Download audio and not able to play it with AVAudioPlayer - ios

Question

I am downloading an audio file from a server with the help of AFNetworking. The file is getting downloaded successfully as I ma able to see it through a progress block.
I am storing it in the Documents directory but then I am not able to play it.
Here is my code:-
-(void)downloadAudioFileFromUrl:(NSString *)str_url{
[SVProgressHUD show];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:str_url]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"momentsAudioToast.mp3"];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file to %#", path);
[SVProgressHUD dismiss];
if ([[NSFileManager defaultManager] fileExistsAtPath:path]) {
[self playSound:path];
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
[SVProgressHUD dismiss];
}];
[operation setDownloadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
//[progressView setProgress: totalBytesWritten*1.0f / totalBytesExpectedToWrite animated: YES];
NSLog(#"downloaded %lld of %lld bytes and progress is %f", totalBytesWritten, totalBytesExpectedToWrite, totalBytesWritten*1.0f / totalBytesExpectedToWrite);
if(totalBytesWritten >= totalBytesExpectedToWrite)
{
//progressView.hidden = YES;
}
}];
[operation start];
}
- (void)playSound:(NSString *)path {
[self.player prepareToPlay];
//UIButton *audioButton = (UIButton *)sender;
//[audioButton setImage:[UIImage imageNamed:#"sound_preview.png"] forState:UIControlStateNormal];
NSData *audioData = [NSData dataWithContentsOfFile:path options: 0 error:nil];
self.player = [[AVAudioPlayer alloc] initWithData:audioData error:nil];
double duration = [self.player duration];
NSLog(#"%f", duration);
NSError * error;
self.player.delegate = self;
self.player.numberOfLoops = 0;
if (error) {
NSLog(#"Error: %#",[error description]);
}
else {
self.player.delegate = self;
[self.player play];
}
}
Please help if I am doing something wrong.
Thanks in advance.

Answer 1

First, ensure that you are keeping strong reference to AVAudioPlayer instance player like this:
#property (nonatomic, strong) AVAudioPlayer *player;
Second, most likely, it would be path related issue. Try rebuilding the path while playing.
Third,, double check if file physically exists and that it plays when you play it in any audio player.

Answer 2

In Your case if you declare audio player perfect.
And Also set delegate & if you get NSData from audio file from web service.
Then you need to insert one more line of code and check again.
[self.player setVolume: 1.0];