以下の設定で録音できます-最初は動作しますが、再試行すると、ファイルは常に8192バイトになります。つまり、正しく録音されません。
-(void) startRecording
{
NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithFloat: 11025.0f], AVSampleRateKey,
[NSNumber numberWithInt: kAudioFormatMPEG4AAC], AVFormatIDKey,
[NSNumber numberWithInt: 2], AVNumberOfChannelsKey,
[NSNumber numberWithInt: AVAudioQualityLow], AVEncoderAudioQualityKey,
nil];
NSString *filenameBasedOnTime = [[NSDate date] description];
if (_recordedFileURL) _recordedFileURL = nil;
_recordedFileURL = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingString:filenameBasedOnTime]];
NSError* error;
if (_audioRecorder) _audioRecorder = nil;
_audioRecorder = [[AVAudioRecorder alloc] initWithURL:_recordedFileURL settings:settings error:&error];
_audioRecorder.delegate = self;
if (error)
{
return;
}
[_audioRecorder prepareToRecord];
_audioRecorder.meteringEnabled = YES;
[_audioRecorder record];
}
-(void) stopRecord
{
[_audioRecorder stop];
}
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag
{
[self saveRecording];
}
-(void) saveRecording
{
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:_recordedFileURL.relativeString]];
NSLog(@"Recording data size = %i", [data length]);
}
それが役立つ場合は、UIPopoverController内で呼び出されます...