2014/10/15 下午 10:04:13

iphone Programming Glossary: audiosessionaddpropertylistener

http://stackoverflow.com/questions/10458438/ios-use-the-volume-buttons-as-input

. Then you make it active with AudioSessionSetActive . Then listen for changes in the volume with AudioSessionAddPropertyListener where you can pass a callback that has type AudioSessionPropertyListener . Check the following website out for an example..

How to programatically detect earpiece in iphone?

http://stackoverflow.com/questions/1832041/how-to-programatically-detect-earpiece-in-iphone

and implement how you want to handle the rout changes Registers the audio route change listener callback function AudioSessionAddPropertyListener kAudioSessionProperty_AudioRouteChange audioRouteChangeListenerCallback self and within the callback you can get the..

Play MP3 Files with iPhone SDK

http://stackoverflow.com/questions/1973902/play-mp3-files-with-iphone-sdk

setCategory AVAudioSessionCategoryAmbient error nil Registers the audio route change listener callback function AudioSessionAddPropertyListener kAudioSessionProperty_AudioRouteChange audioRouteChangeListenerCallback self Activates the audio session. NSError..

Detecting if headphones are plugged into iPhone

http://stackoverflow.com/questions/3575463/detecting-if-headphones-are-plugged-into-iphone

d n error btn_record.enabled inputAvailable YES NO we also need to listen to see if input availability changes error AudioSessionAddPropertyListener kAudioSessionProperty_AudioInputAvailable propListener self if error printf ERROR ADDING AUDIO SESSION PROP LISTENER d n..

How to get audio volume level, and volume changed notifications on iOS 4?

http://stackoverflow.com/questions/3651252/how-to-get-audio-volume-level-and-volume-changed-notifications-on-ios-4

is what I've tried so far all without any success. Following Apple's audio services documentation I should register an AudioSessionAddPropertyListener for kAudioSessionProperty_CurrentHardwareOutputVolume which should work like this Registering for Volume Change notifications.. work like this Registering for Volume Change notifications AudioSessionInitialize NULL NULL NULL NULL returnvalue AudioSessionAddPropertyListener kAudioSessionProperty_CurrentHardwareOutputVolume audioVolumeChangeListenerCallback self returnvalue is 0 which means that..

Routing iPhone Audio Sound

http://stackoverflow.com/questions/3678249/routing-iphone-audio-sound

audiosession share improve this question To do this you have to add property listener when you setup audio session AudioSessionAddPropertyListener kAudioSessionProperty_AudioRouteChange audioSessionPropertyListener nil Where void audioSessionPropertyListener void inClientData..

iPhone - Capture device button push

http://stackoverflow.com/questions/639721/iphone-capture-device-button-push

Float32 inData controller setGainManual newGain which gets initialized in my view controller's viewDidLoad like this AudioSessionAddPropertyListener kAudioSessionProperty_CurrentHardwareOutputVolume audioVolumeChangeListenerCallback self This is all SDK App Store friendly..

Detecting iPhone/iPod Touch Accessories

http://stackoverflow.com/questions/667196/detecting-iphone-ipod-touch-accessories

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..