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2014/10/15 ¤U¤È 10:05:23
iphone Programming Glossary: compositedhttp://stackoverflow.com/questions/14659563/to-drawrect-or-not-to-drawrect-when-should-one-use-drawrect-core-graphics-vs-su it seems that using lots of subviews slows rendering down because they have lots of overhead and are constantly re composited over their parent views. To be fair this was written when the 3GS was pretty brand spankin new and iDevices have gotten..
Subview appears underneath superviews layer.border? http://stackoverflow.com/questions/15490720/subview-appears-underneath-superviews-layer-border top of it iphone ios cocoa touch uiview calayer share improve this question The apple doc said borderWidth It is composited above the receiver ™s contents and sublayers so I think the border is will above all your subviews although you bring your..
Changing the text on a UISwitch http://stackoverflow.com/questions/2711180/changing-the-text-on-a-uiswitch retain UIImage onImage Docs say This image represents the interior contents of the switch. The image you specify is composited with the switch ™s rounded bezel and thumb to create the final appearance. The size of this image must be less than or equal..
what is the difference between UIImageView and drawInRect? http://stackoverflow.com/questions/3838725/what-is-the-difference-between-uiimageview-and-drawinrect
When to use PNG or JPG in iPhone development? http://stackoverflow.com/questions/3929281/when-to-use-png-or-jpg-in-iphone-development
http://stackoverflow.com/questions/4473894/alternatives-to-creating-an-opengl-texture-from-a-captured-video-frame-to-overla opaque property to YES and ensure that no other Core Animation layers or views are visible. If your OpenGL ES layer is composited on top of other layers making your CAEAGLLayer object opaque reduces but doesn ™t eliminate the performance cost. If your.. underneath it in the layer hierarchy the renderbuffer ™s color data must be in a premultiplied alpha format to be composited correctly by Core Animation. Blending OpenGL ES content on top of other content has a severe performance penalty. Honestly..
Draw another image on a UIImage http://stackoverflow.com/questions/6656745/draw-another-image-on-a-uiimage filled triangle. Or you could draw inside of the first image CGFloat width height UIImage inputImage input image to be composited over new image as example create a new bitmap image context at the device resolution retina non retina UIGraphicsBeginImageContextWithOptions..
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