Is it possible to write an iPhone app to control the built in iPod?


       I'm trying to learn how to program on the iPhone, so I was wondering if it was possible to control the built in iPod from a third party app.

If it is possible, could you please point me to a good tutorial that can help me make this?

Thanks in advance!
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Hamidreza VakilianSenior iOS/Android DeveloperCommented:
The MediaPlayer framework is what you are looking for. There is a useful guide which also contains a link to the MediaPlayer API overview.

Specifically, you're looking for MPMusicPlayerController. Your app can control either a dedicated app media player or the iPod media player which appears to be what you want.

A simple example would be something like (header omitted):
@implementation MyPlaybackController

- (id)initWithNibName:(NSString *)nibName bundle:(id)bundleOrNil 
  if ((self = [super initWithNibName:nibName bundle:bundleOrNil])) {
    self.musicPlayer = [MPMusicPlayerController iPodMusicPlayer];
  return self;

- (IBAction)skipForward:(id)sender
  [self.musicPlayer skipToNextItem];

- (IBAction)skipBack:(id)sender
  [self.musicPlayer skipToPreviousItem];

- (IBAction)togglePlayback:(id)sender
  if (self.musicPlayer.playbackState == MPMusicPlaybackStatePlaying) {
    [self.musicPlayer pause];
  } else {
    [self.musicPlayer play];


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Do take time to read the documentations and take note of the caveats mentioned with regards to Home Sharing. You'll also want to register for notifications in changes to the player state that can occur from outside your control.

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errangAuthor Commented:
Ah, sweet, thanks!

I checked out this page:

It isn't possible for me to intercept incoming calls, or access the complete functionality of the mail app, is there?
Hamidreza VakilianSenior iOS/Android DeveloperCommented:
To intercept calls and mail you should access private APIs.
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errangAuthor Commented:
Hm.. by private APIs, do you mean you need to be in the developer program to use them? Or do we need to develop those ourselves?

If its the first, could you please point me to them? =)
Hamidreza VakilianSenior iOS/Android DeveloperCommented:
These private APIs are available for all. You can check out for private frameworks. These private frameworks are often used for jailbroken devices development (the private framework's header you find in this site are reverse engineered by hackers). AppStore forbids developers from using these private APIs. If you use such APIs in your app, it will be rejected by AppStore.

-- There's also some apps in appstore which are exceptions to this rule (cisco's anyconnect, tapdictionary, etc...). Probably these applications have signed some extra agreements with apple regarding using these private frameworks. Ask Apple developer support for accurate information on this...
If you called them, inform us from what they told you.
You will be appreciated alot...
errangAuthor Commented:
>>Ask Apple developer support for accurate information on this...

Alright, will do =), thanks for the information =D
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