iphone-os-4.0

iPhone OS 4.0 backwards compatible with 3.1/.2

Title says it all. I'm building an iPhone application with a base SDK target of 3.1.x. I've got a friend who offered to test it on the OS 4.0 beta, but I'm wondering in advance if I should bother. Will my application run under 4.0 or is it not backwards compatible? I have to imagine it will since apps built for 2.x run on 3.x just fine A...

UIWebView iPhone OS 4.0 can't view YouTube video

Hi, I used to have a UIWebView that links to our web page. This page contains a list of YouTube videos and when each video is played when a user selects on it. This app works well in iPhone OS 3.0, but it doesn't work on iPhone OS 4.0 anymore. I tried loading my web page on iPhone Safari, it doesn't work either. I tried this URL htt...