android

一些术语

IME —-Input Method Editor 也就是常说的“输入法”

Screen size —-Actual physical size, measured as the screen’s diagonal

Resolution —-The total number of physical pixels on a screen. Note that, although resolution is often expressed as width x height , resolution does not imply a specific aspect ratio.

Density —-Based on the screen resolution, the spread of pixels across the physical width and height of the screen. A screen with lower density has fewer available pixels spread across the screen width and height, where a screen with higher density has more — sometimes significantly more — pixels spread across the same area. The density of a screen is important because, other things being equal, a UI element (such as a button) whose height and width are defined in terms of screen pixels will appear larger on the lower density screen and smaller on the higher density screen. 像素密度=像素总数/屏幕面积

Density independent pixel (dip) —-

A virtual pixel unit that applications can use in defining their UI, to express layout dimensions or position in a density-independent way.

The density-independent pixel is equivalent to one physical pixel on a 160 dpi screen, the baseline density assumed by the platform. At run time, the platform transparently handles any scaling of the dip units needed, based on the actual density of the screen in use. The conversion of dip units to screen pixels is simple: pixels = dips * (density / 160) . For example, on 240 dpi screen, 1 dip would equal 1.5 physical pixels. Using dip units to define your application’s UI is highly recommended, as a way of ensuring proper display of your UI on different screens. 

 

VGA(Video Graphics Array) —-是IBM在1987年随PS／2机一起推出的一种视频传输标准。在手机屏幕中意思只表示指手机的分辨率，与手机液晶屏幕的TFT材质和手机屏幕大小尺寸都没有 关系。

VGA是640*480像素

QQVGA(Quarter Quarter VGA)—-160*120像素

QVGA(Quarter VGA)—-VGA的四分之一尺寸 320*240像素

WQVGA(Wide Quarter VGA)—-400*240像素

HVGA(Half-size VGA)—-VGA的一半 320*480像素

WVGA(Wide VGA)—-800*480像素

SVGA(Super VGA)—-800*600像素

XGA(Extended Graphics Array)—-1024*768像素

WXGA(Wide eXtended Graphics Array)—-1280*768像素

Quad-VGA—-1280*960像素

WXGA+(Wide XGA+)—-1440*900像素

SXGA(Super XGA)—-1280*1024像素

WXGA++(Wide XGA++)—-1600*900像素

SXGA+(Super XGA+)—-1400*1050像素—-我的本本就是这个像素！

UXGA(Ultra XGA)—-1600*1200像素

WUXGA(Wide Ultra XGA)—-1920*1200像素

QXGA(Quad XGA)—-2048*1536像素

QSXGA(Quad Super XGA)—-2560*2048像素

同样的分辨率，屏幕越小，显示越细腻。