I am playing video in my application
_player = [[MPMoviePlayerController alloc] init];
_player.view.frame = CGRectMake(0, 60, frame.size.width,frame.size.height - 130);
_player.movieSourceType = MPMovieSourceTypeStreaming;
_player.fullscreen = NO;
[_player setScalingMode:MPMovieScalingModeAspectFill];
_player.controlStyle = MPMovieControlStyleNone;
[_player setContentURL:[NSURL URLWithString:mediaUrl]];
[_player play];
And i have to do some configuration -
1- If device is silent then play video with full volume.
2- If device is playing any music in another application then have to pause the background songs and play again when video play completed.
So i searched a lot then found following solutions -
For 1-
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
its working perfectly when device is silent.then its playing in full volume.
For 2- Both background song and Video audio playing both, I am doing following -
- (void)viewWillAppear:(BOOL)animated {
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
}
-(void)viewWillDisappear:(BOOL)animated {
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
[[AVAudioSession sharedInstance] setActive:NO error:nil];
}
But its not working, its stoping background music but not playing again.
Maybe because viewWillDisappear is not called when the app goes to background.
Furthermore:
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive:NO error: nil];
does not work to avoid background music once it has been activated.
Related
When I start my app music from other apps stops playing.
I've tried adding the setCategory:AVAudioSessionCategoryAmbient in didFinishLaunchingWithOptions but the music still stops on FIRST launch. If I start the music and goes back to the app with home button the music will continue to play. Is there any workaround for the first launch issue?
Snippet I've added:
// make sure music plays while sounds play.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
Try this instead:
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient withOptions:0 error:nil];
Or this if above doesn't work:
[[AVAudioSession sharedInstance] setActive:NO error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
EDIT:
If none of the above works for you, you should maybe try set another category you see fit together with AVAudioSessionCategoryOptionMixWithOthers if that works for your use-case.
Determines whether audio from this session is mixed with audio from
active sessions in other audio apps.
I make an alarm feature for my app, at the time I setup for alarm fire I can play a music track with AVAudioPlayer, it worked well on background mode. But if at this time I opening Youtube app and playing a video then the AVAudioPlayer not work.
Please tell me why this happen and how to resolve this issue, how to play both at the same time
This is code I implement:
NSURL *soundURL = [[NSBundle mainBundle] URLForResource:#"remind2"
withExtension:#"mp3"];
avSound = [[AVAudioPlayer alloc]
initWithContentsOfURL:soundURL error:nil];
[avSound setDelegate:self];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[avSound prepareToPlay];
[avSound setNumberOfLoops:10];
[avSound setVolume:1.0];
[avSound play];
Thanks!
This is happened because of Youtube app also set property "UIBackgroundMode" property in plist. And even if you check any of other Music app like gaana, savan, etc. this will happened in all of the music app.
Replace this line
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
by this:
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback withOptions:AVAudioSessionCategoryOptionMixWithOthers error:nil];
and I resolved my problem
It takes me two days to put the right questions to this problem, I only find the solution when i ask Google why Youtube stop my audio stream and this result search help me
AVAudioPlayer turns off iPod - how to work around?
So I have this app where I play videos and when you exit the app I would like the user to continue to listen to the audio of the video. I use MPMoviePlayerController to play the video and it works in the app perfectly fine. I also setup AVAudioSession up before I play the video and I get no error.
NSError *audioSessionError;
NSError *activationError;
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:&audioSessionError];
[audioSession setActive:YES error:&activationError];
I also set in plist background modes audio. But the video with the audio both stop playing when you close the app. I've also imported the AVFoundation framework.
Simply set Application does not run in background to NO in .plsit file
You need to make couple of changes in plist file.i.e.
1) Set Required background mode to App plays audio
2) set Application does not run in background to YES.
NSError *setCategoryErr = nil;
NSError *activationErr = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr];
[[AVAudioSession sharedInstance] setActive:YES error:&activationErr];
Then, you need to write these much code in AppDelegate
Now, you can easily run audio while phone screen locks or goes in background.
