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#import "RecordViewController.h"
#import
#define kRecordAudioFile @"myRecord.caf"@interface RecordViewController ()
@property (nonatomic,strong) AVAudioRecorder *audioRecorder;
//音频录音机
@property (nonatomic,strong) AVAudioPlayer *audioPlayer;
//音频播放器，用于播放录音文件
@property (nonatomic,strong) NSTimer *timer;
//录音声波监控（注意这里暂时不对播放进行监控）@property (strong, nonatomic) UIButton *record;
//开始录音
@property (strong, nonatomic) UIButton *pause;
//暂停录音
@property (strong, nonatomic) UIButton *resume;
//恢复录音
@property (strong, nonatomic) UIButton *stop;
//停止录音
@property (strong, nonatomic) UIProgressView *audioPower;
//音频波动
@end@implementation RecordViewController- (void)viewDidLoad {
[super viewDidLoad];
[self createSub];
[self setAudioSession];
}- (void)createSub {
//录音
self.record = [UIButton buttonWithType:UIButtonTypeSystem];
self.record.frame = CGRectMake(10, 500, 60, 40);
self.record.backgroundColor = [UIColor orangeColor];
[self.record setTitle:@"录音" forState:UIControlStateNormal];
[self.record addTarget:self action:@selector(record:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.record];
//暂停
self.pause = [UIButton buttonWithType:UIButtonTypeSystem];
self.pause.frame = CGRectMake(80, 500, 60, 40);
self.pause.backgroundColor = [UIColor orangeColor];
[self.pause setTitle:@"暂停" forState:UIControlStateNormal];
[self.pause addTarget:self action:@selector(pause:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.pause];
//回复
self.resume = [UIButton buttonWithType:UIButtonTypeSystem];
self.resume.frame = CGRectMake(150, 500, 60, 40);
self.resume.backgroundColor = [UIColor orangeColor];
[self.resume setTitle:@"恢复" forState:UIControlStateNormal];
[self.resume addTarget:self action:@selector(resume:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.resume];
//停止
self.stop = [UIButton buttonWithType:UIButtonTypeSystem];
self.stop.frame = CGRectMake(220, 500, 60, 40);
self.stop.backgroundColor = [UIColor orangeColor];
[self.stop setTitle:@"停止" forState:UIControlStateNormal];
[self.stop addTarget:self action:@selector(stop:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:self.stop];
self.audioPower = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];
self.audioPower.frame = CGRectMake(20, 200, 100, 5);
self.audioPower.progressTintColor = [UIColor orangeColor];
self.audioPower.trackTintColor = [UIColor blueColor];
[self.view addSubview:self.audioPower];
}#pragma mark - 私有方法
/**
*设置音频会话
*/
-(void)setAudioSession{
AVAudioSession *audioSession=[AVAudioSession sharedInstance];
//设置为播放和录音状态，以便可以在录制完之后播放录音
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];
}/**
*取得录音文件保存路径
*
*@return 录音文件路径
*/
-(NSURL *)getSavePath{
NSString *urlStr=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
urlStr=[urlStr stringByAppendingPathComponent:kRecordAudioFile];
NSLog(@"file path:%@",urlStr);
NSURL *url=[NSURL fileURLWithPath:urlStr];
return url;
}/**
*取得录音文件设置
*
*@return 录音设置
*/
-(NSDictionary *)getAudioSetting{
NSMutableDictionary *dicM=[NSMutableDictionary dictionary];
//设置录音格式
[dicM setObject:@(kAudioFormatLinearPCM) forKey:AVFormatIDKey];
//设置录音采样率，8000是电话采样率，对于一般录音已经够了
[dicM setObject:@(8000) forKey:AVSampleRateKey];
//设置通道,这里采用单声道
[dicM setObject:@(1) forKey:AVNumberOfChannelsKey];
//每个采样点位数,分为8、16、24、32
[dicM setObject:@(8) forKey:AVLinearPCMBitDepthKey];
//是否使用浮点数采样
[dicM setObject:@(YES) forKey:AVLinearPCMIsFloatKey];
//....其他设置等
return dicM;
}/**
*获得录音机对象
*
*@return 录音机对象
*/
-(AVAudioRecorder *)audioRecorder{
if (!_audioRecorder) {
//创建录音文件保存路径
NSURL *url = [self getSavePath];
//创建录音格式设置
NSDictionary *setting = [self getAudioSetting];
//创建录音机
NSError *error = nil;
_audioRecorder=[[AVAudioRecorder alloc]initWithURL:url settings:setting error:&error];
_audioRecorder.delegate = self;
_audioRecorder.meteringEnabled=YES;
//如果要监控声波则必须设置为YES
if (error) {
NSLog(@"创建录音机对象时发生错误，错误信息：%@",error.localizedDescription);
return nil;
}
}
return _audioRecorder;
}/**
*创建播放器
*
*@return 播放器
*/
-(AVAudioPlayer *)audioPlayer{
if (!_audioPlayer) {
NSURL *url = [self getSavePath];
NSError *error=nil;
_audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error];
_audioPlayer.numberOfLoops=0;
[_audioPlayer prepareToPlay];
if (error) {
NSLog(@"创建播放器过程中发生错误，错误信息：%@",error.localizedDescription);
return nil;
}
}
return _audioPlayer;
}/**
*录音声波监控定制器
*
*@return 定时器
*/
-(NSTimer *)timer{
if (!_timer) {
_timer=[NSTimer scheduledTimerWithTimeInterval:0.1f target:self selector:@selector(audioPowerChange) userInfo:nil repeats:YES];
}
return _timer;
}/**
*录音声波状态设置
*/
-(void)audioPowerChange{
[self.audioRecorder updateMeters];
//更新测量值
float lowPassResults = pow(10, (0.05 * [self.audioRecorder peakPowerForChannel:0]));
NSLog(@"%.2f", lowPassResults);
CGFloat pro = 0;
if (0
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