在WatchOS上使用AVAudioEngine录制时阻止播放

import AVFoundation

// 创建AVAudioEngine实例
let audioEngine = AVAudioEngine()

// 创建AVAudioPlayerNode实例
let playerNode = AVAudioPlayerNode()

// 创建AVAudioInputNode实例
let inputNode = audioEngine.inputNode

// 将AVAudioPlayerNode连接到AVAudioEngine的输出节点
audioEngine.attach(playerNode)
audioEngine.connect(playerNode, to: audioEngine.outputNode)

// 将AVAudioInputNode连接到AVAudioEngine的输入节点
audioEngine.connect(inputNode, to: audioEngine.mainMixerNode, format: inputNode.inputFormat(forBus: 0))

// 设置AVAudioEngine的输入节点为活动状态
inputNode.installTap(onBus: 0, bufferSize: 1024, format: inputNode.inputFormat(forBus: 0)) { (buffer, time) in
    // 处理录制的音频数据
}

// 启动AVAudioEngine
try? audioEngine.start()

// 停止播放音频
playerNode.stop()