I am trying to implement alternate layouts for both the iPad/iPhone and older iPhones as well.
I have established that the best method is to use @media queries from the CSS3 spec,
As such these are my media queries at the minute:
@media screen and (max-width: 1000px) { ... }
Above is for small desktop and laptop screens.
@media screen and (max-width: 700px) { ... }
Above is for the iPad and VERY small desktop/laptop screens.
@media screen and (max-device-width: 480px) { ... }
Above is for iPhone 3GS- and mobile devices in general.
However, the new iPhone 4 with Steve Jobs's all-singing all-dancing "retina" display means that it has a pixel ratio of 2-1 meaning 1 pixel actually appears to the browser as 2x2 pixels making its resolution (960x640 - meaning it will trigger the iPad layout rather than the mobile device layout) so this requires ANOTHER media query (only so far supported by webkit):
@media screen and (-webkit-min-device-pixel-ratio: 2) { ... }
Now, the thing is... I want my nice shiny new iPhone 4 layout amalgamated with the iPhone 3GS and mobile device layout as they will both have exactly the same inner CSS code,
Therefore making my question;
How do I create an @media query that points both the iPhone 4, 3GS and other mobiles to the same styles?
I'm not sure if there's a single catch-all media query for all iPhones and iPod touches. In the meantime, you can use a comma to group both media queries for standard and Retina displays to a single rule, just like you use it to group selectors:
ReplyDelete@media only screen and (max-device-width: 480px),
only screen and (-webkit-min-device-pixel-ratio: 2) {
/* iPhone CSS rules here */
}
BoltClock's answer seems pretty good to me at the moment.
ReplyDeleteHowever, thinking in to the future, if Apple (or another manufacturer) releases another device with a device pixel ratio of 2, this media query would be used for this device too.
I don't think it's out of the question to assume that this will happen, and that the new device could have a much larger screen, such as an iPad with a retina display.
To make this query only applicable to the iPhone 4 and previous iPhones (and any other device of a similar size)
@media screen and (max-device-width: 480px), screen and (max-device-width: [[IPHONE_4_WIDTH]]px) and (-webkit-min-device-pixel-ratio: 2) {
/* iPhone CSS rules here */
}
Unsure of [[IPHONE_4_WIDTH]] right now - don't have one on me, and some sites say 480, some say 960. Try replacing with both. (And let me know what you find :) )
I'm not sure I follow your question. Did you try your queries on the iPhone 4? device-width is measured in logical pixels, not physical ones, so the iPhone 4 still fits the max-device-width: 480px criteria.
ReplyDeleteSame goes for high-end Android smartphones, which have a pixel ratio of 1.5: the Nexus One has a physical screen of 480x800, logical screen of 320x533.
I have been hunting for a way to specifically target the iPhone 3 / 3GS per the second part of the request. The most acceptable solution I've found is to tailor the media queries to the fixed parameters of an iPhone 3.
ReplyDelete@media only screen
and (device-width:320px)
and (device-height:480px)
and (-webkit-device-pixel-ratio: 1) { ... }
In order to work this query requires that you use Safari's viewport meta tag to fix the browser to 100% with the following:
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
There are a small number of Android phones that will also get picked up on that query. With the Android Market showing 18.4% of active phones in the potential screen size range of 320x480, only a subset of that will match the device-pixel-ratio on the stock webkit browser. Not perfect, but better than nothing at all.
Lists of phone resolutions
Slightly outdated but thorough: http://cartoonized.net/cellphone-screen-resolution-by-size.php
Only 3 listed as a potential match here: http://en.wikipedia.org/wiki/Comparison_of_Android_devices
Android Market weekly snapshot: http://developer.android.com/resources/dashboard/screens.html
All information was considered as of post date.
Also per mernen's comment #2 to his post here are the docs to target Android devices by pixel density: http://developer.android.com/guide/webapps/targeting.html#DensityCSS