how to play an audio from directory file in xcode? - ios

Question

i'm trying to design audio streaming app everything is working, but i don't know how to download audio file to the device and read it afterword.
Download audio to document directory.
play it back from document directory.
Added code:
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = [path firstObject];
NSString *filePath = [documentDirectory stringByAppendingPathComponent:#"evet.mp3"];
// UIImage *cellImage = [[UIImage alloc] initWithContentsOfFile:filePath];
NSLog(#"%#",filePath);
NSError *error;
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:filePath]];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:_objectData error:&error];
[audioPlayer play];

Answer 1

Based on the code you posted try this.
Change
NSData *_objectData = [NSData dataWithContentsOfURL:[NSURL URLWithString:filePath]];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:_objectData error:&error];
to this:
NSURL *fileURL = [NSURL fileURLWithPath:filePath isDirectory:NO];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL error:&error];
AVAudioPlayer wants a URL object (which needs to be a local URL not a remote web address, hence fileURLWithPath:) not the data itself.
You were trying to give the NSData itself to the audio player.

Answer 2

Fetch your audio file in document directory
- (NSString *)getCacheDirectoryPathForAudio:(NSString *)filePath
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES); //create an array and store result of our search for the documents directory in it
NSString *documentsDirectory = [paths objectAtIndex:0]; //create NSString object, that holds our exact path to the documents directory
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.mp3", filePath]]; //add
return fullPath;
}
Initiate player with file path
NSString *pathToSaveAudioString = [self getCacheDirectoryPathForAudio:#“filename”];
NSURL* url = [NSURL fileURLWithPath:pathToSaveAudioString];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:pathToSaveAudioString];
if (fileExists) {
NSError* error = nil;
self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
[self.player setDelegate:self];
if(!self.player)
{
NSLog(#"Error creating player: %#", error);
}
}
else
{
NSLog(#“File Not Exist: %#");
}
and play it using
[self.player play];
Use Delegate methods to check status
#pragma mark - AVAudioPlayerDelegate
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
}
- (void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error
{
}
For more details follow
http://iosdeveloperzone.com/2012/10/01/tutorial-playing-audio-with-avaudioplayer/

Answer 3

I have simple code
NSData *D = [self FindDatafromDocument:#"ASDF"];
player = [[AVAudioPlayer alloc] initWithData:D error:nil];
[player setDelegate:self];
[player play];
Method
- (NSData *)FindDatafromDocument:(NSString *)Name {
NSData *IMG;
NSError *error;
NSArray *directoryContents = [[NSArray alloc] init];
directoryContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[Utility getDocumentDirectory] error:&error];
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains[c] %#",Name];
NSArray *ArrImages = [directoryContents filteredArrayUsingPredicate:predicate];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *Doc = [paths objectAtIndex:0];
for (NSString *imageName in ArrImages) {
if ([imageName rangeOfString:#".caf"].location != NSNotFound) {
IMG = [[NSFileManager defaultManager] contentsAtPath:[NSString stringWithFormat:#"%#/%#",Doc,imageName]];
}
}
return IMG;
}