2014/10/15 下午 10:10:59

iphone Programming Glossary: layers

iPhone board game: OpenGL ES or CoreGraphics? [closed]

http://stackoverflow.com/questions/1082511/iphone-board-game-opengl-es-or-coregraphics

elements of the game board pieces counters board squares etc. as individual UIViews or CALayers then animating those layers or views around. UIViews aren't too much heavier than CALayers and they use Core Animation behind the scenes to do simple..

Monotouch or Titanium for rapid application development on IPhone?

http://stackoverflow.com/questions/1488402/monotouch-or-titanium-for-rapid-application-development-on-iphone

serious about this and I think they're magic. They're the Keebler Elves of the dev world. They sit in their secret layers and crank out stuff everybody ok not everybody likes but that nobody else would even attempt to do. Titanium is either going..

composite colors: CALayer and blend mode on iPhone

http://stackoverflow.com/questions/1658751/composite-colors-calayer-and-blend-mode-on-iphone

a white mask I want to use to filter a background bitmap and I want to try different blending mode. Unfortunately the layers are only adding their colors. Here is my code @implementation WhiteLayerHelper void drawLayer CALayer theLayer inContext..

Z-ordering of MKAnnotationViews

http://stackoverflow.com/questions/1681565/z-ordering-of-mkannotationviews

the callout views are no longer always on top to the annotation views. The MapKit seems to get very confused about the layers callouts should be drawn in a layer above all annotation views . I can even figure out how it is getting confused since..

Using CALayer Delegate

http://stackoverflow.com/questions/2015353/using-calayer-delegate

CALayer Delegate I have a UIView whose layers will have sublayers. I'd like to assign delegates for each of those sublayers so the delegate method can tell the layer.. CALayer Delegate I have a UIView whose layers will have sublayers. I'd like to assign delegates for each of those sublayers so the delegate method can tell the layer what to draw. My question.. CALayer Delegate I have a UIView whose layers will have sublayers. I'd like to assign delegates for each of those sublayers so the delegate method can tell the layer what to draw. My question is What should I provide as CALayer's delegate The documentation..

UISearchBar clear background color or set background image [iphone sdk]

http://stackoverflow.com/questions/2139115/uisearchbar-clear-background-color-or-set-background-image-iphone-sdk

that works really well. You have to override the UISearchBar and then hide both the Background and Segment Control layers. Then Draw the background. @ .m #import UISearchBar.h #import QuartzCore QuartzCore.h @implementation UISearchBar CustomBackground..

Disabling implicit animations in -[CALayer setNeedsDisplayInRect:]

http://stackoverflow.com/questions/2244147/disabling-implicit-animations-in-calayer-setneedsdisplayinrect

NSMutableDictionary alloc initWithObjectsAndKeys NSNull null @ onOrderIn NSNull null @ onOrderOut NSNull null @ sublayers NSNull null @ contents NSNull null @ bounds nil layer.actions newActions newActions release to disable fade in out.. nil layer.actions newActions newActions release to disable fade in out animations on insertion or change of sublayers within one of my layers as well as changes in the size and contents of the layer. I believe the contents key is the one.. newActions newActions release to disable fade in out animations on insertion or change of sublayers within one of my layers as well as changes in the size and contents of the layer. I believe the contents key is the one you're looking for in order..

fastest way to draw a screen buffer on the iphone

http://stackoverflow.com/questions/2395650/fastest-way-to-draw-a-screen-buffer-on-the-iphone

I have found is SetDIBitsToDevice. I don't know much about the iphone or the libraries and there seem to be so many layers and different types of UI elements so I might need a lot of explanation... for now I'm just going to constantly update a..

Drawing formulas with Quartz 2d

http://stackoverflow.com/questions/2907045/drawing-formulas-with-quartz-2d

just that trust me when I say typesetting equations is not a trivial undertaking. In my case I used Core Animation layers to construct the sub elements of a parsed equation. The equations are constructed hierarchically and the operations that..

How do I reset after a UIScrollView zoom?

http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom

New findings The error seems to be CALayer retainCount message sent to deallocated instance I'm never deallocating any layers myself. Before I wasn't even deleting any views or anything. This error was being thrown on zoom and also on rotate. If..

port an iOS (iPhone) app to mac?

http://stackoverflow.com/questions/4579849/port-an-ios-iphone-app-to-mac

don't work on OSX problem if you stack up a lot of views in your iOS app. Essentially you will have to change to using layers instead of simply views on the Mac if you rely on nested hierarchies of views here and there on the fone Click this link..

layer.renderInContext doesn't take layer.mask into account?

http://stackoverflow.com/questions/4896296/layer-renderincontext-doesnt-take-layer-mask-into-account

How do you explicitly animate a CALayer's backgroundColor?

http://stackoverflow.com/questions/518192/how-do-you-explicitly-animate-a-calayers-backgroundcolor

is running. After the animation finishes the value set in the model layer returns. So you are going to have to set the layers backgroundColor property to red as well. Perhaps turn off the implicit animations using a CATransaction. You could save..

Implement custom animation to present modal view from specified view on iPad

http://stackoverflow.com/questions/6605959/implement-custom-animation-to-present-modal-view-from-specified-view-on-ipad

documentation I would greatly appreciate it Update After some investigation I have found that this can be done using layers and Core Animation for the first part and then animate it a formSheet modal view but I still dont quite understand how to..

Create a UIImage from two other UIImages on the iPhone

http://stackoverflow.com/questions/679245/create-a-uiimage-from-two-other-uiimages-on-the-iphone

do appears simple create a UIImage and draw part of another UIImage into it I got a bit confused with the context and layers and stuff. Could someone please explain how to write something like that efficiently with example code iphone uiimage ..

Most efficient way to draw part of an image in iOS

http://stackoverflow.com/questions/8035673/most-efficient-way-to-draw-part-of-an-image-in-ios

CPU. Graphics operations done in CPU are a lot slower than in GPU. Simply clipping an image and compositing the image layers are very simple and cheap operations for GPU compared to CPU soo you can expect the UIKit library will utilize this because..

UIButton can't be touched while animated with UIView animateWithDuration

http://stackoverflow.com/questions/8346100/uibutton-cant-be-touched-while-animated-with-uiview-animatewithduration

to expand on this answer if you need more. Here is how you would respond to a touch event by hit testing presentation layers. This code is in the view controller subclass that is managing your buttons. When I did this I was interested in the initial..