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