используя раскадровку, как играть в AVAudioPlayer

Я разрабатываю AVAudioPlayer в соответствии с требованиями моего проекта. В аудиоплеере я использую раскадровку для разработки кодирования. В моем аудиоплеере используется синтаксический анализатор json для извлечения URL-адресов с сервера. И, наконец, я дал соединения от первого ответчика к Audioviewcontroller. Я могу запустить аудиоплеер. Аудиоплеер успешно воспроизводится. Но вид не будет отображаться. Будет отображаться пустой экран. Я могу перетаскивать все кнопки, такие как кнопка воспроизведения, кнопка паузы, кнопка вперед и кнопка перемотки назад и т. д. Эти кнопки перетаскиваются на AudioviewController. И также дайте соединения. Все эти кнопки не отображаются на Audioviewcontroller для воспроизведения соответствующей песни. Пожалуйста, помогите мне с любым органом, в чем проблема. Я новичок в программировании iOS. Заранее спасибо...

Audioviewcontroller.m

-(void)updateCurrentTimeForPlayer:(AVAudioPlayer *)
{
    currentTime.text = [NSString stringWithFormat:@"%d:%02d", (int)p.currentTime / 60, (int)p.currentTime % 60, nil];
    progressBar.value = p.currentTime;
}

-(void)updateCurrentTime
{
    [self updateCurrentTimeForPlayer:self.avPlayer];
}

-(void)updateViewForPlayerState:(AVAudioPlayer *)p
{
    [self updateCurrentTimeForPlayer:p];
    if (updateTimer) 
       [updateTimer invalidate];
    if (p.playing) 
    {
        [playButton setImage:(p.playing==YES)? pauseButtonBG:playButtonBG forState:UIControlStateNormal];
        updateTimer=[NSTimer scheduledTimerWithTimeInterval:.01 target:self selector:@selector(updateCurrentTime) userInfo:p repeats:YES];
    }
    else
    {
        [playButton setImage:(p.playing==YES)? pauseButtonBG:playButtonBG forState:UIControlStateNormal];
        updateTimer=nil;
    }
}

-(void)updateViewForPlayerStateInBackground:(AVAudioPlayer *)p
{
    [self updateCurrentTimeForPlayer:p];
    if (p.playing) 
    {
        [playButton setImage:(p.playing==YES)? pauseButtonBG:playButtonBG forState:UIControlStateNormal];
    }
    else
    {
        [playButton setImage:(p.playing==YES)? pauseButtonBG:playButtonBG forState:UIControlStateNormal];
    }
}

-(void)updateViewForPlayerInfo:(AVAudioPlayer*)p
{
    duration.text = [NSString stringWithFormat:@"%d:%02d", (int)p.duration / 60, (int)p.duration % 60, nil];
    progressBar.maximumValue = p.duration;
    volumeSlider.value = p.volume;
}

// rewind audio player
-(void)rewind
{
    AVAudioPlayer *p=rewindTimer.userInfo;
    p.currentTime-=SKIP_TIME;
    [self updateCurrentTimeForPlayer:p];
}

// forward audio player
-(void)forward
{
    AVAudioPlayer *p=forwardTimer.userInfo;
    p.currentTime+=SKIP_INTERVAL;
    [self updateCurrentTimeForPlayer:p];
}

json parser::
-(void)loadData
{
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.teluguastrology.com"]];
    [[NSURLConnection alloc] initWithRequest:request delegate:self];
}

// delegate methods in json
-(void)connection:(NSURLConnection *)connectiondidReceiveResponse:(NSURLResponse *)response

{
    [_data setLength:0];
    NSLog(@"didReceiveResponse called");
}

//connection did receive data
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSMutableData *)data
{
    [_data appendData:data];
}

// connection did finish loading
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    NSError *jsonError = nil;
    id jsonObject = [NSJSONSerialization JSONObjectWithData:_data options:kNilOptions error:&jsonError];

    if ([jsonObject isKindOfClass:[NSArray class]]) 
    {
        //NSArray *jsonArray = (NSArray *)jsonObject;
    }
    else if ([jsonObject isKindOfClass:[NSDictionary class]])
    {
        NSDictionary *jsonDictionary = (NSDictionary *)jsonObject;

        NSArray *array=[[NSArray alloc]init];
        array=[jsonDictionary objectForKey:@"audio-urls"];

        dataDictionary=[array objectAtIndex:0];
        /* NSLog(@"%@",dataDictionary);*/
    }

    [urlsArray addObject:[dataDictionary objectForKey:@"Meshamu-Aries"]];
    NSLog(@"%@",urlsArray);


- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
//  [connection release];
    NSLog(@"didFailWithError called");
}

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
    // self.view.backgroundColor=[UIColor redColor];
    urlsArray=[[NSMutableArray alloc]init];
    [super viewDidLoad];

    playButtonBG=[[UIImage imageNamed:@"audio_play.png"]init];
    pauseButtonBG=[[UIImage imageNamed:@"audio_pause.png"]init];
    [playButton setImage:playButtonBG forState:UIControlStateNormal];
    //[self registerForBackGroundNotification];
    updateTimer=nil;
    rewindTimer=nil;
    forwardTimer=nil;
    // to adjust the font in label to using following method
    duration.adjustsFontSizeToFitWidth=YES;
    currentTime.adjustsFontSizeToFitWidth=YES;
    progressBar.minimumValue=0.0;

