AVPlayer And Local Files - iphone

Question

I am building a MP3 player for iOS that plays audio files hosted on the web. I want to offer the ability to play the files offline so I have the files downloading using ASIHTTP but I am cannot seem to find info on initiallzing AVPlayer with a mp3 in the app documents directory. Has anyone done this before? Is it even possible?
*I posted an answer below that shows how to use the iOS AvPlayer for both local and http files. Hope this helps!

Answer 1

I decided to answer my own question because I felt like there is very little documentation on how to use the Apple provided AVPlayer for both local and stream (over http) files. To help understand the solution, I put together a sample project on GitHub in Objective-C and Swift The code below is Objective-C but you can download my Swift example to see that. It is very similar!
What I found is that the two ways of setting up the files are almost identical except for how you instantiate your NSURL for the Asset > PlayerItem > AVPlayer chain.
Here is an outline of the core methods
.h file (partial code)
-(IBAction) BtnGoClick:(id)sender;
-(IBAction) BtnGoLocalClick:(id)sender;
-(IBAction) BtnPlay:(id)sender;
-(IBAction) BtnPause:(id)sender;
-(void) setupAVPlayerForURL: (NSURL*) url;
.m file (partial code)
-(IBAction) BtnGoClick:(id)sender {
NSURL *url = [[NSURL alloc] initWithString:#""];
[self setupAVPlayerForURL:url];
}
-(IBAction) BtnGoLocalClick:(id)sender {
// - - - Pull media from documents folder
//NSString* saveFileName = #"MyAudio.mp3";
//NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//NSString *documentsDirectory = [paths objectAtIndex:0];
//NSString *path = [documentsDirectory stringByAppendingPathComponent:saveFileName];
// - - -
// - - - Pull media from resources folder
NSString *path = [[NSBundle mainBundle] pathForResource:#"MyAudio" ofType:#"mp3"];
// - - -
NSURL *url = [[NSURL alloc] initFileURLWithPath: path];
[self setupAVPlayerForURL:url];
}
-(void) setupAVPlayerForURL: (NSURL*) url {
AVAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];
AVPlayerItem *anItem = [AVPlayerItem playerItemWithAsset:asset];
player = [AVPlayer playerWithPlayerItem:anItem];
[player addObserver:self forKeyPath:#"status" options:0 context:nil];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
if (object == player && [keyPath isEqualToString:#"status"]) {
if (player.status == AVPlayerStatusFailed) {
NSLog(#"AVPlayer Failed");
} else if (player.status == AVPlayerStatusReadyToPlay) {
NSLog(#"AVPlayer Ready to Play");
} else if (player.status == AVPlayerItemStatusUnknown) {
NSLog(#"AVPlayer Unknown");
}
}
}
-(IBAction) BtnPlay:(id)sender {
[player play];
}
-(IBAction) BtnPause:(id)sender {
[player pause];
}
Check out the Objective-C source code for a working example of this.
Hope this helps!
-Update 12/7/2015 I now have a Swift example of the source code you can view here.

Answer 2

I got AVPlayer to work with local URL by prepending file:// to my local url
NSURL * localURL = [NSURL URLWithString:[#"file://" stringByAppendingString:YOUR_LOCAL_URL]];
AVPlayer * player = [[AVPlayer alloc] initWithURL:localURL];

