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2014/10/15 ¤U¤È 10:10:14
iphone Programming Glossary: improvementCocoa Touch: When does an NSFetchedResultsController become necessary to manage a Core Data fetch? http://stackoverflow.com/questions/1263723/cocoa-touch-when-does-an-nsfetchedresultscontroller-become-necessary-to-manage I've used it for it significantly reduced the amount of code I had to write. Performance wise it can lead to a huge improvement as well. Rather than fetching in your entire data set if you use setFetchBatchSize with the NSFetchRequest that you feed..
What does the Tiler Utilization statistic mean in the iPhone OpenGL ES instrument? http://stackoverflow.com/questions/1287811/what-does-the-tiler-utilization-statistic-mean-in-the-iphone-opengl-es-instrumen aren ™t covering the range you need. These sorts of techniques might require additional draw calls but I suspect the improvement in vertex throughput will outweigh the extra per draw call CPU overhead. Note that it ™s generally beneficial on MBX and..
How to optimize Core Data query for full text search http://stackoverflow.com/questions/1774369/how-to-optimize-core-data-query-for-full-text-search predicateWithFormat @ rowid IN @ rowids . I avoid traversing any many to many relationships this way. The performance improvement is dramatic. My dataset is 142287 rows comprising 194MB Core Data and 92MB FTS with stopwords removed . Depending on the..
Set the location in iPhone Simulator http://stackoverflow.com/questions/214416/set-the-location-in-iphone-simulator
http://stackoverflow.com/questions/3377488/unable-to-open-database get better performance if you open the database once and close it once. Anyway that was a suggestion for a design improvement. What is actually wrong in your code is the finally block @finally sqlite3_close PatientDatabase will fail sqlite3_finalize..
Scroll view and table view performance when loading images from disk http://stackoverflow.com/questions/3756863/scroll-view-and-table-view-performance-when-loading-images-from-disk hit is due to either loading a large image from disk or loading a large image into an UIImage object. I guess one improvement would be to reduce the size of the images being loaded into the scroll view and table views which was what I was planning..
What are some great iPhone questions for exercise? [closed] http://stackoverflow.com/questions/3993181/what-are-some-great-iphone-questions-for-exercise Delegation pattern how to implement your own delegates using either a formal or informal protocol Blocks often an improvement on delegation in case of asynchronous calls also useful in many other ways Passing NSErrors through indirection pointers...
http://stackoverflow.com/questions/4914853/help-fix-memory-leak-release
How does Sencha Touch + PhoneGap perform compared to native apps in terms of speed? http://stackoverflow.com/questions/5220377/how-does-sencha-touch-phonegap-perform-compared-to-native-apps-in-terms-of-spe HTML should guarantee feature rich easy to use framework always. And most of optimizations which makes performance improvement are trade off between feature and simplicity. However in iOS 4.3 Mobile Safari's performance is improved. But I don't believe..
http://stackoverflow.com/questions/5541660/iphone-ipad-gyroscope applications of the gyroscope on the iPhone iPad does it serve the similar function as the accelerometer but like an improvement to the accelerometer What is the practical use of it iphone ipad gyroscope share improve this question An accelerometer..
How can I improve the performance of my custom OpenGL ES 2.0 depth texture generation? http://stackoverflow.com/questions/6051237/how-can-i-improve-the-performance-of-my-custom-opengl-es-2-0-depth-texture-gener for my test model. I consider that to be about as good as I could hope for in this rendering case and a giant improvement from where I started. For posterity here is the depth shader I'm now using precision mediump float varying mediump vec2..
UIImage in uitableViewcell slowdowns scrolling table http://stackoverflow.com/questions/6408434/uiimage-in-uitableviewcell-slowdowns-scrolling-table
How to do animations using images efficiently in iOS http://stackoverflow.com/questions/8112698/how-to-do-animations-using-images-efficiently-in-ios imgView startAnimating imgView release imgView stopAnimating imageArray nil imageArray release Can anyone suggest any improvement in the code so that the animations can be efficiently done or is there any other alternative like openGL or Core Animation..
How to pass sender tag in DetailView to get default Map application for direction? http://stackoverflow.com/questions/8256288/how-to-pass-sender-tag-in-detailview-to-get-default-map-application-for-directio it annView . I am not sure what BcardView is and why you're checking if it's hidden or not. I'd also suggest a slight improvement to the viewForAnnotation method use a non blank re use id and move the setting of the properties that don't change to inside..
Is it faster to create UITableViewCell programmatically or load one from a nib? http://stackoverflow.com/questions/8484708/is-it-faster-to-create-uitableviewcell-programmatically-or-load-one-from-a-nib
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