How to localize custom Done button - iphone

Question

I use Done button in my custom view and I'd like to make its title localizable. I know that system Done button from UINavigationBar is already localized and it would be perfect to get it's localized strings somehow. Is there a way to do this?
Using the whole UINavigationBar only because of localized Done button seems to be inappropriate.
Clarification: the point is to use the same localized strings, that system uses.

Answer 1

There isn't an official way to get standard strings from the OS, but it's highly likely that all the strings will be in localized strings files, and most of those are present on the simulator (it won't have strings from apps that aren't present on the simulator, but should have almost all the strings from frameworks).
The simulator's framework directory is relative to your Xcode install directory and something like this (typing it from memory, change the version as appropriate):
Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.1.sdk/System/Library/Frameworks/UIKit.framework/
To start with, I'd look in UIKit.framework/en.lproj/*.strings (or English.lproj or en_US.lproj). Strings files are plists and will generally be binary plists on device (such files start with "bplist00"). There are various ways to open these: TextWrangler will automatically display plists as XML, and the command-line tool plutil will convert to other formats. I use the bash alias
alias plist-dump='plutil -convert xml1 -o /dev/stdout --'
When you've found the string, you have a couple of options:
Load it directly from the framework at runtime with something like
[[NSBundle bundleWithIdentifier:...] localizedStringForKey:#"DONE" value:nil table:...]
This is not recommended. Yhere's no guarantee that it will work on a different OS version. (In practice, a string like "Done" probably won't move, but the alternative is easy enough that it's not worth the fuss.)
Copy the strings into your project. I don't know of a tool to automatically do this and merge with your existing Localizable.strings, but it probably exists somewhere and would not be too difficult to write. Slightly legally dubious (but not much more so than copying strings by eye for the languages you care about); I would definitely avoid doing it on a prerelease SDK to avoid concerns about Apple's NDA.
Copy the whole strings file into e.g. UIKit.strings and use something like NSLocalizedStringFromTable(#"DONE",#"UIKit",nil). Likely to be a copyright infringement!
In practice, I think Apple is unlikely to care about copying a handful of strings/images from iOS into an iOS app. Copying them into an Android app is another matter entirely...

Answer 2

Just add needed localization in project settings, all system stuff like done button will be localized by device locale if you added it, else it willbe on default language which you also should set up.
For custom button:
[self.myButton setTitle:NSLocalizedString(#"my localizable title", #"") forState:UIControlStateNormal];
It also valid for any NSString in your project.
NSString *someText = NSLocalizedString(#"my localizable title", #"");
self.myLabel.text = someText;
You should make your app localizable anyway by adding needed localizations.
After that just follow this instructions:
http://www.raywenderlich.com/2876/how-to-localize-an-iphone-app-tutorial
But I really recommend to you to do this in the end of project.