Error in Console: "Failed to write audio data to recorded audio file (-38)"

[starkshaw]

Hi, I received some error when I trying to use the recorder feature of EZAudio in my app. It says "Error: Failed to write audio data to recorded audio file (-38)", then I put a try-catch clause to see what the real problem is. But it never works, the app just crashes. It is hard to replicate the error because it happens very random but it will happen somehow. My app only requires few seconds of recording so I don't know if the memory will be an issue.

Here's the code for the recorder:

- (IBAction)toggleMicButton:(id)sender {
    if (self.isMicOn) {
        @try{
            [self.recorder closeAudioFile];
            [self.microphone stopFetchingAudio];
            self.microphoneTextLabel.text = @"Analyzing";
            [self.audioPlot clear];
            self.isMicOn = NO;
            self.isRecording = NO;
            [self aubiopitch];
            self.microphoneTextLabel.text = @"";
        } @catch (NSException *exception) {
            UIAlertController *errorMsg = [UIAlertController
                                           alertControllerWithTitle:@"Error"
                                           message: exception.reason
                                           preferredStyle:UIAlertControllerStyleAlert];
            [self presentViewController:errorMsg animated:YES completion:nil];
            NSLog(@"%@", exception.reason);
        }
    } else {
        @try {
            [self.microphone startFetchingAudio];
            self.microphoneTextLabel.text = @"Listening";
            self.recorder = [EZRecorder recorderWithURL:[self filePathURL]
                                           clientFormat:[self.microphone audioStreamBasicDescription]
                                               fileType:EZRecorderFileTypeWAV];
            self.isMicOn = YES;
            self.isRecording = YES;
        } @catch (NSException *exception) {
            UIAlertController *errorMsg = [UIAlertController
                                           alertControllerWithTitle:@"Error"
                                           message: exception.reason
                                           preferredStyle:UIAlertControllerStyleAlert];
            [self presentViewController:errorMsg animated:YES completion:nil];
            NSLog(@"%@", exception.reason);
        }
    }
}

That [self aubiopitch] is a process to analysis the just-saved wav file.

[glm4]

For me, the problem was causing by appending buffer to the recorder after the closeFile(). Check out the example, they use an isRecording var to control this. Hope it helps