- 作用
AVPLayer：可以用来播放在线及本地音视频
AVAudioSession：音频会话，主要用来管理音频设置与硬件交互
使用时需要导入
#import <AVFoundation/AVFoundation.h>
- AVAudioSession中配置选项：
AVAudioSessionCategory
注意：除了 AVAudioSessionCategoryMultiRoute 外，其他的 Category 都遵循 last in wins 原则，即最后接入的音频设备作为输入或输出的主设备。
1.AVAudioSessionCategoryAmbient
当前App的播放声音可以和其他app播放的声音共存，当锁屏或按静音时停止。
2.AVAudioSessionCategorySoloAmbient
只能播放当前App的声音，其他app的声音会停止，当锁屏或按静音时停止。
3.AVAudioSessionCategoryPlayback
只能播放当前App的声音，其他app的声音会停止，当锁屏或按静音时不会停止。
4.AVAudioSessionCategoryRecord
只能用于录音，其他app的声音会停止，当锁屏或按静音时不会停止
5.AVAudioSessionCategoryPlayAndRecord
在录音的同时播放其他声音，当锁屏或按静音时不会停止
可用于听筒播放，比如微信语音消息听筒播放
6.AVAudioSessionCategoryAudioProcessing
使用硬件解码器处理音频，该音频会话使用期间，不能播放或录音
7.AVAudioSessionCategoryMultiRoute
多种音频输入输出，例如可以耳机、USB设备同时播放等
AVAudioSessionCategoryOptions
1.AVAudioSessionModeDefault
默认的模式，适用于所有的场景，可用于场景还原
2.AVAudioSessionModeVoiceChat
适用类别 ：
AVAudioSessionCategoryPlayAndRecord
应用场景VoIP
3.AVAudioSessionModeGameChat
适用类别：
AVAudioSessionCategoryPlayAndRecord
应用场景游戏录制，由GKVoiceChat自动设置，无需手动调用
4.AVAudioSessionModeVideoRecording
适用类别：
AVAudioSessionCategoryPlayAndRecord
AVAudioSessionCategoryRecord
应用场景视频录制
5.AVAudioSessionModeMoviePlayback
适用类别：
AVAudioSessionCategoryPlayBack
应用场景视频播放
6.AVAudioSessionModeVideoChat
适用类别：
AVAudioSessionCategoryPlayAndRecord
应用场景视频通话
7.AVAudioSessionModeMeasurement
适用类别：
AVAudioSessionCategoryPlayAndRecord
AVAudioSessionCategoryRecord
AVAudioSessionCategoryPlayback
AVAudioSessionModeSpokenAudio
AVAudioSessionMode
1.AVAudioSessionCategoryOptionMixWithOthers
适用于：
AVAudioSessionCategoryPlayAndRecord
AVAudioSessionCategoryPlayback
AVAudioSessionCategoryMultiRoute
用于可以和其他app进行混音
2.AVAudioSessionCategoryOptionDuckOthers
适用于:
AVAudioSessionCategoryAmbient
AVAudioSessionCategoryPlayAndRecord
AVAudioSessionCategoryPlayback
AVAudioSessionCategoryMultiRoute
用于压低其他声音播放的音量，使期音量变小
3.AVAudioSessionCategoryOptionAllowBluetooth
适用于:
AVAudioSessionCategoryRecord and AVAudioSessionCategoryPlayAndRecord
用于是否支持蓝牙设备耳机等
4.AVAudioSessionCategoryOptionDefaultToSpeaker
适用于:
AVAudioSessionCategoryPlayAndRecord
用于将声音从Speaker播放，外放，即免提
5.AVAudioSessionCategoryOptionInterruptSpokenAudioAndMixWithOthers
适用于:
AVAudioSessionCategoryPlayAndRecord
AVAudioSessionCategoryPlayback
AVAudioSessionCategoryMultiRoute
6.AVAudioSessionCategoryOptionAllowBluetoothA2DP
适用于：
AVAudioSessionCategoryPlayAndRecord
蓝牙和a2dp
7.AVAudioSessionCategoryOptionAllowAirPlay
适用于：
AVAudioSessionCategoryPlayAndRecord
airplay 狂奔的胖蜗牛 关注
2017.05.01 15:41* 字数 97 阅读 4275评论 2喜欢 6
自己写的一个类，用于swift实现了录音与播放录制的音频的功能。详细的注意点见注释：
import Foundation
import AVFoundation
class RecordManager {
var recorder: AVAudioRecorder?
var player: AVAudioPlayer?
let file_path = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first?.appending("/record.wav")
//开始录音
func beginRecord() {
let session = AVAudioSession.sharedInstance()
//设置session类型
do {
try session.setCategory(AVAudioSessionCategoryPlayAndRecord)
} catch let err{
print("设置类型失败:\(err.localizedDescription)")
}
//设置session动作
do {
try session.setActive(true)
} catch let err {
print("初始化动作失败:\(err.localizedDescription)")
}
//录音设置，注意，后面需要转换成NSNumber，如果不转换，你会发现，无法录制音频文件，我猜测是因为底层还是用OC写的原因
let recordSetting: [String: Any] = [AVSampleRateKey: NSNumber(value: 16000),//采样率
AVFormatIDKey: NSNumber(value: kAudioFormatLinearPCM),//音频格式
AVLinearPCMBitDepthKey: NSNumber(value: 16),//采样位数
AVNumberOfChannelsKey: NSNumber(value: 1),//通道数
AVEncoderAudioQualityKey: NSNumber(value: AVAudioQuality.min.rawValue)//录音质量
];
//开始录音
do {
let url = URL(fileURLWithPath: file_path!)
recorder = try AVAudioRecorder(url: url, settings: recordSetting)
recorder!.preparetoRecord()
recorder!.record()
print("开始录音")
} catch let err {
print("录音失败:\(err.localizedDescription)")
}
}
//结束录音
func stopRecord() {
if let recorder = self.recorder {
if recorder.isRecording {
print("正在录音，马上结束它，文件保存到了：\(file_path!)")
