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2014/10/15 ¤U¤È 10:12:49
iphone Programming Glossary: positivePlay/Forward video in 2x 3x 4x speed - iPhone SDK http://stackoverflow.com/questions/10514185/play-forward-video-in-2x-3x-4x-speed-iphone-sdk currentPlaybackRate A value of 0 represents that the video is stopped a value of 1 indicates normal speed and further positive values indicate increased speed while negative ones indicate reverse . Also check your endseeking delegate method of MPMediaPlayback..
UITableViewCell's imageView fit to 40x40 http://stackoverflow.com/questions/1055495/uitableviewcells-imageview-fit-to-40x40 when an imags is showed in tableView but stretched on a half of a screen. I played with several properties but have no positive result cell.imageView setBounds CGRectMake 0 0 50 50 cell.imageView setClipsToBounds NO cell.imageView setFrame CGRectMake..
What's the difference between NSNumber and NSInteger? http://stackoverflow.com/questions/1285098/whats-the-difference-between-nsnumber-and-nsinteger improve this question The existing answers are useful adding to them Yes NSUInteger gives twice the range among positive integers as NSInteger but I think another critical reason to choose between the two is simply to distinguish among cases..
Verify receipt for in App purchase http://stackoverflow.com/questions/1298998/verify-receipt-for-in-app-purchase recording the transaction on your remote server call verifyReceipt with your transaction and make sure it comes back positive. Meanwhile on your server here's some super stripped down PHP to handle things receipt json_encode array receipt data _GET..
Boundry detect paper sheet opencv http://stackoverflow.com/questions/13493035/boundry-detect-paper-sheet-opencv contours i approx arcLength Mat contours i true 0.02 true Note absolute value of an area is used because area may be positive or negative in accordance with the contour orientation if approx.size 4 fabs contourArea Mat approx 1000 isContourConvex..
CGAffineTransformMakeRotation counter clockwise always http://stackoverflow.com/questions/13791582/cgaffinetransformmakerotation-counter-clockwise-always always going to be counter clockwise if the toValue is less than the fromValue. It doesn't matter if your values are positive or negative only the relation between them. Figure out what your starting angle is figure out which direction you want to..
Custom UIPickerView with three Components each showing label on Selection Indicator http://stackoverflow.com/questions/16734557/custom-uipickerview-with-three-components-each-showing-label-on-selection-indica whiteColor label.shadowOffset CGSizeMake 0 1 Tag cannot be 0 so just increment component number to esnure we get a positive NB update remove Label methods are aware of this incrementation label.tag component 1 if addlabelView and now for the..
http://stackoverflow.com/questions/2117940/iphone-force-rotation already laid out for landscape prior to it being opened Thanks in advance iphone share improve this question I'm positive that you cannot 'force' a rotation. The system decides when to change the orientation of the device so the 'orientation'..
How to detect iPhone movement in space using accelerometer? http://stackoverflow.com/questions/2674717/how-to-detect-iphone-movement-in-space-using-accelerometer velocity.y 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..
http://stackoverflow.com/questions/2941596/nsarray-containobjects-method collection containsObject tempItem NSLog @ collection contains this item I suppose the above checking will give me a positive result but it's not. Further I checked whether the objects created are the same. NSLog @ L i W i H i itemToCheck.length..
How do you create a wiggle animation similar to iphone deletion animation http://stackoverflow.com/questions/3703922/how-do-you-create-a-wiggle-animation-similar-to-iphone-deletion-animation the wobble can look a little unbalanced. If you get this same issue then you may want to add both a negative and a positive rotation by using a CAKeyframeAnimation rather than a CABasicRotation CAAnimation getShakeAnimation CAKeyframeAnimation..
how to rotate CALayer at one point http://stackoverflow.com/questions/3926923/how-to-rotate-calayer-at-one-point rotationPoint.x center.y rotationPoint.y 0.0 Where center is the center of your layer rotationAngle is in radians positive is counterclockwise and rotationPoint is the point about which you wish to rotate. center and rotationPoint are in the coordinate..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion the result 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..
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 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 UIEdgeInsetsMake 0 image.size.width..
iphone - core motion range of yaw, pitch and roll http://stackoverflow.com/questions/5004548/iphone-core-motion-range-of-yaw-pitch-and-roll gravity on it just grab gravity.z. It will be negative if the device's display is tilting upward away from gravity and positive if the display is facing down toward gravity Note that the algorithms used by CMDeviceMotion are pretty good at separating..
http://stackoverflow.com/questions/5890499/pcm-audio-amplitude-values microphone surface to vibrate as well as in move up and down. When it moves down that might be measured or sampled a positive value. When it moves up that might be sampled as a negative value. Or it could be the opposite. When you stop talking the..
Rotating an image 90 degrees on same position when orientation changes http://stackoverflow.com/questions/6404786/rotating-an-image-90-degrees-on-same-position-when-orientation-changes which I think will rotate the btnFacebook property 90 degrees to the right correct me if I am wrong since it specifies positive radians. I can't seem to get it to work correctly though. Should'nt this rotate the button 90 degrees around its center..
How to record sound produced by mixer unit output (iOS Core Audio & Audio Graph) http://stackoverflow.com/questions/7118429/how-to-record-sound-produced-by-mixer-unit-output-ios-core-audio-audio-graph run it long enough to see what the samples look like. If the callback is receiving 16 bit audio the samples should be positive or negative integers between 32000 and 32000. If the samples alternate between a normal looking number and a much smaller..
Convert UIWebview contents to a UIImage http://stackoverflow.com/questions/858788/convert-uiwebview-contents-to-a-uiimage I haven't attempted it yet I am planning for the worst. I don't think this is premature optimization I 'm almost positive this will be an issue To get around the problem I figured I could convert the contents of the UIWebViews to UIImages and..
Get the extension of a file contained in an NSString http://stackoverflow.com/questions/9245123/get-the-extension-of-a-file-contained-in-an-nsstring the file name in a string I wrote two regex to determine what type of file I'm looking at but they never return a positive result. I haven't used regex in iOS programming before so I'm not entirely sure if I'm doing it right but I basically copied..
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