Question

This might be simple. I have searched, not found yet.

How do I convert the NSString @”20100216190205″ to an NSString of format @”yyyy-MM-dd HH:mm:ss”.

ie: @”2010-02-16 19:02:05″

EDIT:
I wanted to avoid using the NSDateFormatter to be more generic, for other situations.

Answer 1

Purely as an exercise in writing code:

NSString* digits = @"20100216190205"; // this is probably a parameter somewhere
NSMutableString* formatted = [digits mutableCopy];
[formatted insertString:@":" atIndex:12];
[formatted insertString:@":" atIndex:10];
[formatted insertString:@" " atIndex:8];
[formatted insertString:@"-" atIndex:6];
[formatted insertString:@"-" atIndex:4];
NSLog(@"original string: %@ -> formatted: %@", digits, formatted);

But I agree: go easy on yourself, and use a date formatter for this.