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POAVAudioPlayer not playing when outsourced in class
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  1. POAVAudioPlayer not playing when outsourced in class
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    copied!<p>I'm relatively new to iOS development, but not new to (object-orientated) programming in general.</p> <p>I am programming a kind of recorder app, and I need your help when it comes to this: I've tried to outsource the AVAudioPlayer object into an extra class, <code>AudioPlayer</code>, so I can access it from different controllers. I does everything it should, except playing any sound. Heres a simplified project of my problem:</p> <p><code>ViewController.m</code>:</p> <pre><code>- (IBAction)playButtonPressed:(id)sender { NSArray *pathComponents = [NSArray arrayWithObjects:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],@"AudioMemo.m4a",nil]; NSURL *fileURL = [NSURL fileURLWithPathComponents:pathComponents]; AudioPlayer *myPlayer = [[AudioPlayer alloc] init]; [myPlayer myPlayAudio:fileURL]; } </code></pre> <p>The rest of the file is empty/standard.</p> <p><code>ViewController.h</code>:</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import "AudioPlayer.h" @interface ViewController : UIViewController @property (strong, nonatomic) IBOutlet UIButton *playButton; - (IBAction)playButtonPressed:(id)sender; @end </code></pre> <p><code>AudioPlayer.m</code>:</p> <pre><code>#import "AudioPlayer.h" @implementation AudioPlayer @synthesize aPlayer; -(id) myPlayAudio:(NSURL *)myURL { NSLog(@"in myPlayAudio; before play"); NSError *err = nil; AVAudioSession *audioSession = [AVAudioSession sharedInstance]; [audioSession setCategory:AVAudioSessionCategoryPlayback error:NULL]; [audioSession setActive:YES error:&amp;err]; if(err) { NSLog(@"%@",err); } aPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:myURL error:&amp;err]; if(err) { NSLog(@"%@",err); } [aPlayer play]; NSLog(@"in myPlayAudio; after play"); //[audioSession setActive:NO error:&amp;err]; return err; } @end </code></pre> <p><code>AudioPlayer.h</code>:</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; #import &lt;AVFoundation/AVFoundation.h&gt; @interface AudioPlayer : NSObject &lt;AVAudioPlayerDelegate&gt; { AVAudioPlayer *aPlayer; } @property (nonatomic, strong) AVAudioPlayer *aPlayer; -(id) myPlayAudio:(NSURL *) myURL; @end </code></pre> <p>I've added <code>AudioToolbox Framework</code>, activated iTunes file sharing in the .plist file and loaded an <code>AudioMemo.m4a</code> file to the documents folder.</p> <p>It shows the two NSLogs (before + afterplay), but doesn't make any noise. I know I didn't enable the loudspeaker of the iPhone, i wanted to keep it simple in this case. Of course I checked volume, silent mode etc.</p> <p>When I make everything local (put everything in the <code>ViewController.m</code>), like most of the tutorials on the net, it works fine.</p> <p>I searched, but didn't find this problem before, so I would be very thankful if anybody could help me.</p>
 

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