Record and Play Audio Files iOS

// Note: Add AVFoundation framework to your project

#pragma mark - .h file

#import <AVFoundation/AVFoundation.h>

// Implement this delegate : AVAudioRecorderDelegate

AVAudioRecorder *recorder;

#pragma mark - .m file

// Configure audio recorder
-(void)configureAudioRecorder {
    NSArray *searchPaths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentPath_ = [searchPaths objectAtIndex: 0];

    // Don't change the file extension
    NSString *soundFilePath = [documentPath_ stringByAppendingPathComponent:@"your_file_name_here.m4a"];

    NSURL *outputFileURL = [NSURL fileURLWithPath:soundFilePath];

    // Setup audio session
    AVAudioSession *session = [AVAudioSession sharedInstance];
    [session setCategory:AVAudioSessionCategoryRecord error:nil];
    [session setActive:YES error:nil];

    [session requestRecordPermission:^(BOOL granted) {
        if (granted) {
            // Define the recorder setting
            NSDictionary *recordSettings = @{AVFormatIDKey: @(kAudioFormatMPEG4AAC),
                                             AVEncoderAudioQualityKey: @(AVAudioQualityLow),
                                             AVNumberOfChannelsKey: @1,
                                             AVSampleRateKey: @22050.0f};

            // Initiate and prepare the recorder
            NSError *error;
            recorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSettings error:&error];

            if (!error) {
                recorder.delegate = self;
                [recorder prepareToRecord];

                // Start recording
                [recorder record];

                NSLog(@"Record Start");
            } else {
                NSLog(@"%@", error.description);
            }
        } else {
            NSLog(@"Permission to record audio denied");
        }
    }];
}

// Call "configureAudioRecorder" in your record button

// In your "pause/stop" button call
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setActive:NO error:nil];

[recorder stop];

// Implement the delegate method
-(void)audioRecorderDidFinishRecording:(AVAudioRecorder *)avrecorder successfully:(BOOL)flag {
   // if flag param equals to YES your file is saved successfull in : avrecorder.url.absoluteString
}

// ===================================================================================================== //

// To Play File Saved after Recording
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
[session setActive:YES error:nil];

NSURL *filePath = [NSURL URLWithString:@"path to your saved file. ex: avrecorder.url.absoluteString"];

AVPlayer *avPlayer = [AVPlayer playerWithURL:filePath];

AVPlayerViewController *controller = [[AVPlayerViewController alloc] init];
controller.player = avPlayer;

[self presentViewController:controller animated:YES completion:^{
    [avPlayer play];
}];