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2014/10/15 ¤U¤È 10:09:08
iphone Programming Glossary: flipiOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior well... When I take the photo the imageOrientation is set to 3. My workaround code is smart enough to realize this and flip it so the user never notices. Additionally my code to save the image to the library realizes this flips it then saves it.. this and flip it so the user never notices. Additionally my code to save the image to the library realizes this flips it then saves it so it appears in the camera roll properly. That code looks like so NSData pngdata UIImagePNGRepresentation..
How can I change the saturation of an UIImage? http://stackoverflow.com/questions/1144768/how-can-i-change-the-saturation-of-an-uiimage UIGraphicsGetCurrentContext CGContextSaveGState context CGContextTranslateCTM context 0.0 self.bounds.size.height flip image right side up CGContextScaleCTM context 1.0 1.0 CGContextDrawImage context rect self.image.CGImage CGContextSetBlendMode..
Transition an existing paid for app to free version with In App Purchase http://stackoverflow.com/questions/1575965/transition-an-existing-paid-for-app-to-free-version-with-in-app-purchase this question One possible solution might be to place code in a new update of your paid application that would flip whatever switch you'd use to identify paid customers be it in a property list or other form . If you give your existing..
Annotate PDF within iPhone SDK http://stackoverflow.com/questions/2313008/annotate-pdf-within-iphone-sdk paperSize nil UIGraphicsBeginPDFPageWithInfo paperSize nil CGContextRef currentContext UIGraphicsGetCurrentContext flip context so page is right way up CGContextTranslateCTM currentContext 0 paperSize.size.height CGContextScaleCTM currentContext.. document 1 grab page 1 of the PDF CGContextDrawPDFPage currentContext page draw page 1 into graphics context flip context so annotations are right way up CGContextScaleCTM currentContext 1.0 1.0 CGContextTranslateCTM currentContext 0..
http://stackoverflow.com/questions/2337408/addsubview-animation it. This works for most properties of UIViews alpha scale bounds frames etc. There are also build in animations as flip and curl UIView beginAnimations nil context nil UIView setAnimationDuration 1.0 UIView setAnimationTransition UIViewAnimationTransitionFlipFromRight..
CGContextDrawPDFPage taking up large amounts of memory http://stackoverflow.com/questions/2975240/cgcontextdrawpdfpage-taking-up-large-amounts-of-memory box Start the drawing CGContextSaveGState g Clip to our bounding box CGContextClipToRect g pageRect Now we have to flip the origin to top left instead of bottom left First flip y axix CGContextScaleCTM g 1 1 Second move origin CGContextTranslateCTM.. bounding box CGContextClipToRect g pageRect Now we have to flip the origin to top left instead of bottom left First flip y axix CGContextScaleCTM g 1 1 Second move origin CGContextTranslateCTM g 0 rect.size.height Now apply the transform to..
How to get audio volume level, and volume changed notifications on iOS 4? http://stackoverflow.com/questions/3651252/how-to-get-audio-volume-level-and-volume-changed-notifications-on-ios-4 to my function audioVolumeChangeListenerCallback when I press the volume buttons on my device the headset clicker or flip the ringer silent switch. When using the exact same code for registering for kAudioSessionProperty_AudioRouteChange which..
How to display an image on a MKOverlayView? http://stackoverflow.com/questions/3891850/how-to-display-an-image-on-a-mkoverlayview CGContextClip context CGContextDrawImage context theRect imageReference image release When I download the image I flip the image so it can be easily drawn in the MKOverlayView size_t width CGImageGetWidth imageReference self.scaleFactor size_t.. in the context CGContextDrawImage imageContext imageRect imageReference CGContextRestoreGState imageContext After I flipped the image I manipulate it and then store it in memory as a NSData object. It looks like the image got stretched but it..
