I'm wondering if this is a bug in the iOS framework. The NSURLCache setMemoryCapacity: method is being called with 0 and making it stop caching.
I'm seeing this happen when presenting a UIWebView. I'm using SDURLCache and overrode setMemoryCapacity: and put a breakpoint there if the memoryCapacity passed in was zero so I could see who was clearing it:
(gdb) bt
#0 -[SDURLCache setMemoryCapacity:] (self=0x18fc80, _cmd=0x347fee55, memoryCapacity=0) at /Users/me/Documents/Work/Clients/Joe/iphone-TESTapp/SDURLCache/SDURLCache.m:447
#1 0x33ddac3e in +[WebView(WebFileInternal) _setCacheModel:] ()
#2 0x33dda388 in +[WebView(WebFileInternal) _preferencesChangedNotification:] ()
#3 0x30ec27a4 in __invoking___ ()
#4 0x30e3a43c in -[NSInvocation invoke] ()
#5 0x36493c3c in SendMessage ()
#6 0x36493c14 in HandleAPISource ()
#7 0x30e96a78 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ ()
#8 0x30e986a2 in __CFRunLoopDoSources0 ()
#9 0x30e994ea in __CFRunLoopRun ()
#10 0x30e29ec2 in CFRunLoopRunSpecific ()
#11 0x30e29dca in CFRunLoopRunInMode ()
#12 0x36492284 in RunWebThread ()
#13 0x35ba5310 in _pthread_start ()
#14 0x35ba6bbc in thread_start ()
Some kind of preferences change getting posted? I see the cacheModel stuff in WebPreferences.h which is only Mac OS X SDK :-(
So, Ideally we'd have some way to set the Caching policy but I don't know how to do that. I don't understand why it's picking up a cache model such that no caching is occurring.
Anyone know how to set the caching model for an iOS app to something more like WebCacheModelPrimaryWebBrowser?
This is similar to NSURLCache Memory Size is zero but I'm hoping that by providing more details I might get an answer...
