Here is a method of my own which is a slightly modified version of one found on this site : http://www.iphonedevsdk.com/forum/iphone-sdk-development/9982-play-record-same-time.html
- (BOOL)isHeadsetPluggedIn {
UInt32 routeSize = sizeof (CFStringRef);
CFStringRef route;
OSStatus error = AudioSessionGetProperty (kAudioSessionProperty_AudioRoute,
&routeSize,
&route);
/* Known values of route:
* "Headset"
* "Headphone"
* "Speaker"
* "SpeakerAndMicrophone"
* "HeadphonesAndMicrophone"
* "HeadsetInOut"
* "ReceiverAndMicrophone"
* "Lineout"
*/
if (!error && (route != NULL)) {
NSString* routeStr = (NSString*)route;
NSRange headphoneRange = [routeStr rangeOfString : @"Head"];
if (headphoneRange.location != NSNotFound) return YES;
}
return NO;
}