"Pro Android Graphics" Third section of reading notes

Android Frame Animation:xml, Concepts and optimizationFrame Animation Concepts:cels, framerate, and ResolutionThe development of animationCel-base AnimationRaster animationBitmap

Commonly called bitmap animation

Not currently support animated GIFoptimizing frame animation:color Depth and Frame ratethree primary WA Ys to optimize

Reduce the resolution

Reduce the color depth

and reduce the framerate

Format: Png32,png8If you don ' t need to composite your animation over other graphics, you can also consider using the lossy JPEG format t O get a far smaller per-frame data foot print by throwing away some of the image data and resulting quality.

Hardware conditions, processor and memory should be considered

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 <animation-list> tag:the Parent Frame Containerandroid ' s <item> tag:specifying Your Animat Ion FramesCreating A frame Animation for our graphicsdesign Appinstantiating the frame Animation definit Ion Using Java

Animationdrawable drawable = (animationdrawable) imageview.getdrawable ();

Drawable.start ();