Question

How do you record an audio in a view and getting the saved audio file after popping out in the parent view?

I am using embedded navigation controller in storyboard.

I have this code in my child view.

NSArray *dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *docsDir = [dirPaths objectAtIndex:0];

tempFilePath = [NSURL fileURLWithPath:[docsDir stringByAppendingPathComponent:[NSString stringWithFormat: @"record.%@", @"caf"]]];


NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatAppleIMA4] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey]; 
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];


audioRecorder = [[ AVAudioRecorder alloc] initWithURL:tempFilePath settings:recordSetting error:nil];
[audioRecorder setDelegate:self];

[audioRecorder prepareToRecord];

[audioRecorder record];

Now, how am I gonna get that in my parent controller?

Answer 1

If you have one view controller recording audio, that view controller should save the audio before it gets dismissed.

And you should save it to a consistent place (e.g. a cache directory, a documents directory, whatever). And if you give it a predictable filename, you can have your parent view controller easily locate it to load it up again when needed.

Alternatively, you could get a handle to your parent view controller from the navigation controller and pass along either the path to the written out audio data (or a URL), or the raw audio NSData object itself. It all depends on how you’ve implemented your code.