iOS 录音简单使用

创建录音对象

 // 1.创建沙盒路径
 NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
        
 // 2.拼接音频文件
 NSString *filePath = [path stringByAppendingPathComponent:@"录音文件.caf"];
        
 // 3.转化成url file://
 NSURL *url = [NSURL fileURLWithPath:filePath];
        
 // 4.设置录音的参数
 NSDictionary *settingRecorder = @{
                                   AVEncoderAudioQualityKey : [NSNumber numberWithInteger:AVAudioQualityLow],
                                   AVEncoderBitRateKey : [NSNumber numberWithInteger:16],
                                   AVSampleRateKey : [NSNumber numberWithFloat:8000],
                                   AVNumberOfChannelsKey : [NSNumber numberWithInteger:2]
                                   };
        
        
  // 5.创建录音对象
  self.recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settingRecorder error:nil];

开始录音

[self.recorder record];

结束录音

[self.recorder stop];