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2014/10/15 ¤U¤È 10:13:39
iphone Programming Glossary: screen'sTouchMoved and wrong screen range? or Bug in iOS? http://stackoverflow.com/questions/13222013/touchmoved-and-wrong-screen-range-or-bug-in-ios NSLog @ @ NSStringFromCGPoint point so u can detect points of your touch So if u try to move finger on display from screen's top to bottom portrait mode you get points in range 5.5 .. 469 ... i can't explain this it happens only on device in simulator..
How 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 looking for help with a performance issue in an Objective C based iOS app. I have an iOS application that captures the screen's contents using CALayer's renderInContext method. It attempts to capture enough screen frames to create a video using AVFoundation... So far they all seem to perform about the same. The frame capture is currently being triggered in the drawRect of the screen's main view. What I'm asking here is given the above what techniques would you suggest I try to achieve my goals I realize..
Navigation bar appear over the views with new iOS7 SDK http://stackoverflow.com/questions/18103715/navigation-bar-appear-over-the-views-with-new-ios7-sdk appearing below the navigation bar and status bar. I know I could account for the height myself by getting the main screen's height subtracting the status bar's height and navigation bar's height but that seems like unnecessary extra work. Has anyone..
How to get an x and a y for a CGRect to initialize a control with a frame? http://stackoverflow.com/questions/2315169/how-to-get-an-x-and-a-y-for-a-cgrect-to-initialize-a-control-with-a-frame hardcoding the size of the screen in the app like 480 2 . Instead use the UIScreen's shared object to get the current screen's size like this example to position a UIView in the center of the screen any screen iPhone iPad iPad external screen myView.center..
UIImagePickerController doesn't fill screen http://stackoverflow.com/questions/2674375/uiimagepickercontroller-doesnt-fill-screen the window. iphone uiimagepickercontroller share improve this question The camera's aspect ratio is 4 3 and the screen's aspect ratio is 3 2. So there is simply no way for the camera picture to fill the screen unless you're willing to crop is..
http://stackoverflow.com/questions/3504173/detect-retina-display the displayLinkWithTarget selector method on the main screen which exists in iOS4.x but not iOS3.2 and then check the screen's scale if UIScreen mainScreen respondsToSelector @selector displayLinkWithTarget selector UIScreen mainScreen .scale 2.0..
in iPhone App How to detect the screen resolution of the device http://stackoverflow.com/questions/4779221/in-iphone-app-how-to-detect-the-screen-resolution-of-the-device touch share improve this question CGRect screenBounds UIScreen mainScreen bounds That will give you the entire screen's resolution in points so it would most typically be 320x480 for iPhones. Even though the iPhone4 has a much larger screen.. screenSize CGSizeMake screenBounds.size.width screenScale screenBounds.size.height screenScale By multiplying by the screen's scale you get the actual pixel resolution. The usefulness of this code is that it will work in later products by Apple such..
Building with LLVM and any optimization causes app to crash on startup http://stackoverflow.com/questions/5490432/building-with-llvm-and-any-optimization-causes-app-to-crash-on-startup the crash happened in. The device console shows some NSLog statements that our app makes at startup then the first screen's UI is loaded and drawn and after that the crash happens. Building with no optimizations or building with GCC 4.2 with any..
How do you pop a modal view and the previous navigation controller view at once? http://stackoverflow.com/questions/8108422/how-do-you-pop-a-modal-view-and-the-previous-navigation-controller-view-at-once about popping the modal view as you would normally then posting an NSNotification to the ' Event ' for instance screen's UIViewController subclass and telling it to pop that view as well. The other thing is that for the animation it should be..
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