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2014/10/15 ¤U¤È 10:04:59
iphone Programming Glossary: cfgetretaincounthttp://stackoverflow.com/questions/2376979/sent-to-deallocated-instance is the backtrace gdb bt #0 0x01fcd3a7 in ___forwarding___ #1 0x01fa96c2 in __forwarding_prep_0___ #2 0x01fc10e8 in CFGetRetainCount #3 0x01cbc770 in CA release_root_if_unused #4 0x01cbc707 in x_hash_table_remove_if #5 0x01cbc4ec in CA Transaction commit..
Rotate image on center using one finger touch http://stackoverflow.com/questions/5468559/rotate-image-on-center-using-one-finger-touch
Memory usage grows with CTFontCreateWithName and CTFramesetterRef http://stackoverflow.com/questions/8491841/memory-usage-grows-with-ctfontcreatewithname-and-ctframesetterref path Is there some sort of cache I really need to flush the memory used by this font immediately. P.S I used CFGetRetainCount to get the retain count of the font. Thanks iphone objective c ios fonts core text share improve this question retainCount..
How do I verify reference count in ARC mode? http://stackoverflow.com/questions/8863269/how-do-i-verify-reference-count-in-arc-mode so is there an alterante solution iphone ios automatic ref counting share improve this question You can use CFGetRetainCount with Objective C objects even under ARC NSLog @ Retain count is ld CFGetRetainCount __bridge CFTypeRef myObject This is.. this question You can use CFGetRetainCount with Objective C objects even under ARC NSLog @ Retain count is ld CFGetRetainCount __bridge CFTypeRef myObject This is not particularly useful for debugging though for reasons amply described elsewhere ... immediately inside the @autoreleasepool in main NSNumber n0 NSNumber alloc initWithInt 0 NSLog @ 0 reference count ld CFGetRetainCount __bridge CFTypeRef n0 Prints 2 in my test So NSNumber likely caches or at least reuses some instances. But not others n0..
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