IOS to determine headset insertion/removal

I. Modalities

1. Register for monitoring

Registering the headset device insert /Unplug

audiosessionaddpropertylistener (kaudiosessionproperty_audioroutechange, Audioroutechangelistenercallback, nil);

2.

void Audioroutechangelistenercallback (

void *inuserdata,

Audiosessionpropertyid Inpropertyid,

UInt32 Inpropertyvaluesize,

const void *inpropertyvalue

) {

if (Inpropertyid! = Kaudiosessionproperty_audioroutechange) return;

Cfdictionaryref routechangedictionary = (cfdictionaryref) inpropertyvalue;

Cfnumberref Routechangereasonref =

(CFNUMBERREF) Cfdictionarygetvalue (Routechangedictionary,

Cfstr (Kaudiosession_audioroutechangekey_reason));

SInt32 Routechangereason;

Cfnumbergetvalue (Routechangereasonref, Kcfnumbersint32type, &routechangereason);

if (Routechangereason = = kaudiosessionroutechangereason_olddeviceunavailable) {

NSLog (@ "Unplug the headset");

} elseif (Routechangereason = = kaudiosessionroutechangereason_newdeviceavailable) {

NSLog (@ "Insert headset");

} elseif (Routechangereason = = kaudiosessionroutechangereason_nosuitablerouteforcategory) {

}

}

Two.

[[Nsnotificationcenter defaultcenter] addobserver:self selector:@selector( Outputdevicechanged:) name: Avaudiosessionroutechangenotification object: [Avaudiosession Sharedinstance]];

-(void) outputdevicechanged: (nsnotification *) anotification

{

BOOL flag = [Audiohelper hasheadset];

if (flag) {

[Mbprogresshud showmessagehudaddedto:self. View message:@ " device inserted "];

}

Else

{

[Mbprogresshud showmessagehudaddedto:self. View message:@ " device unplugged "];

}

}

IOS to determine headset insertion/removal