#import 
     
      #import 
      
       @interface ViewController : UIViewController
       
        {    BOOL _newRecordingAvailable;}@property (weak, nonatomic) IBOutlet UILabel *averageLabel;@property (weak, nonatomic) IBOutlet UILabel *peakLabel;@property (strong, nonatomic) AVAudioPlayer *player;@property (strong, nonatomic) AVAudioRecorder *recorder;@property (weak, nonatomic) IBOutlet UIButton *recordButton;@property (weak, nonatomic) IBOutlet UIButton *playButton;@property (strong, nonatomic) NSString *recordedFilePath;- (IBAction)toggleRecording:(id)sender;- (IBAction)togglePlaying:(id)sender;@end
       
      
     

#import "ViewController.h"@interface ViewController ()@end@implementation ViewController@synthesize recordButton = _recordButton;@synthesize playButton = _playButton;@synthesize averageLabel = _averageLabel;@synthesize peakLabel = _peakLabel;- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player withOptions:(NSUInteger)flags{    if (flags == AVAudioSessionInterruptionOptionShouldResume)    {        [player play];    }}- (void)audioRecorderEndInterruption:(AVAudioRecorder *)recorder withOptions:(NSUInteger)flags{    if (flags == AVAudioSessionInterruptionOptionShouldResume)    {        [recorder record];    }}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup dafter loading the view, typically from a nib.    self.recordedFilePath = [[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"recording.wav"];    NSURL *url = [[NSURL alloc] initFileURLWithPath:self.recordedFilePath];    NSError *error;    self.recorder = [[AVAudioRecorder alloc] initWithURL:url settings:nil error:&error];    if (error)    {        NSLog(@"Error initializing recorder: %@", error);    }    self.recorder.meteringEnabled = YES;    self.recorder.delegate = self;    [self.recorder prepareToRecord];        [NSTimer scheduledTimerWithTimeInterval:0.01 target:self selector:@selector(updateLabels) userInfo:nil repeats:YES];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (IBAction)toggleRecording:(id)sender{    if ([self.recorder isRecording])    {        [self.recorder stop];        [self.recordButton setTitle:@"Record" forState:UIControlStateNormal];    }    else    {        [self.recorder record];        [self.recordButton setTitle:@"Stop" forState:UIControlStateNormal];    }}- (IBAction)togglePlaying:(id)sender{    if (self.player.playing)    {        [self.player pause];        [self.playButton setTitle:@"Play" forState:UIControlStateNormal];    }    else if (_newRecordingAvailable)    {        NSURL *url = [[NSURL alloc] initFileURLWithPath:self.recordedFilePath];        NSError *error;        self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];        if (!error)        {            self.player.delegate = self;            [self.player play];        }        else        {            NSLog(@"Error initializing player: %@", error);        }        [self.playButton setTitle:@"Pause" forState:UIControlStateNormal];        _newRecordingAvailable = NO;    }    else if (self.player)    {        [self.player play];        [self.playButton setTitle:@"Pause" forState:UIControlStateNormal];    }}-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{    [self.playButton setTitle:@"Play" forState:UIControlStateNormal];}- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{    _newRecordingAvailable = flag;    [self.recordButton setTitle:@"Record" forState:UIControlStateNormal];}-(void)updateLabels{    [self.recorder updateMeters];    self.averageLabel.text = [NSString stringWithFormat:@"%f", [self.recorder averagePowerForChannel:0]];    self.peakLabel.text = [NSString stringWithFormat:@"%f", [self.recorder peakPowerForChannel:0]];}@end