通过AVAudioRecorder录制声音
通过AVAudioRecorder录制声音
提问于 2013-03-14 17:49:08
我想录制声音，并想将录制的文件保存到文档目录中：- Had如下所示：-
[[AVAudioSession sharedInstance]
setCategory: AVAudioSessionCategoryRecord
error: nil];
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleIMA4] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
recorderFilePath = [[NSString stringWithFormat:@"%@/Audio.caf", DOCUMENTS_FOLDER] retain];
NSURL *soundFileURL=[NSURL URLWithString:recorderFilePath];
recorderFilePath = [[NSString stringWithFormat:@"%@/Audio.caf", DOCUMENTS_FOLDER] retain];
NSURL *soundFileURL = [NSURL fileURLWithPath:recorderFilePath];
NSLog(@"str==>%@ soundurl==>%@",recorderFilePath,soundFileURL);
AVAudioRecorder *newRecorder =
[[AVAudioRecorder alloc] initWithURL: url
settings: settings
error: nil];
newRecorder.delegate = self;
[newRecorder prepareToRecord];
[newRecorder record];并且记录器停止；当停止记录完成时。
看过这个:- this
我仍然不能在accordingly..But文件夹中创建任何.caf文件。
回答 1
Stack Overflow用户
回答已采纳
发布于 2013-03-14 18:13:41
一旦通过下面的代码，它可能会对你有所帮助。首先将录音器的对象作为AVAudioRecorder * AVAudioRecorder；
-(void)viewWillAppear:(BOOL)animated{
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
//here i took cache directory as saved directory you can also take NSDocumentDirectory
docsDir = [dirPaths objectAtIndex:0];
NSString *soundFilePath = [docsDir stringByAppendingPathComponent:@"sound.caf"];//at this path your recorded audio will be saved
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
NSDictionary *recordSettings = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt:AVAudioQualityMin],
AVEncoderAudioQualityKey,
[NSNumber numberWithInt:16],
AVEncoderBitRateKey,
[NSNumber numberWithInt: 2],
AVNumberOfChannelsKey,
[NSNumber numberWithFloat:44100.0],
AVSampleRateKey,
nil];
NSError *error = nil;
audioRecorder = [[AVAudioRecorder alloc]initWithURL:soundFileURL settings:recordSettings error:&error];
if( !audioRecorder ) {
UIAlertView *alert =
[[UIAlertView alloc] initWithTitle: @"Warning" message: [error localizedDescription] delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
return;
}
if ( error )
{
NSLog( @"error: %@", [error localizedDescription] );
}
else {
[audioRecorder prepareToRecord];
[self recordAudio];//Mehod to Record Audio
}
}现在定义录制音频的方法，
-(void) recordAudio
{
if (!audioRecorder.recording)
{
audioRecorder.delegate = self;
[audioRecorder recordForDuration:10];//Here i took record duration as 10 secs
}}
现在您可以将AvAudio记录DelegateMethods编写为，
-(void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully: (BOOL)flag
{
//Your code after sucessful recording;
}
-(void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError *)error
{
NSLog(@"Encode Error occurred");
}希望它能对你有所帮助。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/15405859
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