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《Pro Android Graphics》读书笔记之第三节

发布人:AG集&# 发布时间:2019-01-26

Android 亚美娱乐Frame Animation: XML, Concepts and Optimization Frame Animation Concepts: Cels, Framerate, and Resolution 动画的发展 cel-base animation raster animation bitmap

commonly called bitmap animation

not currently support Animated GIF Optimizing Frame Animation: Color Depth and Frame Rate three primary ways to optimize

reduce the resolution

reduce the color depth

and reduce the framerate

格式:PNG32,Png8 If you don’t need to composite your animation over other graphics, you can also consider using the lossy JPEG format to get a far smaller per-frame data foot print by throwing away some of the image data and resulting quality.

应该考虑硬件条件, 处理器及内存


Creating Frame Animation in Android Using XML Markup

Frame animation uses the drawable resource folder

animation (covered in Chapter 4) uses the /res/anim folder

AnimationDrawable

Android Tag: The Parent Frame Container Android's Tag: Specifying Your Animation Frames Creating a Frame Animation for our GraphicsDesign App Instantiating the Frame Animation Definition Using Java

AnimationDrawable drawable = (AnimationDrawable) imageView.getDrawable();

drawable.start();


















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