IOS開發實現錄音功能

標籤：

匯入架構：

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1	#import <AVFoundation/AVFoundation.h>

聲明全域變數：

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12345

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

在ViewDidLoad中：

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123456

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];

按鈕的觸發事件

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- (void)startAudioRecoder:(UIButton *)sender{  sender.selected = !sender.selected;  if (sender.selected != YES) {    [audioRecorder stop];    return;  }     //  URL是本地的URL AVAudioRecorder需要一個儲存的路徑  NSString *name = [NSString stringWithFormat:@"%d.aiff",(int)[NSDate date].timeIntervalSince1970];     NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:name];  NSError *error;  //  錄音機 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 通道數 通常為雙聲道 值2   2.AVSampleRateKey 採樣率 單位HZ 通常設定成44100 也就是44.1k   3.AVLinearPCMBitDepthKey 位元速率 8 16 24 32   4.AVEncoderAudioQualityKey 聲音品質       ① AVAudioQualityMin  = 0, 最小的品質       ② AVAudioQualityLow  = 0x20, 比較低的品質       ③ AVAudioQualityMedium = 0x40, 中間的品質       ④ AVAudioQualityHigh  = 0x60,高的品質       ⑤ AVAudioQualityMax  = 0x7F 最好的品質   5.AVEncoderBitRateKey 音頻編碼的位元速率 單位Kbps 傳輸的速率 一般設定128000 也就是128kbps       */           NSLog(@"%@",path); }

代理方法：

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- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{  NSLog(@"錄音結束");//  檔案操作的類 NSFileManager *manger = [NSFileManager defaultManager];   NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];//  獲得當前檔案的所有子檔案subpathsAtPath  NSArray *pathlList = [manger subpathsAtPath:path]; //  需要只獲得錄音檔案  NSMutableArray *audioPathList = [NSMutableArray array];//  遍曆所有這個檔案夾下的子檔案  for (NSString *audioPath in pathlList) {//    通過對比檔案的延展名（副檔名 尾綴） 來區分是不是錄音檔案    if ([audioPath.pathExtension isEqualToString:@"aiff"]) {//      把篩選出來的檔案放到數組中      [audioPathList addObject:audioPath];    }  }     NSLog(@"%@",audioPathList);   }

IOS開發實現錄音功能