- 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)")
}
}
}
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