Phonegap - Reliable Page Width Detection?

Can anybody recommend a good way to detect screen width on a HTML5 Android App built in Phonegap? Our page is reasonably fluid - but I need to switch logo's/footer graphics for sma

Solution 1:

You don't need JavaScript to add additional rules based on your screen dimensions, you can use CSS3 Media Queries instead like:

.smallScreenContent{
display: none;
}
@media (max-width:400px){ //the following rules will only be used for screens up to 400px width.smallScreenContent{
display: block;
}
}​

See this link for specifications and this fiddle (resize the result) for a working demo.

Solution 2:

The only way I found to correctly detect the window size is to put a timeout of a couple of seconds before to let the canvas fit the screen. At launch it shows up on the top left corner and only spreads to fit the screen after a short while.

Solution 3:

Use

$(window).width() // For width 
$(window).height() // For Height

Alternatively you could check the width of a data-role="page" element to find the device-width (since it's set to 100% of the device-width):

var deviceWidth = 0;
$(window).bind('resize', function () {
    deviceWidth = $('[data-role="page"]').first().width());
}).trigger('resize');​​​