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?
Related
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 am streaming music file using AVAudioPlayer, It plays fine in background if i use nib file but when i try the same code using storyboard, The music playing stoped. I can't understand the reason why its stop playing in background when i using storyboard.
i am using this code for it
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[audioPlayer setVolume:0.1];
[audioPlayer play];
Can any help me to play it in background using storyboard. Thanks in advance.
Let's try:
#implementation YourViewController
{
AVAudioPlayer *audioPlayer;
}
// if your are using ARC, after exiting this method, system will kill your audioPlayer. This is the reason why you can not play the music.
// in your method:
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
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
I have to give audio feedback when my app is in foreground and also in background. But when the app enters background audio feedback is not heard. In info.plist I have set background mode to App plays audio or streams audio/video using AirPlay and used the following but the audioPlayerDidFinishPlaying delegate is not called when app enters background and audio is not heard.
AVAudioPlayer *sound = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&err];
sound.delegate = self;
///Fixed the issue No audible feedback when main audio is silent
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
// This is necessary if you want to play a sequence of songs, otherwise your app will be
// killed after the first one finishes.
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[soundQueue addObject:sound];
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
I've seen lots of questions about playing audio in the background. These questions often ask why the audio plays in the background of the simulator, yet the device simply wouldn't.
In my case, it's reversed.
When I tested my sample app in my iPad, it worked perfectly. However, when I began testing in the simulator, it simply wouldn't continue playing in the background.
Here are the codes I used:
NSURL *url = [NSURL URLWithString:firstSong];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
[audioPlayer setNumberOfLoops:-1];
[audioPlayer setCurrentTime:0];
[[AVAudioSession sharedInstance]setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance]setDelegate:self];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[self becomeFirstResponder];
[audioPlayer play];
Can anyone tell me why this won't work? Is it a bug or something?
Background audio is not supported in iOS Simulator afaik.