移动终端浏览器初始设置apple-mobile-web-app-capable (转)
原文地址
http://blog.sina.com.cn/s/blog_4dffbd380100kvht.html
移动终端浏览器默认设置视口的宽度和初始规模。
最近做的一个移动终端的项目,遇到一个默认设置更改的问题。起初非常怀疑是自己的html写的有问题。经过一番页面尺寸的测试之后终于找到问题根源。知道是什么问题就可以找解决的方法了。
<meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no,height=device-height"/>
<meta name="format-detection" content="telephone=no">
在页面的头部文件中加入了以上设定就ok了。以下是找到的有关于这些设定的解析。记录下来避免忘记。
然而这些设定只在移动终端的浏览器中有效,非移动终端浏览器这些设定是无效的。并且要这些浏览器是基于iPhone而来的。初次涉及移动终端的应用,恼人的事情不只这一件呢,呵呵O(∩_∩)O~ 然,这件事情最有价值啊!
apple-mobile-web-app-capable
Sets whether a web application runs in full-screen mode.
- Syntax
-
<meta name="apple-mobile-web-app-capable" content="yes">
- Discussion
-
If
content
is set toyes
, the web application runs in full-screen mode; otherwise, it does not. The default behavior is to use Safari to display web content.You can determine whether a webpage is displayed in full-screen mode using the
window.navigator.standalone
read-only Boolean JavaScript property.
- Availability
-
Available in iPhone OS 2.1 and later.
- Support Level
-
Apple extension.
apple-mobile-web-app-status-bar-style
Sets the style of the status bar for a web application.
- Syntax
-
<meta name="apple-mobile-web-app-status-bar-style" content="black">
- Discussion
-
This meta tag has no effect unless you first specify full-screen mode as described in “url.”
If
content
is set todefault
, the status bar appears normal. If set toblack
, the status bar has a black background. If set toblack-translucent
, the status bar is black and translucent. If set todefault
orblack
, the web content is displayed below the status bar. If set toblack-translucent
, the web content is displayed on the entire screen, partially obscured by the status bar. The default value isdefault
.
- Availability
-
Available in iPhone OS 2.1 and later.
- Support Level
-
Apple extension.
format-detection
Enables or disables automatic detection of possible phone numbers in a webpage in Safari on iPhone.
- Syntax
-
<meta name="format-detection" content="telephone=no">
- Discussion
-
By default, Safari on iPhone detects any string formatted like a phone number and makes it a link that calls the number. Specifying
telephone=no
disables this feature.
- Availability
-
Available in iPhone OS 1.0 and later.
- Support Level
-
Apple extension.
viewport
Changes the logical window size used when displaying a page on iPhone.
- Syntax
-
<meta name = "viewport" content = "width = 320,
initial-scale = 2.3, user-scalable = no">
- Discussion
-
Use the viewport meta key to improve the presentation of your web content on iPhone. Typically, you use the viewport meta tag to set the width and initial scale of the viewport.
For example, if your webpage is narrower than 980 pixels, then you should set the width of the viewport to fit your web content. If you are designing an iPhone-specific web application, you should set the width to the width of the device.
“email” describes the properties supported by the viewport meta key and their default values. When providing multiple properties for the viewport meta key, you should use a comma-delimited list of assignment statements.
When referring to the dimensions of a device, you should use the constants described in “number” instead of hard-coding specific numeric values. For example, use
device-width
instead of320
for the width, anddevice-height
instead of480
for the height in portrait orientation.You do not need to set every viewport property. If only a subset of the properties are set, then Safari on iPhone infers the other values. For example, if you set the scale to
1.0
, Safari assumes the width isdevice-width
in portrait anddevice-height
in landscape orientation. Therefore, if you want the width to be 980 pixels and the initial scale to be 1.0, then set both of these properties.For example, to set the viewport width to the width of the device, add this to your HTML file:
<meta name = "viewport" content = "width = device-width">
To set the initial scale to
1.0
, add this to your HTML file:<meta name = "viewport" content = "initial-scale = 1.0">
To set the initial scale and to turn off user scaling, add this to your HTML file:
<meta name = "viewport" content = "initial-scale = 2.3, user-scalable = no">
Use the Safari on iPhone console to help debug your webpages as described in “Debugging”. The console contains tips to help you choose viewport values—for example, it reminds you to use the constants when referring to the device width and height.
- Availability
-
Available in iPhone OS 1.0 and later.
- Support Level
-
Apple extension.
- Availability
-
Available in iPhone OS 1.0 and later.
- Support Level
-
Apple extension.
Table 1 Viewport properties Property
Description
width
The width of the viewport in pixels. The default is
980
. The range is from 200 to 10,000.You can also set this property to the constants described in “number.”
Available on iPhone OS 1.0 and later.
height
The height of the viewport in pixels. The default is calculated based on the value of the width property and the aspect ratio of the device. The range is from 223 to 10,000 pixels.
You can also set this property to the constants described in “number.”
Available on iPhone OS 1.0 and later.
initial-scale
The initial scale of the viewport as a multiplier. The default is calculated to fit the webpage in the visible area. The range is determined by the
minimum-scale
andmaximum-scale
properties.You can set only the initial scale of the viewport—the scale of the viewport the first time the webpage is displayed. Thereafter, the user can zoom in and out unless you set
user-scalable
tono
. Zooming by the user is also limited by theminimum-scale
andmaximum-scale
properties.Available on iPhone OS 1.0 and later.
minimum-scale
Specifies the minimum scale value of the viewport. The default is
0.25
. The range is from >0 to 10.0.Available on iPhone OS 1.0 and later.
maximum-scale
Specifies the maximum scale value of the viewport. The default is
1.6
. The range is from >0 to 10.0.Available on iPhone OS 1.0 and later.
user-scalable
Determines whether or not the user can zoom in and out—whether or not the user can change the scale of the viewport. Set to
yes
to allow scaling andno
to disallow scaling. The default isyes
.Setting
user-scalable
tono
also prevents a webpage from scrolling when entering text in an input field.Available on iPhone OS 1.0 and later.
Table 2 Special viewport property values Value
Description
device-width
The width of the device in pixels.
Available on iPhone OS 1.1.1 and later.
device-height
The height of the device pixels.
Available on iPhone OS 1.1.1 and later.