什么是编辑文本中的 android:ems 属性？
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What is android:ems attribute in Edit Text?
提问by Chirag
Possible Duplicate:
What means Ems? (Android TextView)
In EditTextthere is an attribute named android:ems. The description
is "Makes the EditTextbe exactly this many ems wide"
其中EditText有一个名为android:ems. 描述是“使EditText宽度正好有这么多 em”
What does ems mean?
ems是什么意思？
采纳答案by Boris Strandjev
Taken from: http://www.w3.org/Style/Examples/007/units:
取自：http: //www.w3.org/Style/Examples/007/units：
The em is simply the font size. In an element with a 2in font, 1em thus means 2in. Expressing sizes, such as margins and paddings, in em means they are related to the font size, and if the user has a big font (e.g., on a big screen) or a small font (e.g., on a handheld device), the sizes will be in proportion. Declarations such as 'text-indent: 1.5em' and 'margin: 1em' are extremely common in CSS.
em 只是字体大小。在具有 2in 字体的元素中，1em 因此意味着 2in。em 中表示边距和内边距等大小，表示它们与字体大小有关，如果用户有大字体（例如，在大屏幕上）或小字体（例如，在手持设备上），大小将成比例。诸如 'text-indent: 1.5em' 和 'margin: 1em' 之类的声明在 CSS 中极为常见。
emis basically CSS property for font sizes.
em基本上是字体大小的 CSS 属性。