    _data=[[NSMutableData alloc]init];

    [self loadData];
    backgroundImg=[[UIImageView alloc]init];
    backgroundImg.image=[UIImage imageNamed:@"image.png"];
    [self.view addSubview:backgroundImg];    
}

-(void)pausePlaybackForPlayer:(AVAudioPlayer *)p
{
    [p pause];
    [self updateViewForPlayerState:p];
}

-(void)startPlaybackForPlayer:(AVAudioPlayer *)p
{
    if([p play]) 
    {
        [self updateViewForPlayerState:p];
    }
    else
        NSLog(@"Could not play %@\n", p.url);
}

-(IBAction)playButtonPressed:(UIButton *)sender
{
    if (avPlayer.playing==YES) 
        [self pausePlaybackForPlayer:avPlayer];
    else
        [self startPlaybackForPlayer:avPlayer];
}

-(IBAction)rewindButtonPressed:(UIButton *)sender
{
    if(rewindTimer) 
    [rewindTimer invalidate];
    rewindTimer=[NSTimer scheduledTimerWithTimeInterval:SKIP_INTERVAL target:self selector:@selector(rewind) userInfo:avPlayer repeats:YES];
}

-(IBAction)rewindButtonReleased:(UIButton *)sender
{
    if(rewindTimer) 
        [rewindTimer invalidate];

    rewindTimer=nil;
}

-(IBAction)forwardButtonPressed:(UIButton *)sender
{
    if(forwardTimer) 
        [forwardTimer invalidate];

    forwardTimer=[NSTimer scheduledTimerWithTimeInterval:SKIP_TIME target:self selector:@selector(forward) userInfo:avPlayer repeats:YES];
}

-(IBAction)forwardButtonReleased:(UIButton *)sender
{
    if(forwardTimer) 
    [forwardTimer invalidate];
    forwardTimer=nil;
}

-(IBAction)volumeSliderMoved:(UISlider *)sender
{
    avPlayer.volume=[sender value];
}

-(IBAction)progressBarMoved:(UISlider *)sender
{
    avPlayer.currentTime=[sender value];
    [self updateCurrentTimeForPlayer:avPlayer];
}

Audioviewcontroller.h

@interface AudioViewController : UIViewController<AVAudioPlayerDelegate,NSURLConnectionDelegate>
{
    IBOutlet UILabel *astroName;
    IBOutlet UIButton *playButton;
    IBOutlet UIButton *forwardButton;
    IBOutlet UIButton *rewindButton;
    IBOutlet UISlider *volumeSlider;
    IBOutlet UILabel *currentTime;
    IBOutlet UILabel *duration;
    IBOutlet UISlider *progressBar;
    UIImage *playButtonBG;
    UIImage *pauseButtonBG;
    NSTimer *forwardTimer;
    NSTimer *rewindTimer;
    NSTimer *updateTimer;
    UIImageView *backgroundImg;
    BOOL inBackground;
    NSURLConnection *connect;
    NSMutableData *responseData;
    NSMutableData *downloadData;
    NSMutableString *responseString;
    NSMutableArray *urlsArray;
    NSMutableData  *_data;
    NSDictionary *dataDictionary;
}

- (IBAction)playButtonPressed:(UIButton*)sender;
- (IBAction)rewindButtonPressed:(UIButton*)sender;
- (IBAction)rewindButtonReleased:(UIButton*)sender;
- (IBAction)forwardButtonPressed:(UIButton*)sender;
- (IBAction)forwardButtonReleased:(UIButton*)sender;
- (IBAction)volumeSliderMoved:(UISlider*)sender;
-(IBAction)progressBarMoved:(UISlider *)sender;
-(void)registerForBackGroundNotification;
@property(nonatomic,retain) UILabel *astroName;
@property(nonatomic,retain) UIButton *playButton;
@property(nonatomic,retain) UIButton *pauseButton;
@property(nonatomic,retain) UIButton *forwardButton;
@property(nonatomic,retain) UIButton *rewindButton;
@property(nonatomic,retain) UISlider *volumeSlider;
@property(nonatomic,retain) UISlider *progressBar;
@property(nonatomic,retain) UILabel *currentTime;
@property(nonatomic,retain) UILabel *duration;
@property(nonatomic,retain) NSTimer *updateTimer;
@property(nonatomic,retain) AVAudioPlayer *avPlayer;
@property(nonatomic,assign) BOOL *inBackGround;
@property(nonatomic,retain) UIImageView *backgroundImg;
@property(retain, nonatomic) NSMutableData* responseData;
@property(nonatomic,strong) NSData *downloadData;
@property(nonatomic,strong) NSMutableString *responseString;
@property (nonatomic,assign)int selectedIndex;
@end