Android可以使用的度量单位

本文介绍了Android中用于解决不同屏幕密度下显示问题的各种单位,包括像素(px)、英寸(in)、毫米(mm)、点(pt)、密度独立像素(dp/dip)及可缩放像素(sp)。推荐使用sp作为文本大小单位,dp用于其他元素,以确保应用界面能在各种屏幕尺寸和密度下保持一致。同时建议使用矢量图形替代位图以增强应用的可伸缩性。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

Resolution-independentmeasurements help solve this problem.


Android supports all the following units:


• px (pixels): Dots on the screen.


• in (inches): Size as measured by a ruler.


• mm (millimeters): Size as measured by a ruler.


• pt (points): 1/72 of an inch.


• dp (density-independent pixels): An abstract unit based on the density of the screen. On a display with 160 dots


   per inch, 1dp = 1px.


• dip: Synonymfor dp, usedmore often in Google examples.


• sp (scale-independent pixels): Similar to dp but also scaled by the user’s font size preference.

 

To make your interface scalable to any current and future type of display, I recommend you always use the sp unit

 

for text sizes and the dip unit for everything else. You should also consider using vector graphics instead of bitmaps

 

(see Chapter 4, Exploring2D Graphics, on page 70).

 

 

From Hello-Android  Page 52

评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值