UIView vertical flip animation http://stackoverflow.com/questions/5392629/uiview-vertical-flip-animation vertical flip animation I have an iOS UIView with UIViewAnimationTransitionFlipFromRight . I need it to flip vertically though. The page.. vertical flip animation I have an iOS UIView with UIViewAnimationTransitionFlipFromRight . I need it to flip vertically though. The page curl transition won't cut it. I assume this will require something custom. Any ideas iphone.. improve this question As of iOS 5.0 there's no need to write your own Core Animation transformation to do vertical flips. Just use UIKit's UIViewAnimationOptionTransitionFlipFromTop and UIViewAnimationOptionTransitionFlipFromBottom transitions..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform transform CGAffineTransformIdentity switch self.imageOrientation case UIImageOrientationDown..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload Then when I go back to Landscape the frame is now this 3. view frame 0 0 1024 655 And further autorotation events will flip flop between frame values #2 #3. To get around the weirdness of #1 I'm currently doing this in viewDidLoad if UIInterfaceOrientationIsPortrait..
http://stackoverflow.com/questions/843534/flip-view-iphone View Iphone Dear All please consider the code below and tell me what I'm doing wrong. I want to flip between two UIViews. Somehow when I flip away from the initial view I just get the flipped view without animation. When.. please consider the code below and tell me what I'm doing wrong. I want to flip between two UIViews. Somehow when I flip away from the initial view I just get the flipped view without animation. When I flip back the animation shows just fine... I'm doing wrong. I want to flip between two UIViews. Somehow when I flip away from the initial view I just get the flipped view without animation. When I flip back the animation shows just fine. The flips are triggered from buttons on the views..
How can I add CGPoint objects to an NSArray the easy way? http://stackoverflow.com/questions/899600/how-can-i-add-cgpoint-objects-to-an-nsarray-the-easy-way NSValue instances as you have CGPoint and end the list in nil. All objects in this structure are auto released. On the flip side when you're pulling the values out of the array NSValue val points objectAtIndex 0 CGPoint p val CGPointValue share..
iOS6: supportedInterfaceOrientations not working (is invoked but the interface still rotates) http://stackoverflow.com/questions/12447552/ios6-supportedinterfaceorientations-not-working-is-invoked-but-the-interface-s
Hitting buttons while UIView is in transition, flipping in or out http://stackoverflow.com/questions/1370953/hitting-buttons-while-uiview-is-in-transition-flipping-in-or-out setUserInteractionEnabled NO if view1.view.superview nil coming view1 going view2 transition UIViewAnimationTransitionFlipFromLeft else coming view2 going view1 transition UIViewAnimationTransitionFlipFromRight coming.view.frame UIScreen mainScreen.. transition UIViewAnimationTransitionFlipFromLeft else coming view2 going view1 transition UIViewAnimationTransitionFlipFromRight coming.view.frame UIScreen mainScreen .applicationFrame going.view.alpha 1.0 uncomment these lines if we want.. initWithObjects coming going nil coming viewWillAppear YES going viewWillDisappear YES UIView beginAnimations @ View Flip context viewArray UIView setAnimationDuration 1.0 UIView setAnimationDelegate self UIView setAnimationDidStopSelector @selector..
Flip animation when controller pushed on iPhone http://stackoverflow.com/questions/2506647/flip-animation-when-controller-pushed-on-iphone animation when controller pushed on iPhone I had a look around and didn't find what I was exactly looking for. Is there..
add button to navigationbar programatically http://stackoverflow.com/questions/2848055/add-button-to-navigationbar-programatically class I am using the following inside viewDidLoad UIBarButtonItem flipButton UIBarButtonItem alloc initWithTitle @ Flip style UIBarButtonItemStyleBordered target self action @selector flipView self.navigationItem.rightBarButtonItem.. flipButton flipButton release This adds a button to the right hand side with the title Flip which calls the method IBAction flipView This looks very much like you #3 but it is working within my code. share improve..
UIModalTransitionStyle horizontal movement http://stackoverflow.com/questions/3509869/uimodaltransitionstyle-horizontal-movement horizontal movement The UIModalTransitionStyle is either Vertical Flip or Dissolve. I would like it to be right to left or left to right like if you click on a disclosure button on a MapKit callout..
