Great Xcode tutorials

Here's a running list of tutorials;

Passing Data Between Views - http://www.geekylemon.com/WEBPROTECT-xcodepassingdataviews.htm

Apple Mach-O Linker Error - ARRGH!

This famously difficult to figure out compile error;

Apple Mach-O Linker Error Undefined symbols for architecture armv7: "_OBJC_CLASS_$_CPLTableViewController", referenced from: objc-class-ref in CPLCompanyViewController.o ld: symbol(s) not found for architecture armv7 collect2: ld returned 1 exit status

comes up at unexpected times and is always difficult to fix, therefore I'm gonna dedicate some time to figuring out the details and publishing a post about it.

Fix #1 Close the project, Xcode, turn off your Mac & wait a few days.  After fiddling around with deleting and the reimporting a variety of suspect files (this was suggested online). I shut down my laptop & tryed it again the next day.  No Mach-O error, go figger!

Simple Google Maps JavaScript API v2 example

This is Google Earth's (GE) hello world example.  It requires an API key that you register for from your Google account.  See this URL for the details.  Nice easy map!

StarTrax - Google Earth 3D track animator

This is another track animation program that works within Google Earth.  It's tailored towards flying tracks, and has a bunch of cool features including;

• realistic models (everything from a Cessna 172 to the Airbus 330 and even including a Cirrus sailplane)
• various view modes (see below)
• Multiple tracks (this I haven't been able to make work nicely)

external view w/Airbus






external view with Twin Otter model & instruments