Answer 3

Yes,thats possible to download and save the .mp3(or any kind of file)into NSDocument directory and then you can retrive from that and play by using AVAudioPlayer.
NSString *downloadURL=**your url to download .mp3 file**
NSURL *url = [NSURLURLWithString:downloadURL];
NSURLConnectionalloc *downloadFileConnection = [[[NSURLConnectionalloc] initWithRequest: [NSURLRequestrequestWithURL:url] delegate:self] autorelease];//initialize NSURLConnection
NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *fileDocPath = [NSStringstringWithFormat:#"%#/",docDir];//document directory path
[fileDocPathretain];
NSFileManager *filemanager=[ NSFileManager defaultManager ];
NSError *error;
if([filemanager fileExistsAtPath:fileDocPath])
{
//just check existence of files in document directory
}
NSURLConnection is used to download the content.NSURLConnection Delegate methods are used to support downloading.
(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
NSFileManager *filemanager=[NSFileManagerdefaultManager];
if(![filemanager fileExistsAtPath:filePath])
{
[[NSFileManagerdefaultManager] createFileAtPath:fileDocPath contents:nil attributes:nil];
}
NSFileHandle *handle = [NSFileHandlefileHandleForWritingAtPath:filePath];
[handle seekToEndOfFile];
[handle writeData:data];
[handle closeFile];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
UIAlertView *alertView=[[UIAlertViewalloc]initWithTitle:#”"message:
[NSStringstringWithFormat:#"Connection failed!\n Error - %# ", [error localizedDescription]] delegate:nilcancelButtonTitle:#”Ok”otherButtonTitles:nil];
[alertView show];
[alertView release];
[downloadFileConnectioncancel];//cancel downloding
}
Retrieve the downloaded Audio and Play:
NSString *docDir1 = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *myfilepath = [docDir1 stringByAppendingPathComponent:YourAudioNameinNSDOCDir];
NSLog(#”url:%#”,myfilepath);
NSURL *AudioURL = [[[NSURLalloc]initFileURLWithPath:myfilepath]autorelease];
Just write your code to play Audio by using AudioURL
I Like to know if u have any clarification in this regard.
Thank you

Answer 4

Try this
NSString*thePath=[[NSBundle mainBundle] pathForResource:#"yourVideo" ofType:#"MOV"];
NSURL*theurl=[NSURL fileURLWithPath:thePath];

Answer 5

Swift local playback version, assuming I have a file "shelter.mp3" in my bundle:
#IBAction func button(_ sender: Any?) {
guard let url = Bundle.main.url(forResource: "shelter", withExtension: "mp3") else {
return
}
let player = AVPlayer(url: url)
player.play()
playerView?.player = player;
}
See here for details about playerView or playing a remote url.

Answer 6

its very difficult to play a song using a Avplayer why you are not use a MPMoviePlayerController player . i have play song from document directory .i am posting a code pls refer this .its working fine .and also u directly from url live .
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *publicDocumentsDir = [paths objectAtIndex:0];
NSString *dataPath = [publicDocumentsDir stringByAppendingPathComponent:#"Ringtone"];
NSString *fullPath = [dataPath stringByAppendingPathComponent:[obj.DownloadArray objectAtIndex:obj.tagvalue]];
[[UIApplication sharedApplication] setStatusBarHidden:NO animated:NO];
NSURL *url = [NSURL fileURLWithPath:fullPath];
videoPlayer =[[MPMoviePlayerController alloc] initWithContentURL: url];
[[videoPlayer view] setFrame: [self.view bounds]];
[vvideo addSubview: [videoPlayer view]];
videoPlayer.view.frame=CGRectMake(0, 0,260, 100);
videoPlayer.view.backgroundColor=[UIColor clearColor];
videoPlayer.controlStyle = MPMovieControlStyleFullscreen;
videoPlayer.shouldAutoplay = YES;
[videoPlayer play];
videoPlayer.repeatMode=YES;
NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
[notificationCenter addObserver:self selector:#selector(moviePlayerEvent:) name:MPMoviePlayerLoadStateDidChangeNotification object:videoPlayer];
/* NSNotificationCenter *notificationCenter1 = [NSNotificationCenter defaultCenter];
[notificationCenter addObserver:self selector:#selector(moviePlayerEvent1:) name:MPMoviePlaybackStateStopped object:videoPlayer];
*/
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(playbackStateChange:)
name:MPMoviePlayerLoadStateDidChangeNotification
object:videoPlayer];
}
-(void)playbackStateChange:(NSNotification*)notification{
if([[UIApplication sharedApplication]respondsToSelector:#selector(setStatusBarHidden: withAnimation:)])
{
[[UIApplication sharedApplication] setStatusBarHidden:NO
withAnimation:UIStatusBarAnimationNone];
}
else
{
[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];
}
}
-(void)moviePlayerEvent:(NSNotification*)aNotification{
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:NO];
}
-(void)moviePlayerEvent1:(NSNotification*)aNotification{
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:NO];
}