音频文件未在iPhone / iOS中播放

Question

I need to play a audio file(mp3) that i am fetching from json in a table view, on clicking row respective song path is passing to another UIView..on loading view it should play.

I know there is a lot of similar problem pasted over internet and i tried many ways nothing worked for me.

Here is the code snippet.

- (void)viewDidLoad
{
     [super viewDidLoad];

     NSError *error = nil;
     [[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryAmbient error:&error];
//  audioFile--contains path-- 
//    NSString *filePath = [[NSBundle mainBundle] pathForResource:audioFile ofType:@"mp3"];
     NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSAllLibrariesDirectory, NSUserDomainMask, YES) objectAtIndex:0];

     NSString *filePath = [documentsDirectory stringByAppendingPathComponent:audioFile];

     NSURL *url = [NSURL fileURLWithPath:filePath];

     player = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error];
     if([self.player prepareToPlay])
     {
          NSLog(@"preparing");
     }
     else
     {           
          NSLog(@"some error");
     }
     if([self.player play])
     {
          NSLog(@"playing");
     }
     NSLog(@"not playing");
     NSLog(@"\n\nfile path-> %@\n\n url-> %@",filePath,url);
}

Where player is an object of AVAudioPlayer class

   @property (strong, nonatomic) AVAudioPlayer *player;

From above, Values coming from NSLog() are(for a particular row)

 file path-> /Users/ensignweb/Library/Application Support/iPhone Simulator/6.1/Applications/CE146654-3D1B-4F60-B37D-825267FD6EFB/Library/http:/www.fundamentalalvarado.com/assets/sermons/bible-doctrine-series/033113-pm-Doctrine of Creation vs The Lie of Evolution.mp3

 url-> file://localhost/Users/ensignweb/Library/Application%20Support/iPhone%20Simulator/6.1/Applications/CE146654-3D1B-4F60-B37D-825267FD6EFB/Library/http:/www.fundamentalalvarado.com/assets/sermons/bible-doctrine-series/033113-pm-Doctrine%20of%20Creation%20vs%20The%20Lie%20of%20Evolution.mp3

When i used NSBundle filePath was null so i commented it.Even at the end If Loop escaping to else .I guess there could be the problem.

Please help me out.

Answer 1

This code worked for me

@interface PlayAudioVc : UIViewController<AVAudioPlayerDelegate>
{
//for playback section
    AVAudioPlayer *audioPlayer;
}

-(IBAction) playAudio{
        NSError *error;
        NSURL *url = [NSURL fileURLWithPath:self.audioName];
        audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
        audioPlayer.delegate = self;
        if (error)
            NSLog(@"Error: %@", [error localizedDescription]);
        else
            [audioPlayer play];
}

self.audioName is containing a valid path to audio file

Answer 2

I do this in my app and it works like a charm

/**
 *  This method plays the 'pop' sound during the animation.
 */
-(void) playSound : (NSString *) fName : (NSString *) ext
{
    NSString *path  = [[NSBundle mainBundle] pathForResource : fName ofType :ext];
    if ([[NSFileManager defaultManager] fileExistsAtPath : path])
    {
        NSURL *pathURL = [NSURL fileURLWithPath : path];
        AudioServicesCreateSystemSoundID((__bridge CFURLRef) pathURL, &audioEffect);
        AudioServicesPlaySystemSound(audioEffect);
    }
    else
    {
        NSLog(@"error, file not found: %@", path);
    }
}

You need to import #import AVFoundation/AVFoundation.h and the respective framework.

Go to project summary and build phases tab under that go to copy bundle resources.

Under copy bundle resources check whether the audio file exists.

Answer 3

Try this one,

Include AVFoundtion.Framework and import into AVFoundation/AVFoundation.h into ViewController and Add AVAudioPlayerDelegate in '.h' file.

Then create object for AVAudioPlayer class

@property (nonatomic, retain) AVAudioPlayer *audioPlayer;

NSString *path = [[NSBundle mainBundle]pathForResource:@"AIRTEL" ofType:@".MP3"];
NSURL *url = [NSURL fileURLWithPath:path];

NSError *error;
audioPlayer = [[AVAudioPlayer alloc]
               initWithContentsOfURL:url
               error:&error];
if (error)
{
    NSLog(@"Error in audioPlayer: %@",
          [error localizedDescription]);
} else {
    audioPlayer.delegate = self; 
    [audioPlayer prepareToPlay];
    [audioPlayer play];

}

Hope this would help.

Answer 4

Your URL looks strange:

url-> file://localhost/Users/ensignweb/Library/Application%20Support/iPhone%20Simulator/6.1/Applications/CE146654-3D1B-4F60-B37D-825267FD6EFB/Library/http:/www.fundam

it starts with file:// and contains http:/