Completion handler is not called on iOS7 GM

Question

I'm using AVAssetWriter, and it is perfectly working on iOS6.

The problem is, when I called finishWritingWithCompletionHandler, the completion handler is not called on iOS7 GM.

I called markAsFinished, and even endSessionAtSourceTime before I call finishWritingWithCompletionHandler.

It works fine on iOS6.

And even more, on iOS7, it works some times, and then it doesn't work again.

I don't know why, but it works if I call the method using alert view. So I tried performSelectorOnMainThread and inBackground, but it didn't help.

Any ideas?

Answer 1

Apparently you need to retain the assetWriter now.

You might try retaining with a strong property it and see if your completion handler gets called. (Be sure to nil that property in completion handler.)