¡@
2014/10/15 ¤U¤È 10:11:57
iphone Programming Glossary: negativeHow can I enforce an specific direction (i.e. clockwise) of rotation in Core Animation? http://stackoverflow.com/questions/1149635/how-can-i-enforce-an-specific-direction-i-e-clockwise-of-rotation-in-core-ani layer addAnimation animation forKey @ transform.rotation.z If you're after counterclockwise animation you should use negative values. For a slightly more basic animation you can use CABasicAnimation CALayer layer someView.layer CABasicAnimation animation..
http://stackoverflow.com/questions/12418412/share-screen-ios-6 now how iphone ios xcode ios6 share improve this question I'm afraid you are all wrong. I'm sorry for being this negative but your wrong answers forced me to waste time in going for futile solutions.... instead you can use this code to achive..
What's the difference between NSNumber and NSInteger? http://stackoverflow.com/questions/1285098/whats-the-difference-between-nsnumber-and-nsinteger as NSInteger but I think another critical reason to choose between the two is simply to distinguish among cases where negative values simply do not make sense . Example the return value of NSArray 's count method is an NSUInteger which makes sense.. the return value of NSArray 's count method is an NSUInteger which makes sense since we cannot have an array with a negative number of elements. When the coder knows it's unsigned he she has more freedom to perform operations that might be unreliable..
How to Get time difference in iPhone http://stackoverflow.com/questions/1427151/how-to-get-time-difference-in-iphone the last value is in hundredsth of a sec. A question. If the second date is larger than the first will it give me a negative number like 01 10 00 iphone objective c nsdate nstimeinterval share improve this question Your problem has two parts..
Programmatically get own phone number in iOS http://stackoverflow.com/questions/193182/programmatically-get-own-phone-number-in-ios APIs from iPhone SDK iphone ios mobile phones phone number share improve this question At the risk of getting negative marks I want to suggest that the highest ranking solution currently the first response violates the latest SDK Agreement..
Displaying ppt, doc, and xls in UIWebView doesn't work but pdf does http://stackoverflow.com/questions/2520137/displaying-ppt-doc-and-xls-in-uiwebview-doesnt-work-but-pdf-does I tried to research the error code displayed in didFailLoadWithError 100 but all the documented error codes are negative and greater than 1000 as seen in NSURLError.h . void webView UIWebView webView didFailLoadWithError NSError error NSLog..
How to detect iPhone movement in space using accelerometer? http://stackoverflow.com/questions/2674717/how-to-detect-iphone-movement-in-space-using-accelerometer interval 230 If I execute this I get quite good values I mean I can see the acceleration going into positive or negative values according to the movements I make. But when I try to apply that position to my ball view I can see it is moving but..
Can iPad/iPhone Touch Points be Wrong Due to Calibration? http://stackoverflow.com/questions/2733868/can-ipad-iphone-touch-points-be-wrong-due-to-calibration nil NSLog @ touchesMoved at location @ NSStringFromCGPoint location When I touch the edges of the screen it reports negative numbers on the x axis and never hits 0 on the y axis. Adding some variables to keep track of max and min gives me these..
http://stackoverflow.com/questions/3231690/inner-shadow-in-uilabel CGSizeMake 0 1 1.0f UIColor colorWithWhite 0.0 alpha 0.5 CGColor cutout drawAtPoint CGPointZero create negative image UIGraphicsBeginImageContextWithOptions rect.size NO 0 UIColor blackColor setFill custom shape goes here text_ drawAtPoint.. custom shape goes here text_ drawAtPoint CGPointMake self.bounds.size.width 2 fontSize.width 2 1 withFont font UIImage negative UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext CGImageRef innerShadowRef CGImageCreateWithMask negative.CGImage.. UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext CGImageRef innerShadowRef CGImageCreateWithMask negative.CGImage shadedMask CGImageRelease shadedMask UIImage innerShadow UIImage imageWithCGImage innerShadowRef scale UIScreen..
How can I programmatically pause an NSTimer? http://stackoverflow.com/questions/347219/how-can-i-programmatically-pause-an-nstimer the method timeIntervalSinceNow in the NSDate class to store how much time has passed... note that this will give a negative value for timeIntervalSinceNow. When the user returns use that value to set an appropriate timer. I don't think there's..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview math has never been my thing so I can't explain exactly why this works but it does. You'll need to set this value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the..
iPhone SDK 4 AVFoundation - How to use captureStillImageAsynchronouslyFromConnection correctly? http://stackoverflow.com/questions/3847140/iphone-sdk-4-avfoundation-how-to-use-capturestillimageasynchronouslyfromconnec UIImage . This was sufficient for our image processing needs &mdash take picture exists largely so the user can get a negative response and an option to submit a bug report we don't actually want 2 3 5 megapixel images since they take ages to process...
CLLocation Category for Calculating Bearing w/ Haversine function http://stackoverflow.com/questions/3925942/cllocation-category-for-calculating-bearing-w-haversine-function degrees return degrees M_PI 180.0 double RadiansToDegrees double radians return radians 180.0 M_PI If you are getting negative bearings add 2 M_PI to the final result in radiansBearing or 360 if you do it after converting to degrees . atan2 returns..
http://stackoverflow.com/questions/4130821/iphone-compass-gps-direction multiplying by 180 . The value is then between 180 and 180 degrees so to get a standard compass bearing add 360 to any negative answers. atan2 is a standard function related to arctan that does the right thing for the four possible quadrants that your..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion of returning the object to the original position after an acceleration. Since the acceleration goes from positive to negative or vice versa . They did it like this translation.x userAcceleration.x translation.y userAcceleration.y translation.z userAcceleration.z..
Aligning text and image on UIButton with imageEdgeInsets and titleEdgeInsets http://stackoverflow.com/questions/4564621/aligning-text-and-image-on-uibutton-with-imageedgeinsets-and-titleedgeinsets trying to configure this with contentEdgeInset imageEdgeInsets and titleEdgeInsets to no avail. I understand that a negative value expands the edge while a positive value shrinks it to move it closer to the center. I tried button setTitleEdgeInsets..
How to adjust UIToolBar left and right padding http://stackoverflow.com/questions/6021138/how-to-adjust-uitoolbar-left-and-right-padding I had the same issue and theres a neat trick you can do with a UIBarButtonSystemItemFixedSpace add one of these with a negative width before your first button and after you last button and it will move the button to the edge. For example to get rid.. For example to get rid of the right hand margin add the following FixedSpace bar item as the last item UIBarButtonItem negativeSeperator UIBarButtonItem alloc initWithBarButtonSystemItem UIBarButtonSystemItemFixedSpace target nil action nil negativeSeperator.width.. UIBarButtonItem alloc initWithBarButtonSystemItem UIBarButtonSystemItemFixedSpace target nil action nil negativeSeperator.width 12 The margins on the left and right are 12px. Update for iOS7 margins are 16px on iPhone and 20px on iPad..
Transparent Modal View on Navigation Controller http://stackoverflow.com/questions/849458/transparent-modal-view-on-navigation-controller cover the entire view below it. I tried playing around with the origin of the frame used to init the modalView but negative values cause it to not display. The best method that I found to cover the entire screen besides the status bar is to add..
|