This code worked for me, first you must to give your app permissions to keep playing music in the background (In your .plis), after that go to the wished class and implement this code, first the imports and the the method to play the music.
#import <MediaPlayer/MPNowPlayingInfoCenter.h>
#import <MediaPlayer/MPMediaItem.h>
#import <AVFoundation/AVFoundation.h>
---- o ----
-(void) playMusic{
[[AVAudioSession sharedInstance] setDelegate: self];
NSError *myErr;
// Initialize the AVAudioSession here.
if (![[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&myErr]) {
// Handle the error here.
NSLog(#"Audio Session error %#, %#", myErr, [myErr userInfo]);
}else{
// Since there were no errors initializing the session, we'll allow begin receiving remote control events
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
}
//initialize our audio player
audioPlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:#"http://www.cocoanetics.com/files/Cocoanetics_031.mp3"]];
[audioPlayer setShouldAutoplay:NO];
[audioPlayer setControlStyle: MPMovieControlStyleEmbedded];
audioPlayer.view.hidden = YES;
[audioPlayer prepareToPlay];
[audioPlayer play];
}//end playmusic
You need to turn on Background Modes in capabilities.
I have tried many different methods to duck playing music while my application is running and try to use TTS command to play some custom TTS speech but no luck.
My current code to duck audio while playing TTS is as below:
[[AVAudioSession sharedInstance] setDelegate: self];
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error: nil];
UInt32 allowMixing = 1;
AudioSessionSetProperty (
kAudioSessionProperty_OverrideCategoryMixWithOthers,
sizeof (allowMixing),
&allowMixing
);
allowMixing = YES;
AudioSessionSetProperty(kAudioSessionProperty_OtherMixableAudioShouldDuck, sizeof(allowMixing), &allowMixing);
AudioSessionSetActive(YES);
But still there is issue with volume
with this my volume goes down but after my TTS ends I use below code to level up the ducked music.
AudioSessionSetActive(NO);
But volume stays down.
Any help will be appreciated. I have spent almost 10 days to find out the proper way to duck the music (keep it playing in background with lover volume) while TTS is playing and then at the end of the TTS re-level the volume of music.
[[AVAudioSession sharedInstance] setDelegate: self];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback
withOptions:AVAudioSessionCategoryOptionDuckOthers error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
Try this code to duck audio while playing TTS.
In Info.plist I added:
<key>UIBackgroundModes</key>
<array>
<string>audio</string>
<string>location</string>
</array>
...
I load the sound like this:
NSURL *urlFail = [NSURL fileURLWithPath:[NSString stringWithFormat:#"%#/criticalSound.wav", [[NSBundle mainBundle] resourcePath]]];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:urlFail error:&error];
[audioPlayer setDelegate:self];
audioPlayer.numberOfLoops = 0;
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
[audioPlayer setVolume:1.0];
if (audioPlayer == nil){
}else{
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
musicPlayer = [MPMusicPlayerController iPodMusicPlayer];
if (musicPlayer.playbackState == MPMusicPlaybackStatePlaying)
{
self.wasMusicAppOn = YES;
[musicPlayer pause];
}else{
self.wasMusicAppOn = NO;
}
[audioPlayer play];
}
This works fine when app is active.
But I have a location update when application is in background and from time to time (like when user pass 500m) I should play this sound.
So I put this code there.
Anyway problem is that sound plays when app is in foreground but doesn't work when it is in background.
What am I doing wrong here?
As far as I've been able to tell, you must actually be playing sound while going into the background to be able to continue playing sound in the background.
Also, the description for AVAudioSessionCategoryAmbient states that "Your audio is silenced by screen locking and by the Silent switch (called the Ring/Silent switch on iPhone)".
You need to make couple of changes in plist file.
1) Set Required background mode to App plays audio
2) set Application does not run in background to YES.
NSError *setCategoryErr = nil;
NSError *activationErr = nil;
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr];
[[AVAudioSession sharedInstance] setActive:YES error:&activationErr];
Then, you need to write these much code in AppDelegate
Now, you can easily run audio while phone screen locks or in background.
It works fine for me. :)
for more please refer to Playing Audio in background mode and Audio Session Programming Guide