}else {
print("没有录音，但是依然结束它")
}
recorder.stop()
self.recorder = nil
}else {
print("没有初始化")
}
}
//播放
func play() {
do {
player = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: file_path!))
print("歌曲长度：\(player!.duration)")
player!.play()
} catch let err {
print("播放失败:\(err.localizedDescription)")
}
}
}
使用的时候，只需要在要录音的地方导入该类，初始化后，使用即可
let recoder_manager = RecordManager()//初始化
recoder_manager.beginRecord()//开始录音
recoder_manager.stopRecord()//结束录音
recoder_manager.play()//播放录制的音频
将原生社交分享整合到应用中
import UIKit
import Social
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let serviceType = SLServiceTypeTwitter
if SLComposeViewController.isAvailable(forServiceType: serviceType) {
let controller = SLComposeViewController(forServiceType: serviceType)
controller?.setinitialText("设置想与别人分享的文字")
controller?.add(UIImage(named: "风向文章中附带的图片"))
controller?.add(NSURL(string: "为分享文字和图片添加一个URL")! as URL)
controller?.completionHandler = {
(result: SLComposeViewControllerResult) in
print("completed")
}
}
}
}
//
// ViewController.swift
// SwiftExample
//
// Created by administrator on 2019/2/15.
// copyright © 2019 administrator. All rights reserved.
//
import UIKit
import AVFoundation
class ViewController: UIViewController,AVAudioPlayerDelegate,AVAudioRecorderDelegate {
var audioPlayer: AVAudioPlayer?
var audioRecoder: AVAudioRecorder?
func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flay: Bool) {
print("Finish playing the song")
}
override func viewDidLoad() {
super.viewDidLoad()
dispatchQueue.global().async {[weak self] in
self?.playAudio()
}
let workItem = dispatchWorkItem{
self.playAudio()
}
dispatchQueue.global().async(execute: workItem)
//录音
let session = AVAudioSession.sharedInstance()
do {
if #available(iOS 10.0, *) {
try session.setCategory(.playAndRecord, mode: .default, options: .duckOthers)
} else {
try session.setMode(.default)
try session.setActive(true, options: .notifyOthersOnDeactivation)
}
session.requestRecordPermission { [weak self](allowed: Bool) in
if allowed {
self?.startRecordingAudio()
}else{
print("have no permission")
}
}
} catch let error as NSError {
print("error \(error)")
}
}
func playAudio() {
let mainBundle = Bundle.main
let filePath = mainBundle.path(forResource: "MySong", ofType: ".mp3")
if let path = filePath {
let fileData = NSData(contentsOf: URL(fileURLWithPath: path))
var error: NSError
do {
self.audioPlayer = try AVAudioPlayer(data: fileData! as Data)
// try AVAudioPlayer(contentsOf: URL(fileURLWithPath: path))
if let player = self.audioPlayer{
player.delegate = self
if player.preparetoPlay() && player.play(){
print("play success")
} else {
print("play failor")
}
}
}catch let error as NSError{
if error != nil{
print("创建播放器失败")
self.audioPlayer = nil
}
}
}
}
func audioRecodingPath() -> NSURL {
let fileManager = FileManager()
var documentsFolderUrl:URL?
do {
documentsFolderUrl = try fileManager.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
} catch let error as NSError {
print("error \(error)")
}
return documentsFolderUrl?.appendingPathComponent("recording.m4a") as! NSURL
}
func audioRecordingSettings() -> NSDictionary {
//音频录制选项
return [AVFormatIDKey : kAudioFormatMPEG4AAC,
AVSampleRateKey : 16000.0 as NSNumber,
AVNumberOfChannelsKey : 1 as NSNumber,
AVEncoderAudioQualityKey : AVAudioQuality.low.rawValue as NSNumber]
}
func startRecordingAudio() {
let audioRecordingURL = self.audioRecodingPath()
do {
audioRecoder = try AVAudioRecorder(url: audioRecordingURL as URL, settings: self.audioRecordingSettings() as! [String : Any])
if let recorder = audioRecoder {
recorder.delegate = self
if recorder.preparetoRecord() && recorder.record(){
let delayInSeconds = 5.0
dispatchQueue.main.asyncAfter(deadline: dispatchTime.Now() + delayInSeconds) {
self.audioRecoder?.stop()
}
// dispatchQueue.global().asyncAfter(deadline: dispatchTime.Now() + delayInSeconds){}
}else{
print("error")
}
}
} catch let error as NSError {
print("error \(error)")
}
}
}
