Stopping music from iPod when launching app

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Stopping music from iPod when launching app

(12 posts) (7 voices)

Started 1 year ago by Clarity
Latest reply from v3nom

Tags:

Clarity
Member

Hi,

I am relatively new to the cocos2d environment and am encountering the following issue:

- If I launch an application while listening to a song via my iPod, the music does not stop/pause. The music continues to play in the background.

Desired effect:
- To stop/pause music when my application launches

I have searched through this forum & other cocos2d resources to see what the issue is, but have been unsuccessful. In examining other applications that contain the desired behavior (mentioned above), I have narrowed the issue down to the Director. While other applications uses the viewController to force this behavior, I have not figured out how to remedy this in the Director.

Here's a cut-out of my applicationDidFinishLaunching call:

- (void) applicationDidFinishLaunching:(UIApplication*)application
{
// Init the window
window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

// cocos2d will inherit these values
[window setUserInteractionEnabled:YES];
[window setMultipleTouchEnabled:NO];

// Try to use CADisplayLink director
// if it fails (SDK < 3.1) use Threaded director
if( ! [Director setDirectorType:CCDirectorTypeDisplayLink] )
[Director setDirectorType:CCDirectorTypeDefault];

// Use RGBA_8888 buffers
// Default is: RGB_565 buffers
[[Director sharedDirector] setPixelFormat:kPixelFormatRGBA8888];

// Default texture format for PNG/BMP/TIFF/JPEG/GIF images
// It can be RGBA8888, RGBA4444, RGB5_A1, RGB565
// You can change anytime.
[Texture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA8888];

// before creating any layer, set the landscape mode
[[Director sharedDirector] setDeviceOrientation:CCDeviceOrientationLandscapeLeft];
[[Director sharedDirector] setAnimationInterval:1.0/60];
[[Director sharedDirector] setDisplayFPS:NO];

// create an openGL view inside a window
[[Director sharedDirector] attachInView:window];
[window makeKeyAndVisible];

MenuScene *ms = [MenuScene node];
[[Director sharedDirector] runWithScene:ms];

}

Am I doing something wrong?

Posted 1 year ago #
Blue Ether
Member
Nothing in the code you posted will stop music. Are you using CocosDenshion? Some simple code for initializing audio looks like this:
```
UInt32 otherAudioIsPlaying, category;

AudioSessionInitialize(NULL, NULL, NULL, self);
AudioSessionGetProperty(kAudioSessionProperty_OtherAudioIsPlaying, sizeof(otherAudioIsPlaying), &otherAudioIsPlaying);
if(!otherAudioIsPlaying)
	category = kAudioSessionCategory_SoloAmbientSound;
else
	category = kAudioSessionCategory_AmbientSound;

AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(category), &category);
```
If you always want the user's music to stop, you can throw out everything related to "otherAudioIsPlaying" and instead set category to "kAudioSessionCategory_SoloAmbientSound"

I also want to add that most users feel that being able to listen to their music while playing games is a good thing. You should think about whether this is really critical to your design.
Posted 1 year ago #
Clarity
Member

@Blue Ether,

Thank you for your response.

I am using the SimpleAudioEngine from CocosDenshion to play specific sound effects in my application. Since sound is an important feature of my app, I would like to Stop/Pause any user music when my application launches. If I do not do so, the user music just drowns out the sound effects set in the application. This is why I would like to remedy this.

When I examined code from other applications, I noticed that they often use the ViewController to Stop/Pause the user music. I did not know how to do this via Cocos2d.

From your code above, should I apply this in my AppDelegate? More specifically, use this within the applicationDidFinishLaunching routine?

Thanks again

Posted 1 year ago #
Steve Oldmeadow
Administrator

One nice thing about an open source product is you can look at the source. Look at line 55 of SimpleAudioEngine.m

Posted 1 year ago #
Clarity
Member

@Steve,

Brilliant! This was exactly what I was looking for.

Thank you so much!

Posted 1 year ago #
Steve Oldmeadow
Administrator

In a very soon to be released version of CocosDenshion you will be able to change the audio session category on the fly and change the start up behaviour for SimpleAudioEngine. For now you could just hack that line in SimpleAudioEngine to use the kAudioManagerFxPlusMusic mode.

Posted 1 year ago #
abitofcode
Moderator

I have to agree with @Blue Ether, its unlikely that a user has accidentally started playing their own tunes before firing up a game or application, at the very least I would offer the user a chance to continue listening to their own music before cutting it.

I've been testing my own game for a few months now and playing with my own music occasionally makes a welcome break from the in game loops :)

Posted 1 year ago #
gangcil
Member

i require exactly the same thing.....but can't find any way....i go to the line no 55 in SimpleAudioEngine.m file and found nothing helpful...i am using cocos2d 99.5

Posted 1 year ago #
Steve Oldmeadow
Administrator
@gancil - add this line of code in applicationDidFinishLaunching.
```
[[CDAudioManager sharedManager] setMode:kAMM_FxPlusMusic];//Only this app will play audio
```
Posted 1 year ago #
v3nom
Member
Hi Everyone:

I've been working in a game development and I need help with something related to this topic.

My problem is that I want that my game music and the iPod music plays at the same time together. If I start my game while playing music in the iPod my game sounds will never sound.

I tried the line that Steve says:
```
[[CDAudioManager sharedManager] setMode:kAMM_FxPlusMusic];//Only this app will play audio
```
And this really does what you say it does, but it doesn't solve my problem. I must clear that I am using SimpleAudioEngine.

Thanks a lot if you can help me and sorry if it is a lazy question.
Posted 1 year ago #
Mark Sawicki
Member

@v3nom,

Check out the source to figure out what mode you would like:
https://github.com/cocos2d/cocos2d-iphone/blob/master/CocosDenshion/CocosDenshion/CDAudioManager.m#L336

-Mark

Posted 1 year ago #

v3nom
Member

@Mark Thank you so much!!!

For anyone, this line will do the trick:

[[CDAudioManager sharedManager] setMode:kAMM_PlayAndRecord];//Everything will sound together including iPod music

Posted 1 year ago #

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