = self.bestAttemptContent {
                contentHandler(bestAttemptContent)
            }
        }
    }

第2種是：AVAudioPlayer播放語(yǔ)音，瑕疵點(diǎn)就是芭概，推送橫幅要在語(yǔ)音播報(bào)結(jié)束后出現(xiàn)赛不，不然就會(huì)和AVAudioPlayer語(yǔ)音播報(bào)沖突。(功能實(shí)現(xiàn)了罢洲，但是打包上傳有問(wèn)題踢故，這個(gè)當(dāng)打包上傳到Appstore上就會(huì)出現(xiàn)錯(cuò)誤了，提示說(shuō)UNNotificationServiceExtension中的UIBackgroundModes的Audio這個(gè)字段是非法的惹苗，如果是企業(yè)分發(fā)模式可以添加殿较。要上架審核的話，是無(wú)法添加的)所以這個(gè)方法只適合企業(yè)分發(fā)用鸽粉，上架的話暫時(shí)還是用上面的第1方法斜脂。

UNNotificationServiceExtension 要添加一下權(quán)限抓艳，否則AVAudioPlayer不能在UNNotificationServiceExtension中播放

截屏2024-08-23 10.53.39.png

import UserNotifications
import MediaPlayer

class NotificationService: UNNotificationServiceExtension {

    var contentHandler: ((UNNotificationContent) -> Void)?
    var bestAttemptContent: UNMutableNotificationContent?

    var audioPlayer: AVAudioPlayer?
    
    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
        let keyS = bestAttemptContent?.userInfo["type"] as? Int
        if keyS == 2 {
            let valueS = bestAttemptContent?.userInfo["amount"] as? String//金額
            let formatter = NumberFormatter()
            formatter.locale = Locale(identifier: "zh-CN")
            formatter.allowsFloats = true
            let strF: CGFloat = formatter.number(from: valueS ?? "0") as? CGFloat ?? 0.0
            formatter.numberStyle = . spellOut
            let resultS: String = formatter.string(from: NSNumber (value: strF)) ?? ""
            let resultSA: Array<String> = resultS.map { String($0) }
            var finalA: Array<String> = ["錢(qián)響", "哥小兔到賬"]
            finalA.append(contentsOf: resultSA)
            finalA.append("元")
            mergeAVAsset(with: finalA) { (name,path)  in
//                NSLog("合并后的音頻路徑: \(path)")
                let audioSession = AVAudioSession.sharedInstance()
                do {//配置音頻触机，可以在后臺(tái)、靜音情況下播放
                    try audioSession.setCategory(.playback, mode:.default, options: [.mixWithOthers])
                    try audioSession.setActive(true)
                } catch {
                    print("Error configuring audio session: \(error)")
                }
                self.audioPlayer = try? AVAudioPlayer(contentsOf: path ?? URL(fileURLWithPath: ""))
                self.audioPlayer?.delegate = self
                self.audioPlayer?.play()
            }
        } else {
            if let bestAttemptContent = self.bestAttemptContent {
                // Modify the notification content here...
//                    bestAttemptContent.title = "\(bestAttemptContent.title) [modified]"
                contentHandler(bestAttemptContent)
            }
        }
    }
     
    override func serviceExtensionTimeWillExpire() {
        // Called just before the extension will be terminated by the system.
        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            contentHandler(bestAttemptContent)
        }
    }
    //合成要播報(bào)的語(yǔ)音
    func mergeAVAsset(with sourcePathArr: [String], rate: Double = 1.0, completed: @escaping (_ soundName: String?,_ soundsFileURL: URL?) -> Void) {
        // 創(chuàng)建音頻軌道, 并獲取多個(gè)音頻素材的軌道
        let composition = AVMutableComposition()
        // 音頻插入的開(kāi)始時(shí)間, 用于記錄每次添加音頻文件的開(kāi)始時(shí)間
        var beginTime = CMTime.zero
        for audioFilePath in sourcePathArr {
            // 獲取音頻素材
            let audioFileURL: String = Bundle.main.path(forResource: audioFilePath, ofType: "mp3") ?? ""
            guard let audioAsset = AVURLAsset(url: URL(fileURLWithPath: audioFileURL)) as AVAsset? else { continue }
            // 音頻軌道
            let audioTrack = composition.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid)
            // 獲取音頻素材軌道
            guard let audioAssetTrack = audioAsset.tracks(withMediaType: .audio).first else { continue }
            // 音頻合并 - 插入音軌文件
            try? audioTrack?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: audioAsset.duration), of: audioAssetTrack, at: beginTime)
            // 記錄尾部時(shí)間
            beginTime = CMTimeAdd(beginTime, audioAsset.duration)
        }
        let finalTimeValue = composition.duration.value * Int64(10 * rate)
        let finalTimeScale = composition.duration.timescale * 10
        composition.scaleTimeRange(.init(start: .zero, end: composition.duration), toDuration: .init(value: finalTimeValue, timescale: finalTimeScale))
        
