Is there a way to have iPhone SDK 3 and 4b at the same time?

Is there a way to have 开发者_JS百科iPhone SDK 3 and 4b at the same time?

Definitely possible. You can install XCode (and the associated iPhone SDKs) to a folder other than 'Developer', leaving your current iPhone SDK installation intact. You can use 'DeveloperBeta' for example. During the installation, right after choosing which Volume to install to, click on the 'Developer' folder entry and select 'Other' to choose a different folder.

Afterward, make sure you open your desired XCode version and open your .xcodeproj files from there, because double-clicking on .xcodeproj (or other iPhone source files) will probably open the beta XCode version by default.

Yes, just install into a different location during install. Some common parts will get updated but his hasn't been a problem so far as I know.