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2014/10/15 ¤U¤È 10:13:26
iphone Programming Glossary: reusesUITableViewCell Reuse and Images Re-render http://stackoverflow.com/questions/11232992/uitableviewcell-reuse-and-images-re-render I've seen that problem where cells in certain sections do not have an image but in other sections they do. So when it reuses the cell unless you specifically set the image property to nil... you could get an imaged that was previously laoded. UPDATE..
http://stackoverflow.com/questions/1816144/uipagecontrol-help
Determining the magnitude of a certain frequency on the iPhone http://stackoverflow.com/questions/2921674/determining-the-magnitude-of-a-certain-frequency-on-the-iphone frequency you can just calculate the corresponding point of the DFT . The DFT algorithm is O N^2 but the FFT algorithm reuses intermediate results to achieve O NlogN for computation of the DFT. However if you want only one frequency sample you can..
Loading a Reusable UITableViewCell from a Nib http://stackoverflow.com/questions/413993/loading-a-reusable-uitableviewcell-from-a-nib new instances of each cell at every call. Has anyone figured out a good way to still cache particular cell types for reuses but still be able to design them in Interface Builder iphone cocoa touch uitableview interface builder share improve..
Displaying Lots Of RichText : Choosing the best option http://stackoverflow.com/questions/6626294/displaying-lots-of-richtext-choosing-the-best-option . In this case having a UIWebView as a subview might not be as bad performance wise as you might think. UITableView reuses cells so really only the visible cells need be loaded into memory. I'm also assuming you are able to access the forum via..
How do I verify reference count in ARC mode? http://stackoverflow.com/questions/8863269/how-do-i-verify-reference-count-in-arc-mode 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 NSNumber alloc initWithInt 200 NSLog @ n0 reference count ld CFGetRetainCount __bridge..
Overriding highlighted selection in UIPickerView http://stackoverflow.com/questions/958443/overriding-highlighted-selection-in-uipickerview YES . Based on these requirements the example code from Halle can be rewritten as follows. This example also correctly reuses previously created views which is needed for fast scrolling performance. UIView pickerView UIPickerView pickerView viewForRow..
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