Android boot animation and android Animation

Android boot animation and android Animation

The boot animation of the Android system can be divided into three parts: kernel start, init process start, and android system service start. These three boot animations are rendered and drawn on a hardware device called the frame buffer. Http://hovertree.com/menu/android/

In the Linux kernel, each hardware device has a master device number and a slave device number, which uniquely identifies a hardware device. For frame buffer hardware devices, their master device number is defined as FB_MAJOR (29), and the slave device number is related to the registration order, and their values are equal to 0, 1, 2, and so on.

Each registered frame buffer hardware device has a corresponding Device File fb <minor> in the/dev/graphics directory. <minor> indicates a slave device number. For example, the first registered frame buffer hardware device has a corresponding Device File fb0 in the/dev/graphics directory. The user space application uses this

The device file can be used to operate the frame buffer hardware device, rendering the image to be displayed to the frame buffer hardware device.

Recommended: http://www.cnblogs.com/roucheng/p/androidservice.html