I'm attempting to use the below code to play an mp3 file. It seems to run fine but no sound comes from the phone. The volume is up, the file is found (if I change the requested file to a name that doesn't exist I get an error), and no errors show up (even in the "playerError"). The only thing I see that might be a problem is perhaps the player deallocating before it finishes playing, but I'm not sure off hand how to fix that. Any suggestions as to what the problem might be and how to fix it? Thank you much!
...
if([responseString isEqual: #"Stop"]){
[self playStop];
}
...
- (void) playStop{
NSString *soundFilePath =
[[NSBundle mainBundle] pathForResource: #"stop"
ofType: #"mp3"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
NSError *playerError;
AVAudioPlayer *newPlayer =
[[AVAudioPlayer alloc] initWithContentsOfURL: fileURL
error: &playerError];
[newPlayer play];
}
If you make your "AVAudioPlayer" an instance variable or a property (instead of a local variable within the function), so that it sticks around instead of being immediately released by ARC when "playStop" finishes, you will likely have much better luck.
Related
What Is the Easiest way to Play Sound on the Iphone? I have an mp3 file, I'd rather keep it and not convert it to other format.
The simplest way I know of to play an MP3 file is to use the AVAudioPlayer class. Basically, just do (skipping error checking, setting delegate for detecting completion, etc):
NSURL* soundUrl = [[NSBundle mainBundle] URLForResource:#"soundFile" withExtension:#"mp3"];
AVAudioPlayer* player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundUrl error:&err];
[player play];
First add AVFoundation Framework to the project [Goto Target> Right click on project>Build Phases>Link Binary with Library> Click on +> select AVFoundation> Add]
// get file path
NSString *soundPath = [[NSBundle mainBundle] pathForResource: fileNameToPlay ofType:#"mp3"];
// allocate and refer to file
AVAudioPlayer *player =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath: soundPath] error: NULL];
// set delegate
player. delegate = self;
// play
[player play];
Apparently this turned out to be quite a mess, but I found a solution. I'm running XCode 4.4.1.
Here are the steps that worked for me:
Drag mp3 file from finder into XCode project -> Supporting Files. Make sure to copy the file. let's assume the file name is sound.mp3.
Add AVFoundation framework to your project.
import < AVFoundation/AVFoundation.h>
#property (strong) AVAudioPlayer* soundPlayer;
use the following code to init the player and play the mp3:
NSURL *chemin = [NSURL fileURLWithPath:[NSString stringWithFormat:#"%#/sound.mp3", [[NSBundle mainBundle] resourcePath]]];
NSError *error;
self.soundPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:chemin error:&error];
[self.soundPlayer play];
Now at this point, I got an exception which is described here: AVFoundation iOS 5
In short it means that there is probably a bug in the simulator which shouldn't happen on the device. In my case I turned all exception on, which stopped my code from executing. What you should do is to remove the option of throwing all exceptions.
In addition, in my case it's 3-5 seconds until it first play the sound, so be patient when you don't get the sound right away. After it play for the first time, it will play instantly.
Lets say I am dragging my finger on screen and I have 1 second .caf sound file in my bundle.
So what is the best way to play my sound file in a loop till i am dragging my fingers. And it should stop whenever I remove touches.
I know touches implementation. Just post your views about using sound file.
See AVAudioPlayer class, it worked pretty well for me for similar behaviour described in your question.
This is how I did it. At the moment, I don't know of a more efficient method...but here's what I used to loop my background sound. Hope this helps.
NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:#"%#/yourAudio.caf", [[NSBundle mainBundle] resourcePath]]];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
audioPlayer.numberOfLoops = -1;
[audioPlayer play];
I developing simple game application in which i playing sound with UIView animation.
theAudioPlayer = [[AVAudioPlayer alloc] init];
[theAudioPlayer initWithContentsOfURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:#"pageTurn"] ofType:#"mp3"]] error:NULL];
[theAudioPlayer play];
where theAudioPlayer is the instance object of AVAudioPlayer class.
Now my problem is when i playing the game after 10-15 minutes during the animation of UIViews sound going to mute.It never play again, why?
Thanks for sending an viewing my question.
First, the loading code is needlessly complex. You should only initialize the player once and get the sample URL right from the bundle:
theAudioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:
[[NSBundle mainBundle] URLForResource:#"pageTurn" ofType:#"mp3"] error:NULL];
I would not be surprised if that solved the problem alone (given the multiple initialization). And if it does not, which is quite probable, how do you release the player? Do you release it at all?
I'm beginning iPhone programming and I am trying to make a little test app which plays a sound when you press a button. This question is pretty noob so bear with me. Pretty much I'm trying to figure out how to handle the memory situation. Where do I release the instances created so as to avoid memory issues? Right now if I click on the button multiple times quickly the app crashes. I tried declaring everything in viewDidLoad and putting the release in the dealloc method, but under this design I have to wait until the entire sound is done playing before being able to play the sound again. I want to be able to press the button in the middle of a sound being played and "interrupt it" if that makes sense.
The way its written now is when you press a button, this method is called and the sound is played
-(IBAction)buttonPressed:(id)sender{
NSString *path = [[NSBundle mainBundle] pathForResource:#"filename" ofType:#"mp3"];
AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error: NULL];
theAudio.delegate = self;
[theAudio play];
}
In this set up it works so that I can "interrupt" an already playing sound by pressing the button again and the sound restarts. However pressing it quickly makes the app crash.
You should release immediately before you exit the method like so:
-(IBAction)buttonPressed:(id)sender{
NSString *path = [[NSBundle mainBundle] pathForResource:#"filename" ofType:#"mp3"];
AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error: NULL];
theAudio.delegate = self;
[theAudio play];
[theAudio release];
}
or something like that.
Because when you alloc/init a local variable you assign it a retain count of +1. But when you exit the method the reference to that var is still living and you can't access it, which leads in memory leaking. Try to begin from: Memory Management. Good luck.
I have the following simple code that plays a sound
NSString *soundPath = [[NSBundle mainBundle] pathForResource:#"sound" ofType:#"wav"];
player =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath: soundPath] error:nil];
player.volume = 1;
player.numberOfLoops = 0;
[player prepareToPlay];
[player play];
For some reason this code only plays in the simulator but not the device, any ideas?
Update: Actually I installed AvTouch, a sample app from Apple onto 3.0 and that doens't work either. Is something wrong with AVAudioPlayer?
This can happen when the codec used by the audio file is available on OS X, but not the iPhone. It is also caused when the extension doesn't match the actual content of the file. Step through with the debugger and watch the debug console for codec errors or reconvert your file to a supported format with afconvert.