        let groupURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.自己項(xiàng)目的BundleIdentifier")
        //建立文件夾
        let soundsURL = groupURL?.appendingPathComponent("Library/", isDirectory: true)
        let soundsURL2 = groupURL?.appendingPathComponent("Library/Sounds/", isDirectory: true)
        do {
            //建立文件夾
            if !FileManager.default.fileExists(atPath: (soundsURL?.path ?? "")) {
                try FileManager.default.createDirectory(atPath: (soundsURL?.path ?? ""), withIntermediateDirectories: true, attributes: nil)
            }
            //建立文件夾
            if !FileManager.default.fileExists(atPath: (soundsURL2?.path ?? "")) {
                try FileManager.default.createDirectory(atPath: (soundsURL2?.path ?? ""), withIntermediateDirectories: true, attributes: nil)
            }
        } catch {
            print("Error 建立文件夾: \(error)")
        }
        // 新建文件名，如果存在就刪除舊的
        let soundName = "sound.m4a"
        let outPutFilePath = "Library/Sounds/" + soundName
        let soundsFileURL = groupURL?.appendingPathComponent(outPutFilePath, isDirectory: false)
        
        if FileManager.default.fileExists(atPath: (soundsFileURL?.path ?? "")) {
            do {
                try FileManager.default.removeItem(atPath:(soundsFileURL?.path ?? ""))
            } catch {
                print("Error 新建文件名儡首，如果存在就刪除舊的: \(error)")
            }
        }
        // 導(dǎo)出合并后的音頻文件
        guard let session = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetAppleM4A) else { completed(nil, nil); return }
        // 音頻文件輸出
        session.outputURL = soundsFileURL
        session.outputFileType = AVFileType.m4a // 與上述的`preset`相對(duì)應(yīng)
        session.shouldOptimizeForNetworkUse = true // 優(yōu)化網(wǎng)絡(luò)
        //            session.audioMix = videoAudioMixTools
        session.exportAsynchronously {
            if session.status == .completed {
//                print("合并成功 ----\(soundsFileURL)")
                completed(soundName, soundsFileURL)
            } else {
                // 其他情況, 具體請(qǐng)看這里`AVAssetExportSessionStatus`.
//                print("合并失敗 ----\(session.status.rawValue)")
//                print("合并失敗 ----\(session.error)")
                completed(nil, nil)
            }
        }
    }
}
extension NotificationService: AVAudioPlayerDelegate {
    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
        //播放結(jié)束片任，執(zhí)行contentHandler，結(jié)束這個(gè)通知
        if (contentHandler != nil) && (bestAttemptContent != nil) {
            bestAttemptContent?.sound = .none//因?yàn)橛姓Z(yǔ)音播報(bào)了蔬胯，這里把系統(tǒng)通知的聲音關(guān)了
            contentHandler!(bestAttemptContent!)
        }
    }
}

像 哥小兔到賬.mp3对供、 元.mp3、 萬(wàn).mp3 這些語(yǔ)音文件氛濒，可以去ai語(yǔ)音合成产场，類(lèi)似的有：百度、科大訊飛舞竿、標(biāo)貝等

語(yǔ)音生成工具：標(biāo)貝悅讀京景、百度、科大訊飛

第三種
經(jīng)過(guò)查找骗奖，大概率支付寶确徙、微信使用的使用voip模式，通過(guò)查找微信與支付寶的ipa执桌，ipa中配置的文件都UIBackgroundModes(后臺(tái)模式)包含voip鄙皇。
所以大概率支付寶與微信都使用的是Voip PushKit實(shí)現(xiàn)的收款的語(yǔ)音播報(bào)功能
之后也會(huì)調(diào)查下Voip PushKit實(shí)現(xiàn)的收款的語(yǔ)音播報(bào)功能，PushKit和極光推送還不太一樣仰挣。持續(xù)關(guān)注中伴逸。。椎木。