StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POAudioSessionSetActive fails after interruption
text
Body
copied!<p>I was trying to figure out what actually happens for weeks and I have no idea why I cannot continue playback after interruption, so probably you guys know an answer. AudioSessionSetActive(TRUE) always returns '!cat' which is kAudioSessionIncompatibleCategory while re-activation if my app plays in background and I am in different app. Although it works fine and continues playback if I caught interruption while being in my app. </p> <p>Original code actually has all AudioSession and AudioQueue calls wrapped in macros which prints OSStatus if it means error, but I removed it for better readability. Also, [self pause] just toggles pause, so basically it calls AudioQueueStart(audioQueue, NULL) on upause but it doesn't work ofcourse if AudioSession fails.</p> <p>Audio Session initialization code:</p> <pre><code>AudioSessionInitialize(NULL, NULL, _audioSessionInterruptionListener, self); UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback; AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory); AudioSessionAddPropertyListener(kAudioSessionProperty_AudioRouteChange, _audioSessionPropertyListener, self); AudioSessionSetActive(TRUE); </code></pre> <p>Interruption handler code:</p> <pre><code>- (void)handleInterruptionChangeToState:(AudioQueuePropertyID)inInterruptionState { if(inInterruptionState == kAudioSessionBeginInterruption) { NSLog(@"+Interruption"); if(self.state == NX_STATE_PLAY) { [self pause]; AudioSessionSetActive(FALSE); isPausedByInterruption = YES; } } else if(inInterruptionState == kAudioSessionEndInterruption) { if(isPausedByInterruption) { AudioSessionSetActive(TRUE); [self pause]; isPausedByInterruption = FALSE; } NSLog(@"-Interruption"); } } </code></pre> <p>This streamer source code can be found here <a href="https://bitbucket.org/and/amaudiostreamer/src/122de41fe6c0/AMAudioStreamer/AMAudioStreamer/Classes/NxAudioStreamer.m" rel="noreferrer">https://bitbucket.org/and/amaudiostreamer/src/122de41fe6c0/AMAudioStreamer/AMAudioStreamer/Classes/NxAudioStreamer.m</a> if it's gonna help somehow to resolve an issue..</p>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload