audioRecorderDidFinishRecording 的问题：成功：

Question

我面临这个问题：

我使用 iPhone 麦克风录制一些音频并将其上传到我的服务器。我记录例如40秒，并在41秒（计时器）后调用上传函数。现在，上传到服务器的录制文件不是完整文件，因为

audioRecorderDidFinishRecording:  successfully:  

在调用 upload 函数之前未调用该函数。它仅在调用 upload 函数之后调用 - 无论我何时调用 upload 函数 - 10 秒后或 100 秒后。

在上传功能中，我使用ASIHTTPRequest和ASIFormDataRequest来上传文件。

谁能告诉我为什么会发生这种情况？谢谢。

编辑#1： 如果未调用 upload 方法，则永远不会调用 audioRecorderDidFinishRecording: successed: 方法。很奇怪！

编辑#2：

相关方法：

(void) upload
{


NSString *urlString = @"<SOME_LINK>";
NSURL *url=[NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];  
ASIFormDataRequest *request=[ASIFormDataRequest requestWithURL:url];

NSData *fileData=[NSData dataWithContentsOfURL:recordedTmpFile];
[request setData:fileData withFileName:[fileName copy] andContentType:@"audio/x-caf" forKey:@"userfile"];
[request setPostValue:[appDelegate getRandomXML] forKey:@"random"];
[request setRequestMethod:@"POST"];
[request setDelegate:self];



[request setShouldContinueWhenAppEntersBackground:YES];
[request startSynchronous];

}




- (void) record
{
NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleLossless] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey]; 
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

NSDateFormatter *formatter=[[NSDateFormatter alloc]init];
[formatter setDateFormat:@"hh:mm:ss"];
NSString *dateString=[formatter stringFromDate:[NSDate date]];

fileName=[@"recordTest" stringByAppendingFormat:@"%@.alac", dateString];

[formatter release];


NSString *documentDirectory=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];

NSString *mediaPath=[documentDirectory stringByAppendingPathComponent:[fileName copy]];

NSString *mediaPathFinal=[NSString stringWithFormat:@"file://localhost%@",mediaPath];

recordedTmpFile = [NSURL URLWithString:[mediaPathFinal stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
recorder = [[ AVAudioRecorder alloc] initWithURL:recordedTmpFile settings:recordSetting error:&error];

recorder.delegate=self;


[recorder recordForDuration:(NSTimeInterval) ([[appDelegate getTimeToRecord] intValue]+1)];

}

- (void) audioRecorderDidFinishRecording:(AVAudioRecorder *) recorder  successfully:(BOOL)flag
{
NSLog(@"DONE");
}

- (void) audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *) recorder error:(NSError *) error
{
NSLog(@"ERROR");
}


- (void) viewWillAppear:(BOOL)animated
{


AVAudioSession * audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error: &error];

[audioSession setActive:YES error: &error];
[audioSession setDelegate:self];

[self record];
[NSTimer scheduledTimerWithTimeInterval:([[appDelegate getTimeToRecord] intValue]+1) target:self selector:@selector(upload) userInfo:nil repeats:NO];


}

Answer 1

您应该在 audioRecorderDidFinishRecording:successively: 中调用 -upload 方法，而不是在 viewWillAppear: 中。