How to get substring of NSString?

Question

If I want to get a value from the NSString @\"value:hello World:value\", what should I use?

The return value I want is @\"hello World\".

Answer 1

Here's a simple function that lets you do what you are looking for:

- (NSString *)getSubstring:(NSString *)value betweenString:(NSString *)separator
{
    NSRange firstInstance = [value rangeOfString:separator];
    NSRange secondInstance = [[value substringFromIndex:firstInstance.location + firstInstance.length] rangeOfString:separator];
    NSRange finalRange = NSMakeRange(firstInstance.location + separator.length, secondInstance.location);

    return [value substringWithRange:finalRange];
}

Usage:

NSString *myName = [self getSubstring:@"This is my :name:, woo!!" betweenString:@":"];