I have been implementing background uploads and downloads and using AFNetworking to handle the tasks.

Part of this is that I have a tableview that shows the current state of filetransfers.

When I create the tableview cell I add a UIProgressView (from the AFNetworking Category) to the cell.

I then assign the task for it to track the progress of like below.


    [taskProgressView setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)self.task animated:YES];

However when I navigate away from the View controller that has the tableview, I get the following issue.

*** -[UIProgressView retain]: message sent to deallocated instance 0x65a6cced0

In the code I have tried to dealloc everything I can, setup reuse of cells, and remove any notification observers I have. However this still happens.

The only way I have managed to stop this is to not assign the task to the UIProgressView.

You can find the Category for the UIProgressView (AFNetworking here)

My assumption is that in there something is still retaining a reference to the progress view and not releasing it correctly.

Any suggestions of what to try next are appreciated.

iphone