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Android中px、dp、dip和sp的区别

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px是一个物理像素pixel。px is one pixel.

sp是一个缩放无关像素。sp is scale-independent pixels.

dp或dip是一个密度无关像素。dip is Density-independent pixels

 

注意:字体使用sp,其它的都是用dp或dip。

其它的一些参考如下:

px
Pixels - corresponds to actual pixels on the screen.

in
Inches - based on the physical size of the screen.
1 Inch = 2.54 centimeters

mm
Millimeters - based on the physical size of the screen.

pt (it depends upon physical size of the screen) Points - 1/72 of an inch based on the physical size of the screen.

dp
Density-independent Pixels - an abstract unit that is based on the physical density of the screen. These units are relative to a 160 dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of dp-to-pixel will change with the screen density, but not necessarily in direct proportion. Note: The compiler accepts both "dip" and "dp", though "dp" is more consistent with "sp".

sp
Scale-independent Pixels - this is like the dp unit, but it is also scaled by the user's font size preference. It is recommend you use this unit when specifying font sizes, so they will be adjusted for both the screen density and user's preference.
最新提问 12月 29, 2014 分类:Android 小技巧 | 用户: forlong401 (7,050 分)

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