I\'ve got:
-(IBAction)about {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@\"About\", @\"Title of AlertView\")
Make the Localizable.strings file localizable (click on it, press cmd+i and push the "Make file localizable" button) and add German and English localizations to it. Then write the German localization to the German version of the file and leave the English version like this:
/* Title of AlertView */
"About" = "About";
/* Cancel Button Title */
"Back" = "Back";
If you use xCode 4 you will face with such problem. Try next steps: