問題audioRecorderDidFinishRecording：成功：

Question

我面臨這個問題：

我使用iPhone的麥克風記錄一些聲音並把它上傳到我的服務器。我說的是record，40秒並且在41秒（定時器）之後調用upload函數。現在，被上傳到服務器的記錄文件是不是因爲功能

audioRecorderDidFinishRecording: successfully: 

完整的文件是不是叫我之前所說的upload功能。它只在upload函數被調用後才被調用 - 無論我何時調用upload函數 - 10秒後或100秒後。

在上傳功能中，我使用ASIHTTPRequest和ASIFormDataRequest來上傳文件。

任何人都可以告訴我爲什麼會發生這種情況嗎？謝謝。

編輯＃1： 如果沒有調用upload方法，則永遠不會調用audioRecorderDidFinishRecording: successfully:方法。很奇怪！

編輯＃2：

相關方法：

(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

你應該調用-upload方法內audioRecorderDidFinishRecording:successfully:而不是viewWillAppear:。