If you ever wonder why your GWT app doesn't start on a blackberry OS7, you might be experiencing the same problem I had a week ago. I spend a couple of hours investigating and basically, if you try to perform a Integer.parseInt, it fails miserably. Nothing in the logs, nothing in the console, etc. Debugging the JS gwt code I found that it's checking on the min/max value of an int. And guess what? OS7 browser doesn't support them. That looks like a dodgy bit overflow problem... I put a little test case together on StackOverflow for you to understand the problem. Here's a copy of it:
<html>
<body>
test page
<script>
i = 0;
if(i < -2147483647) {
alert("very low")
}
if(i < -2147483648) {
alert("very very low")
}
if(i < -2147483649) {
alert("very very very low")
}
</script>
</body>
</html>
Surprisingly, the phone comes up with the message "very very low".
So, solutions I'm considering are:
- Don't use Integer.parseInt - use Long.parseLong instead or something like that - well... that might be acceptable for some people...
- Override the Integer class and change the parseInt method to check the value on a bit less than -2147483648 - or enforce the use of a long.
- Hope and pray that RIM will fix it asap... and that everybody updates... ?
Are you guys experiencing the same problem? Any other idea how to fix it?
button below the post(s)
