5的CSS像素比Android设备的双边框宽度

5的CSS像素比Android设备的双边框宽度

本文介绍了与1.5的CSS像素比Android设备的双边框宽度的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

给定一个(下文源)包含与1px的边框元素,它将呈现像这在Android相比到iOS:

正如你所看到的,Android的边界没有一个统一的宽度,有时是1px的,有时是2像素宽。至于我已经能够对其进行测试,这仅出现在1.5一个CSS的像素比例(包括Android模拟器)设备,但与2的像素比例(包括iOS)。我相信这个问题是由亚像素反锯齿和/或四舍五入的问题引起的,但老实说,我不知道我怎么会去修复这一点。

 <!DOCTYPE HTML>
< HTML和GT;
< HEAD>
    <间的charset = UTF-8 />
    <标题>< /标题>
    < META NAME =视口CONTENT =WIDTH =设备宽度,初始规模= 1.0,最大规模= 1.0,用户可扩展性=无>
    <风格类型=文/ CSS>
           DIV {
                  宽度:100像素;
                  文本对齐:中心;
                  保证金左:50%;
                  边框:1px的固体品红;
          }
    < /风格>
< /头>
<身体GT;
        < D​​IV>&Foobar的LT; / DIV>
< /身体GT;
< / HTML>


解决方案

有关低DPI设备,我发现下一个解决方法:

\r
\r

.wrapper {\r
  背景色:红色;\r
  填充:1px的;\r
  显示:inline-block的;\r
}\r
.inner_text {\r
  填充:5像素;\r
  背景色:#FFF;\r
  显示:inline-block的;\r
}

\r

< D​​IV CLASS =包装>\r
  <跨度类=inner_text>显示低DPI设备及LT完美的一个规模边界; / SPAN>\r
< / DIV>

\r

\r
\r

整整低DPI设备应使用媒体查询例外。
例如@media(最大分辨率:190dpi)或其他条件

看起来从边境1px的稍有不同,但如此接近,而不是随机宽度窃听

Given a simple page (source below) that contains an element with a 1px border, it will render like this on Android compared to iOS:

As you can see, the Android border does not have a uniform width, sometimes being 1px and sometimes being 2px wide. As far as I've been able to test it, this only occurs on devices with a CSS pixel ratio of 1.5 (including the Android emulator), but not with a pixel ratio of 2 (including iOS). I believe that this problem is caused by subpixel-antialias and/or rounding issues, but I honestly have no idea how I'd go about fixing this.

<!DOCTYPE html>
<html>
<head>
    <meta charset=utf-8 />
    <title></title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <style type="text/css">
           div {
                  width: 100px;
                  text-align: center;
                  margin-left: 50%;
                  border: 1px solid magenta;
          }
    </style>
</head>
<body>
        <div>Foobar</div>
</body>
</html>
解决方案

For low DPI devices I found next workaround:

.wrapper {
  background-color: red;
  padding: 1px;
  display: inline-block;
}
.inner_text {
  padding: 5px;
  background-color: #fff;
  display: inline-block;
}
<div class="wrapper">
  <span class="inner_text">Showing perfect one-sized border on low DPI devices</span>
</div>

for exactly low dpi devices should use media query for exceptions.For example @media (max-resolution: 190dpi) or another condition

It looks little different from border 1px but so close and not bugged with random width

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09-02 21:52