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2014/10/15 ¤U¤È 10:13:23
iphone Programming Glossary: responsivenessHow Can I Record the Screen with Acceptable Performance While Keeping the UI Responsive? http://stackoverflow.com/questions/14343606/how-can-i-record-the-screen-with-acceptable-performance-while-keeping-the-ui-res rendered on the main thread there's more UI contention than I'd like. What I'd like to do is to have a setup where the responsiveness of the UI is prioritized over the screen capture. For instance if the user is scrolling the Web view I'd rather drop frames..
http://stackoverflow.com/questions/14659563/to-drawrect-or-not-to-drawrect-when-should-one-use-drawrect-core-graphics-vs-su as I think I get the idea Favor Core Graphics when possible I start seeing that drawRect is often responsible for poor responsiveness in an app is extremely expensive memory wise and really taxes the CPU. Basically that I should Avoid overriding drawRect..
Background threads consuming 100% CPU on iPhone 3GS causes latent main thread http://stackoverflow.com/questions/1940903/background-threads-consuming-100-cpu-on-iphone-3gs-causes-latent-main-thread cannot have more than two or three background network threads and have the UI stay fully responsive. Optimize for user responsiveness it's the only thing a user really notices. Or and I really hate to say this add a Turbo button to your app that puts up..
iPhone SDK: How do you download video files to the Document Directory and then play them? http://stackoverflow.com/questions/2572529/iphone-sdk-how-do-you-download-video-files-to-the-document-directory-and-then-p NSData data NSData dataWithContentsOfURL movieUrl data writeToURL movieUrl atomically YES But it is better for app responsiveness etc to download asynchronously NSURLRequest theRequest NSURLRequest requestWithURL movieUrl cachePolicy NSURLRequestReloadIgnoringLocalCacheData..
Saving core data in a thread, how to ensure its done writing before quitting? http://stackoverflow.com/questions/2596087/saving-core-data-in-a-thread-how-to-ensure-its-done-writing-before-quitting time to save like .2 seconds but I'm doing it while the user is flipping through a scroll view so in order to improve responsiveness I'm moving the saving to a thread. This works great everything gets saved and the app is responsive. However there is one..
http://stackoverflow.com/questions/3249897/get-content-of-webservice
How should I architect my iPhone app to talk to my website? http://stackoverflow.com/questions/3943597/how-should-i-architect-my-iphone-app-to-talk-to-my-website Download data somewhere temporarily and first when you have it all make a switch and update user interface. This helps responsiveness during launching the app user gets to work immediately with data stored locally while the update mechanism is downloading..
Keep uitableview static when inserting rows at the top http://stackoverflow.com/questions/4279730/keep-uitableview-static-when-inserting-rows-at-the-top share improve this question @Dean's way of using an image cache is too hacky and I think it destroys the responsiveness of the UI. One proper way Use a UITableView subclass and override setContentSize in which you can by some means calculate..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now down . why does it happen you can see with the controversial TOMSWIFT method there is actually no problem at all with responsiveness. tap for response at any time. but still the bizarre progressive slow down problem So the overwhelming thing is this weird.. loop to come to completion in the middle of operations performed on the main thread. However this still may reduce the responsiveness of your application. In general it is recommended that you move anything that takes a while to perform to a background thread..
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone is considered one of the common modes. Spending too much time interrupting UIKit can lead to some very poor control responsiveness so you need to be careful. It'd be to diverge from the topic massively but although OpenGL is modal and therefore not particularly..
Applying Effect to iPhone Camera Preview “Video” http://stackoverflow.com/questions/4893620/applying-effect-to-iphone-camera-preview-video As Brad pointed out Apple recommends image processing be on a background thread so as to not interfere with the UI responsiveness. I didn't notice much lag in this case but best practices are best practices so use the above solution with autorelease..
How to make ui responsive all the time and do background updating? http://stackoverflow.com/questions/5133731/how-to-make-ui-responsive-all-the-time-and-do-background-updating gives a bad user experience How can i create the thumbnails and add them to UIScrollview without affecting the touch responsiveness I want them to run independent of the main thread which is resposible for handling touch events i suppose . Also i would..
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