I've created a list of music file names in an array which is used to populate an uitableview. I want to make the audio player take this array or table as the playlist and play them continuously one by one, with all the features like play, pause, next, previous, forward, backward and stop. What is the best way to implement this. All the music files in the resource folder itself so that i can initiate each one as
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"filename" ofType:#"mp3"];
NSURL *newURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
self.soundFileURL = newURL;
[newURL release];
[[AVAudioSession sharedInstance] setDelegate: self];
[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryAmbient error: nil];
AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: soundFileURL error: nil];
self.appSoundPlayer = newPlayer;
[newPlayer release];
[appSoundPlayer prepareToPlay];
[appSoundPlayer setVolume: 1.0];
[appSoundPlayer setDelegate: self];
Could this be as simple as implementing the AVAudioPlayerDelegate?
appSoundPlayer.delegate=self;
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
if (successfully)
{
// play next track
}
}
Obviously you'd need to keep track of which track is currently playing in order to work out the next track to play, but that shouldn't be a problem. You'd also have to implement your own controls and logic for track skip etc, but again this is easily done.
Related
I need to play audio automatically after open the view and have one button to control play/pause event. I heard that it has a prepareToPlay to control the audio by button but it cannot play audio automatically.
Here is my code:
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:#"track8"
ofType:#"mp3"]];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
[audioPlayer prepareToPlay];
and in the button:
-(IBAction)playPauseButtonPress:(id)sender{
if (self.isPlaying) {
[self.audioPlayer pause];
self.isPlaying = NO;
}else {
[self.audioPlayer play];
self.isPlaying = YES;
}
}
Is it possible to autoplay audio and play/pause with button? How?
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:#"track8"
ofType:#"mp3"]];
NSError *error;
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
[audioPlayer prepareToPlay];
There is method play is available for playing it. You just need to add following line:
[audioPlayer play];
Please check the AVAudioPlayer documentation
play >
Calling this method implicitly calls the prepareToPlay method if the audio player is not already prepared to play.
prepareToPlay > Calling this method preloads buffers and acquires the audio hardware needed for playback, which minimizes the lag between calling the play method and the start of sound output.Calling the stop method, or allowing a sound to finish playing, undoes this setup.
There is nothing like you can't pause the audio if you use play instead of prepareToPlay.
Hope this helps
Am working on an iPad/iPhone App & am playing a background music with this code snippet which I call in the Delegate's didFinishLaunchingWithOptions method:
-(void) playMusic {
NSLog(#"play music!");
NSString *sound_file;
if ((sound_file = [[NSBundle mainBundle] pathForResource:#"musicfile" ofType:#"mp3"])){
NSURL *url = [[NSURL alloc] initFileURLWithPath:sound_file];
self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:NULL];
self.audioPlayer.delegate = self;
[self.audioPlayer setNumberOfLoops:-1]; // Infinite loop
[self.audioPlayer prepareToPlay];
[self.audioPlayer setVolume:0.2];
[self.audioPlayer play];
} else {
NSLog(#"WARN : music file not found!");
}
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
}
But I see that this method alone is taking 0.43 seconds on an average, which is a lot! Am I doing it the right way? Or is there a faster way to start the music play ? Please help.
My environment : iOS5, XCode 4.3, iPad 2.0 is what I tested this with now
I would like to get an audio stream from URL and play it on iPhone. Unfortunately, there is only C# example of how to play that stream, but I need a realization on Objective C in iPhone frameworks. I have tried my self to use different audio frameworks but it was all unsuccessful. This is what in C#:
response = httpWebRequest.GetResponse();
using (Stream stream = response.GetResponseStream())
{
using (SoundPlayer player = new SoundPlayer(stream))
{
player.PlaySync();
}
}
What should I do in objective C to get a stream audio from that url? In that URL I don't have an mp3 file or something, I just get a stream. Probably I must somehow download that stream to an iPhone audio file and then play it to get rid of lags.
I tried this:
AVPlayer *player = [AVPlayer playerWithURL:url];
[player play];
And this:
AVAudioPlayer *theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL: url error:nil];
[theAudio setVolume :0.50]; //setting the volume
[theAudio play];
Neither worked.
I have tested my url, it works well in browser.
