CODEWITHSUNDEEP
iphonecocoa-touchcore-audio
pix0r
pix0r

Reputation: 31280

AVAudioPlayer initialization: error code -50

I recently ran into a problem that I couldn't find discussed anywhere on the internet - I was initializing an AVAudioPlayer to play an audio file, and getting the following error:

Error Domain=NSOSStatusErrorDomain Code=-50 "Operation could not be completed. (OSStatus error -50.)

As it turns out, I had made a mistake creating my NSURL to send to the audio player init method, resulting in the NSURL object being null. Stupid mistake, pretty easy to find when debugging, but I thought I'd list it here just in case someone else does the same thing.

Upvotes: 16

Views: 16606

Answers (4)

Revanth Matha
Revanth Matha

Reputation: 69

I'm adding my version of the issue and solution because I encountered the error with a print statement. I think it was related to string interpolation and or trying to forcibly print nsattributedstrings. I attempted to do the following.

print("THE ARRAY COUNT IS : \(unwrappedResults.count)\n\n\n 
THE FULL ARRAY IS THE FIRST WHOLE RESULT IS: \(unwrappedResults)\n\n\n \ (unwrappedResults[0])\n

THE ATTRIBUTED FULL TEXT IS: \(unwrappedResults[0].attributedFullText)\n\n\n 
THE ATTRIBUTED PRIMARY TEXT IS: \(unwrappedResults[0].attributedPrimaryText)\n\n\n 
THE ATTRIBUTED SECONDARY TEXT IS: \(unwrappedResults[0].attributedSecondaryText)\n\n\n")

something about this was incorrect and no print would occur. I would receive the error following errors in my console.

boringssl_metrics_log_metric_block_invoke(131) Failed to log metrics & boringssl_metrics_log_metric_block_invoke(133) Error Domain=NSOSStatusErrorDomain Code=-50 "Unsupported xpc type" UserInfo={NSDescription=Unsupported xpc type}

I fixed this issue by changing the way I unwrapped/the variables values. Fundamentally I think I was trying to print something using string interpolation that could not be printed and that is what caused this error.

Upvotes: 0

Martin Lockett
Martin Lockett

Reputation: 2589

Regarding the comment from Brynjar: The Apple NSURL Class Reference describing URLWithString states

To create NSURL objects for file system paths, use fileURLWithPath:isDirectory: instead.

I have found that using URLWithString for file system paths generates the error reported by pix0r and therefore could be another explanation for error code = -50

Upvotes: 7

Jens Ayton
Jens Ayton

Reputation: 14558

“ OSStatus error -50” means paramErr, an old-style Mac error code indicating a bad parameter.

Upvotes: 19

pix0r
pix0r

Reputation: 31280

Make sure your NSURL is valid, or you will get error code -50 "Operation could not be completed".

Upvotes: 1

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