Question

How can I read a string from a text input in objective C (iOS SDK), and treating it as UTF-16, encode the bytes to base64?

I’m struggling with both aspects, both treating the textbox’s value as UTF-16 and then encoding these bytes to UTF-16.

I appreciate there are probably partial or similar questions to this on SO, I have searched (and read the various posts), but I’m an iOS/Objective C beginner and could really benefit from a complete example here.

Answer 1

Convert the NSString to a UTF16-encoded NSData by using

[str dataUsingEncoding:NSUTF16StringEncoding]

then convert the resulting NSData into Base64 using e.g. the answer from Converting between NSData and base64 strings.