IOS开发实现录音功能

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导入框架:

#import <AVFoundation/AVFoundation.h>

声明全局变量:

@interface ViewController ()<AVAudioRecorderDelegate>
{
   AVAudioRecorder *audioRecorder;
}
@end

在ViewDidLoad中:

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
  button.frame = CGRectMake(100, 100, 100, 100);
  [button setTitle:@ "TICK" forState:UIControlStateNormal];
  button.backgroundColor = [UIColor brownColor];
  [button addTarget:self action:@selector(startAudioRecoder:) forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:button];

按钮的触发事件:

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 = [NSString stringWithFormat:@ "%d.aiff" ,( int )[NSDate date].timeIntervalSince1970];
       
       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);

代理方法:

- ( 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:@ "aiff" ]) {
//      把筛选出来的文件放到数组中
       [audioPathList addObject:audioPath];
     }
   }
   
   NSLog(@ "%@" ,audioPathList);
   
}

原文作者:复杂化
原文地址:https://blog.csdn.net/m0_46110288/article/details/110572498?ops_request_misc=%25257B%252522request%25255Fid%252522%25253A%252522160743835219725211951213%252522%25252C%252522scm%252522%25253A%25252220140713.130102334.pc%25255Fall.%252522%25257D&request_id=160743835219725211951213&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2allfirst_rank_v2~rank_v29-6-110572498.pc_search_result_cache&utm_term=iOS%E5%BC%80%E5%8F%91

posted @ 2020-12-08 22:57  iOS发呆君  阅读(1588)  评论(0编辑  收藏  举报