iOS SDK: make networkActivityIndicatorVisible behave as a semaphore

Originator:marcelofabri.mf
Number:rdar://14500301 Date Originated:19-Jul-2013 09:59 PM
Status:Duplicate/7827522 Resolved:
Product:iPhone SDK Product Version:6.1
Classification:Feature (New) Reproducible:Always
 
This is a duplicate of rdar://7827522

Summary:
iOS SDK: make networkActivityIndicatorVisible behave as a semaphore

Currently, networkActivityIndicatorVisible is a BOOL, simply YES or NO. This forces developers to create their own semaphore-style code to track number of active network connections and hide the indicator once all requests are complete.

This in itself is not onerous, but when incorporating third-party code that also wants to be a good citizen and display the indicator appropriately, the separate implementations will interfere with each other, most notably hiding the indicator when requests are still active.

Providing a standard "increment/decrement requests" functionality to the framework would allow developers to easily incorporate shared code and have this behavior "just work."

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