Core Text: Render to an Odd Shape http://stackoverflow.com/questions/3813318/core-text-render-to-an-odd-shape and draw it into the graphics context CTFrameRef frame CTFramesetterCreateFrame framesetter CFRangeMake 0 0 path NULL Flip the text CGAffineTransform flip CGAffineTransformMake 1.0 0.0 0.0 1.0 0 self.frame.size.height CGContextConcatCTM context..
ASSETWriterInput for making Video from UIImages on Iphone Issues http://stackoverflow.com/questions/3983882/assetwriterinput-for-making-video-from-uiimages-on-iphone-issues NSParameterAssert context CGContextTranslateCTM context 0 CGImageGetHeight image CGContextScaleCTM context 1.0 1.0 Flip vertically to account for different origin CGContextDrawImage context CGRectMake 0 0 CGImageGetWidth image CGImageGetHeight..
UIVIew Flip Vertical Animation http://stackoverflow.com/questions/5144446/uiview-flip-vertical-animation Flip Vertical Animation Given UIView beginAnimations nil context nil UIView setAnimationCurve UIViewAnimationCurveEaseOut UIView.. UIViewAnimationCurveEaseOut UIView setAnimationDuration .5 UIView setAnimationTransition UIViewAnimationTransitionFlipFromRight forView card cache NO myPic UIImage UIImagenamed @ mySecondImage.png UIView commitAnimations CODE Which animates.. CODE Which animates 'myPic' right to left with a flip. I need to get the same animation but vertically. Flip from Top or Flip from Bottom. I looked around no one really had a working model suggested. I tried this yet no luck float..
http://stackoverflow.com/questions/843534/flip-view-iphone View Iphone Dear All please consider the code below and tell me what I'm doing wrong. I want to flip between two UIViews... 2.0 UIView setAnimationBeginsFromCurrentState NO UIView setAnimationTransition UIViewAnimationTransitionFlipFromRight forView self.view cache YES UIView parent self.view.superview self.view removeFromSuperview parent addSubview moreInfo.. 2.0 UIView setAnimationBeginsFromCurrentState NO UIView setAnimationTransition UIViewAnimationTransitionFlipFromLeft forView self.flipView cache YES UIView parent self.flipView.superview self.flipView removeFromSuperview parent addSubview..
iPhone take augmented reality screenshot with AVCaptureVideoPreviewLayer http://stackoverflow.com/questions/8980847/iphone-take-augmented-reality-screenshot-with-avcapturevideopreviewlayer cgcontext UIGraphicsGetCurrentContext UIKit coordinate system is upside down to GL Quartz coordinate system Flip the CGImage by rendering it to the flipped bitmap context The size of the destination area is measured in POINTS CGContextSetBlendMode..
View Controllers: How to switch between views programmatically? http://stackoverflow.com/questions/910994/view-controllers-how-to-switch-between-views-programmatically viewDidDisappear YES blueViewController viewDidAppear YES 3. now add animation UIView beginAnimations @ View Flip context nil UIView setAnimationDuration 1.25 UIView setAnimationCurve UIViewAnimationCurveEaseInOut blue view will appear.. by flipping from right if blueViewController.view.superview nil UIView setAnimationTransition UIViewAnimationTransitionFlipFromRight forView self.view cache YES blueViewController viewWillAppear YES yellowViewController viewWillDisappear YES yellowViewController.view..
Is it possible to combine multiple pdf files into a single pdf file programmatically in iphone? http://stackoverflow.com/questions/9646203/is-it-possible-to-combine-multiple-pdf-files-into-a-single-pdf-file-programmatic paperSize nil Get graphics context to draw the page CGContextRef currentContext UIGraphicsGetCurrentContext Flip and scale context to draw the pdf correctly CGContextTranslateCTM currentContext 0 paperSize.size.height CGContextScaleCTM..
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