IOS开发实现录音功能

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

- (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 = [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);

}

以上是 IOS开发实现录音功能 的全部内容, 来源链接: utcz.com/z/314825.html

回到顶部