This is the code that worked:
NSData *_objectData = [NSData dataWithContentsOfURL:url];
NSError *error;
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithData:_objectData error:&error];
audioPlayer.numberOfLoops = 0;
audioPlayer.volume = 1.0f;
[audioPlayer prepareToPlay];
if (audioPlayer == nil)
NSLog(#"%#", [error description]);
else
[audioPlayer play];
NSString* resourcePath = url; //your url
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:resourcePath]];
NSError *error;
app.audioPlayer = [[AVAudioPlayer alloc] initWithData:_objectData error:&error];
app.audioPlayer.numberOfLoops = 0;
app.audioPlayer.volume = 1.0f;
[app.audioPlayer prepareToPlay];
if (app.audioPlayer == nil)
NSLog(#"%#", [error description]);
else
[app.audioPlayer play];
Hey I faced this problem of audio streaming for a radio application. I had searched for the answers and they did not work. AVAudioPlayer is not the class to be used here. Downloading the contents of URL using NSData object is not the solution either as it downloads the contents then the code further executes. It is similar to downloading a mp3 and then playing it locally on a player.
[NSData dataWithContentsOfURL:[NSURL URLWithString:resourcePath]]; //Downloads the contents of the url and in case of radio the url's content is unlimited. The program gets frozen on executing this.
Instead use AVPlayer class.
This code worked in my radio application
AVPlayer *objAVPlayer = [[AVPlayer alloc] initWithURL:url];
[objAVPlayer play];
This code does not download the contents at the url but it plays the stream as it is received.
Look into the AVPlayer class, part of the AVFoundation framework... this is the objective-c (iOS) class you use for streaming audio.
MPMoviePlayerController *player;
player = [[MPMoviePlayerController alloc] init] ;
player.view.frame = CGRectMake(0, 0, 0, 0);
player.movieSourceType = MPMovieSourceTypeStreaming;
player.view.hidden = YES;
[self.view addSubview: [wikiMusicPlayer view]];
NSString *address = Your URL;
address = [address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *url = [NSURL URLWithString:address];
[wikiMusicPlayer setContentURL:url];
[wikiMusicPlayer prepareToPlay];
[wikiMusicPlayer setShouldAutoplay: NO];
[wikiMusicPlayer play];
I want to play an audio loop by turning on a switch but i do not want the loop to end until the switch is turned off. When the loop ends i want it to simply start back at the beginning as to be continuos.
Try something like this. Note the -1 tells the music to repeat indefinitely:
Import this file at the top of your file:
#import <AVFoundation/AVFoundation.h>
Then to use it:
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:resourcePath ofType:#"caf"];
NSError *activationError = nil;
NSError *audioPlayerInitError = nil;
[[AVAudioSession sharedInstance] setActive: YES error:&activationError];
NSURL *newURL = [NSURL fileURLWithPath:soundFilePath];
AVAudioPlayer *newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:newURL error:&audioPlayerInitError];
[newPlayer prepareToPlay];
[newPlayer setVolume:.8];
[newPlayer setNumberOfLoops:-1]; // -1 means play indefintely
[newPlayer setDelegate: self];
[newPlayer play];
[newPlayer release];
And then to stop it you would do:
if ([newPlayer isPlaying]) {
[newPlayer stop];
}
We want to create an application that downloads a mp3 file and then starts to play it.
Has anyone an idea of how to download the mp3 file from an url and then store it, either on the iphone or in the application (depending on what is possible).
Add the following import statement to your header:
#import <AVFoundation/AVFoundation.h>
In your implementation somewhere:
NSError *error;
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://xyz/abc.mp3"]];
audioPlayer = [[AVAudioPlayer alloc] initWithData:_objectData error:&error];
audioPlayer.numberOfLoops = -1;
audioPlayer.delegate = self;
audioPlayer.volume = 1.0f;
[audioPlayer prepareToPlay];
if (audioPlayer == nil)
NSLog(#"%#", [error description]);
else
[audioPlayer play];
Don't forget to release the player at some point:
[audioPlayer release];
dirt simple, on a thread:
myMP3 = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://..."]];
slightly less simple, but with more options:
[NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://..."]] delegate:self];
Or just play it directly:
[[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:#"http://..."] error:nil] play];
Edit: the above snippet would leak. You should store the created AVAudioPlayer instance in a member and release it when the audio finishes playing or you are otherwise done with it. I do not know off hand if releasing a playing AVAudioPlayer stops the audio.