Detecting iPhone/iPod Touch Accessories

by

Finally found it – After initializing the Audio Session object, – AudioSessionInitialize() – you can make a call to AudioSessionGetProperty, and get the value of kAudioSessionProperty_AudioInputAvailable.

AudioSessionInitialize(NULL, NULL, NULL, NULL);    
UInt32 propertySize, micConnected;
    AudioSessionGetProperty(kAudioSessionProperty_AudioInputAvailable, &propertySize, &micConnected);
    [self updateMicStatus:micConnected]; // user-created method

According to the docs for Audio Session Services, this should be used rather than using the device model (iPhone vs. iPod Touch) to determine if an audio input is available to use. You can also set up a callback function to monitor changes to this property via AudioSessionAddPropertyListener().

Not sure yet if this property also applies to devices connected via the Dock connector, but it appears to work for the headphone jack.

More Related Contents:

  1. Programmatically turn on bluetooth in the iphone sdk?
  2. Objective-C categories in static library
  3. Custom UINavigationBar Background
  4. Play sound on iPhone even in silent mode [duplicate]
  5. iOS SDK – Programmatically generate a PDF file
  6. Storyboard – refer to ViewController in AppDelegate
  7. What are best practices that you use when writing Objective-C and Cocoa? [closed]
  8. How to retrieve user’s current city name?
  9. CAGradientLayer, not resizing nicely, tearing on rotation
  10. Simultaneous gesture recognizers in Iphone SDK
  11. Figure out UIBarButtonItem frame in window?
  12. post image to server in iphone
  13. iPhone – dequeueReusableCellWithIdentifier usage
  14. Best ways to play simple sound effect in iOS
  15. iOS HTTP request while in background
  16. Accordion table cell – How to dynamically expand/contract uitableviewcell?
  17. How to get the size of a NSString
  18. Round double value to 2 decimal places
  19. How to create an image from UILabel?
  20. iPhone Facebook Video Upload
  21. UIDatePicker, setting maximum and minimum dates based on todays date
  22. how to hide navigationbar when i push from navigation controller?
  23. Loading an Image from documents directory
  24. How to rotate a Direction Arrow to particular location
  25. iOS: How do I generate 8 unique random integers?
  26. iphone email attachment
  27. How to automatically size UIScrollView to fit the content
  28. Meaning of Warning “while a presentation is in progress!”
  29. Command /Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1
  30. How to animate application icon in iOS?

Leave a Comment