'Go to Line' Command
Since Storyboard Designer is Eclipse-based, the same Eclipse commands you may already know can also be used with Designer.
For example, if you wish to navigate to a specific line number in your code, you can use the Ctrl + L (⌘ + L for Mac) command.
Doing so will open the “Go to Line” dialog:
Here, simply enter the desired line number you wish to navigate to and click Go to Line, or press Enter.
Note: You don’t need line numbers enabled in order to use this command, as line numbers are always tracked, it is the displaying of them that is toggle-able.
If you don’t already have line numbers enabled, you can use the Ctrl + F10 shortcut to open this dialog to enable them: