一添加权限
NSMicrophoneUsageDescription
二导入框架
AVFoundation.framework
三.m中
#import <AVFoundation/AVFoundation.h>
@interface ViewController () <AVAudioRecorderDelegate>
{
AVAudioRecorder *audioRecorder;
AVAudioPlayer *player;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIButton *buttonOne = [UIButton buttonWithType:UIButtonTypeCustom];
buttonOne.frame = CGRectMake(100, 100, 100, 100);
[buttonOne setTitle:@"TICK" forState:UIControlStateNormal];
buttonOne.backgroundColor = [UIColor brownColor];
[buttonOne addTarget:self action:@selector(startAudioRecoder:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonOne];
UIButton *buttonTwo = [UIButton buttonWithType:UIButtonTypeCustom];
buttonTwo.frame = CGRectMake(100, 300, 100, 100);
[buttonTwo setTitle:@"播放" forState:UIControlStateNormal];
buttonTwo.backgroundColor = [UIColor redColor];
[buttonTwo addTarget:self action:@selector(startPlayer:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:buttonTwo];
}
- (void)startAudioRecoder:(UIButton *)sender{
sender.selected = !sender.selected;
if (sender.selected != YES) {
[audioRecorder stop];
return;
}
// URL是本地的URL AVAudioRecorder需要一个存储的路径
NSString *name = @"a.lyj";
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:name];
NSError *error;
// 录音机 初始化
audioRecorder = [[AVAudioRecorder alloc]initWithURL:[NSURL fileURLWithPath:path] settings:@{AVNumberOfChannelsKey:@2,AVSampleRateKey:@44100,AVLinearPCMBitDepthKey:@32,AVEncoderAudioQualityKey:@(AVAudioQualityMax),AVEncoderBitRateKey:@128000} error:&error];
[audioRecorder prepareToRecord];
[audioRecorder record];
audioRecorder.delegate = self;
/*
1.AVNumberOfChannelsKey 通道数 通常为双声道 值2
2.AVSampleRateKey 采样率 单位HZ 通常设置成44100 也就是44.1k
3.AVLinearPCMBitDepthKey 比特率 8 16 24 32
4.AVEncoderAudioQualityKey 声音质量
① AVAudioQualityMin = 0, 最小的质量
② AVAudioQualityLow = 0x20, 比较低的质量
③ AVAudioQualityMedium = 0x40, 中间的质量
④ AVAudioQualityHigh = 0x60,高的质量
⑤ AVAudioQualityMax = 0x7F 最好的质量
5.AVEncoderBitRateKey 音频编码的比特率 单位Kbps 传输的速率 一般设置128000 也就是128kbps
*/
NSLog(@"%@",path);
}
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{
NSLog(@"录音结束");
// 文件操作的类
NSFileManager *manger = [NSFileManager defaultManager];
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];
// 获得当前文件的所有子文件subpathsAtPath
NSArray *pathlList = [manger subpathsAtPath:path];
// 需要只获得录音文件
NSMutableArray *audioPathList = [NSMutableArray array];
// 遍历所有这个文件夹下的子文件
for (NSString *audioPath in pathlList) {
// 通过对比文件的延展名（扩展名 尾缀） 来区分是不是录音文件
if ([audioPath.pathExtension isEqualToString:@"lyj"]) {
// 把筛选出来的文件放到数组中
[audioPathList addObject:audioPath];
}
}
NSLog(@"%@",audioPathList);
}
-(void)startPlayer:(UIButton *)btn{
NSString *name = @"a.lyj";
NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:name];
NSData *data = [[NSData data]initWithContentsOfFile:path];
player = [[AVAudioPlayer alloc]initWithData:data error:nil];
//设置是否可以倍速（或者放慢速度）播放
player.enableRate = YES;
//设置播放速度 一般0.5-2.0
player.rate = 0.5;
[player play];
}
