I am working with a media player, some media does not have the right to be played over Airplay, don't ask why :). So when I get that media, I set
movieplayerController.allowsAirplay = NO;
If you were playing with airplay before, it is then on by default next time. By doing the code above, you will get the movie playing on your device, but the sound audio route is still sent over airplay. I have tried to overwrite the audio route, but it doesn't budge, seems like Airplay trumps all.
If I could just disable airplay, my problem would be solved, but I can't find anywhere a way to do that.
This looks similar to this question. The answer mentions that the AirPlay button should always be visible to send audio.
Related
Currently I am designing an iOS application that will connect to a music stream through a network and play the audio to the user.
I have a simple setup with a button the enables the stream to start, and a UIwebview that connects to the stream. When I run the app (on an iPhone, NOT a simulator), the button works fine and launches the Quicktime player to begin playback for the audio. Pausing and playing from this screen works like a charm as well.
However I want my user to be able to start up the stream, turn the phone off (sleep the display) and continue to listen to the stream. However sleeping the display will fade out the audio until it stops playback.
I have tried to go into the app's PList file like a few others have told me to do online and added the field "Required background modes" and added App plays audio or streams audio/video using Airplay to the 0 array field and App downloads content from the network to the 1 array field.
("App plays audio" was not offered through auto-complete even though that was the phrase told to make the stream work. Instead I left it as "App plays audio or streams audio/video using Airplay" before trying it the other way to little more luck)
However neither of these are allowing the audio to continue to play when the display has been put to sleep. Can anyone offer up a suggestion as to how to make it work?
In Xcode 5.1, there's another place aside from the Plist that this needs to be set, Target -> Capabilities -> Background Modes... this seems to do more than just affect the plist, though I'm not absolutely sure of this.
Look here an sample code https://github.com/jsagorin/iOSBackgroundAudio
and here .. some explanations (how to Set UIBackgroundModes key in app-info.plist file, Set Audio Session Category , etc) http://www.sagorin.org/ios-playing-audio-in-background-audio/
Just make an entry in plist
Application does not require background mode and set its value to 'NO'
And add background Mode to VOIP
I have an app that shows list of movies in a table view. When I play them one after another on device it works just great. But when I switch to Apple TV over AirPlay it doesn't work anymore. It play's the first video on ATV ok but after a switch to the next video the screen on ATV start blinking/flickering and after a few seconds it falls back playing on a device. I am using MPMoviePlayerController for playing stream videos.
I also found out that if previous video finished playing over AirPlay it tries to start the next one over AirPlay also. Is this intended behaviour?
Is this kind a related with property allowsAirPlay?
I think I've found a solution. Before you switch playing another video you should stop the previous one:
[self.moviePlayer stop];
This is not needed if you are not playing via AirPlay cos the next video will automatically stop previous one by nature - you can not play two videos at once.
But If you do play video over AirPlay you need to stop previous one first and than play the next one.
This solution works for me.
I have a portion of my app that simply launches a webview linked to an mp3 file- it opens the file and plays the audio. What I'd like to do is allow that audio to continue playing even if the user locks their iPhone. (As a side note, is there any way to replace the default Quicktime logo that appears in the player? Not that big a deal, just thought I'd ask =)
A third question- I also do the same thing (webview) with an .m3u linked file to stream live audio throughout the week- is it also possible to keep it playing when the iPhone is locked?
Thanks!!
Ben
Quick Edit: The same URLs work great in IOS Safari (locking and unlocking doesn't affect the audio. Just not in my app's webviews.
I did find my answer though, in case anyone comes here looking. Easiest thing in the world too- just add a row to the plist file labeled "Required Background Modes" and under that set item 0's value to "App plays audio". Voila!
Since the audio is in a UIWebView, I don't believe that you'd be able to play it in the background.
EDIT: I was wrong, adding "App Plays Audio" to the UIBackgroundModes will make it work even when audio is in a UIWebView.
Have you thought about just streaming the .mp3 file yourself? Should be easy enough and you'd be able to setup background streaming. To get you started, I'd check out Matt Gallagher's AudioStreamer class which easily allows you to stream .mp3 files and other audio files from the net: https://github.com/mattgallagher/AudioStreamer
My initial issue was as described in the title there. When I was recording from the mic, sound effects were playing at the same time even if the device was in mute mode (i.e., had the mute button physically switched on).
I since found this thread, which totally worked. the mute button now works correctly, and no sounds are played in the app while the mic is recording...
Unfortunately, the mic has now stopped recording!
It seems like I can have one or the other, but not both. Can anyone confirm if I can have the device on mute and record from the mic at the same time? And if so, how?
Thank you so much in advance,
Stew
UPDATE : I'm fairly certain that this isn't possible, and I'm basing this on the fact that the mute switch also doesn't work in Garage Band (Another app which requires simultanious playback and recording).
To try it yourself, simply load up Garage Band, play some music, and then note that the mute switch doesn't work.
I'm leaving this open in case anyone does come up with a solution, but I won't be offended if it's closed or deleted.
I'm developing an interactive storybook type application for the iPhone and I've recently encountered a frustrating bug concerning audio mixing on the device.
Firstly, I setup an audio session. I set the category to AVAudioSessionCategoryAmbient and then init and play my AVAudioPlayer instance. Now, in the background whilst the audio is playing I'm pre-loading a video to play using an MPMoviePlayerController followed by a call to prepareToPlay. The reason I pre-load the video this way is because I need it to play instantly later on cue with fairly strict timing.
In this configuration, the audio/movie works fine and they mix and do not interrupt each other. However, this particular audio session category does not permit audio to continue playing while the device is locked, a feature I really need. As a result I'm forced to consider a different category: AVAudioSessionCategoryPlayback.
By default this category does not permit mixing with other audio, according to the Apple docs. To enable mixing with other audio I am overriding the relevant category:
OSStatus propertySetError = 0;
UInt32 setProperty = 1;
propertySetError = AudioSessionSetProperty(kAudioSessionProperty_OverrideCategoryMixWithOthers, sizeof(setProperty), &setProperty);
assert(propertySetError == 0);
Unfortunately, this solves my playing whilst locked issue but introduces another issue: the AVAudioPlayer audio is interrupted briefly as the video loads with a minor stutter. The stutter is small, perhaps less than a second but is enough to disrupt the user experience. I've read this related post which enabled me to pre-load the video with the AVAudioSessionCategoryAmbient, but unfortunately the same approach doesn't seem to work with the new category.
The audio session category is applied successfully, according to the return code. Does anyone know why enabling audio mixing with this category is not the same as the mixing facility provided by ambient category?
The best way I've found working a similar problem is to use the newer AVPlayer (+1 #adam) and set your app to enable background audio and receive remote control notifications. I was tipped off to this by #MarquelV following How can you play music from the iPod app while still receiving remote control events in your app?
If you can get backgrounding working properly, that should enable you to continue playing while the device is locked. Oh, and don't forget to add keys to info.plist, its easy to do and then have no idea why it isn't working.