I have written a small web app to collect some data and store it in a central database. I’m walking around, reading values and typing them into a web site on my Android smartphone. It’s just for me, so no public usability concerns apply this time.
Now I want to add a button to increment a reading by one, and I need to be able to push that button several times. But if I do it too fast, the browser recognises a double-tab and scales/zooms into the page.
I have added a viewport header already and played with every value combination I could find on the web. But the page remains scalable. How can I stop that?
Here’s a minimal test page that fails for me:
<!doctype html>
<html>
<head>
<title>Test page</title>
<meta name="viewport" content="width=device-width, user-scalable=no" />
<style type="text/css">
body
{
font: 16pt sans-serif;
}
</style>
</head>
<body>
This is a test page. It should not be scalable by the user at all. Not with the two-pinger pinch gesture and even less with a double-tap on the text.
</body>
</html>
Adding initial-scale=1, maximum-scale=1 and all sorts of target-whateveritwas-dpi doesn’t change a thing. I have restarted the browser (Dolphin HD and the stock browser) and cleared the cache already. I’m on Android 2.2, the phone is an HTC Desire.
It’s a known bug in Android browsers : http://code.google.com/p/android/issues/detail?id=11912