CODEWITHSUNDEEP
iosavaudioplayerlinker-errors
jake9115
jake9115

Reputation: 4084

Weird error while trying to play .mp3 sound effects in xcode?

I am trying to code the simplest 'press a button an hear a sound' setup in xcode as possible, and am still managing to get some cryptic errors. Here is my code:

In .h file:

#import <AVFoundation/AVFoundation.h>

In .m file:

- (IBAction)beepButton:(UIButton *)sender {
       NSURL* musicFile = [NSURL fileURLWithPath:[[NSBundle mainBundle]
                                                   pathForResource:@"buttonBeep"
                                                   ofType:@"mp3"]];
        AVAudioPlayer *click = [[AVAudioPlayer alloc] initWithContentsOfURL:musicFile error:nil];
        [click play];
    //[click release];
}

When I try to compile my app, I get the errors:

Undefined symbols for architecture armv7s:
  "_OBJC_CLASS_$_AVAudioPlayer", referenced from:
      objc-class-ref in MyFirstViewController.o
ld: symbol(s) not found for architecture armv7s
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Am I doing something wrong? Any help is appreciated!

Upvotes: 0

Views: 177

Answers (3)

rmaddy
rmaddy

Reputation: 318774

This is called a linker error. This is done after everything is compiled OK.

The problem is with the symbol _OBJC_CLASS_$_AVAudioPlayer. What you do is ignore the part up through the dollar sign leaving you with AVAudioPlayer.

Since you are trying to use the AVAudioPlayer class and you import <AVFoundation/AVFoundation.h> you need to realize that you must include the AVFoundation.framework in your project.

If you look at the reference docs for AVAudioPlayer, you will see that the docs state it is in the AVFoundation.framework. This is how you know you need to add it to your project.

Upvotes: 2

Agent Chocks.
Agent Chocks.

Reputation: 1312

have u added the AVFoundation.framework? and make sure your .mp3 file appears in "copy bundle resources"

Upvotes: 1

Ravindra Bagale
Ravindra Bagale

Reputation: 17655

you have to add AVFoundation.framework to your project, because it contains the AVAudioPlayer class

Upvotes: 1

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