Get last path part from NSString

Question

Hi all i want extract the last part from string which is a four digit number \'03276\' i:e http://www.abc.com/news/read/welcome-new-gig/03276

how can i

Answer 1

If the last part of the string is always the same length (5 characters) you could use this method to extract the last part:

- (NSString *)substringFromIndex:(NSUInteger)anIndex

Use the length of the string to determine the start index.

Something like this:

NSString *inputStr = @"http://www.abc.com/news/read/welcome-new-gig/03276";
NSString *newStr = [inputStr substringFromIndex:[inputStr length]-5];
NSLog(@"These are the last five characters of the string: %@", newStr);

(Code not tested)

Answer 2

Since *nix uses the same path separators as URL's this will be valid as well.

[@"http://www.abc.com/news/read/welcome-new-gig/03276" lastPathComponent]

Answer 3

If you know the length of the number, and it's not gonna change, it can be as easy as:

NSString *result = [string substringFromIndex:[string length] - 4];

Answer 4

If you know how many characters you need, you can do something like this:

NSString *string = @"http://www.abc.com/news/read/welcome-new-gig/03276";
NSString *subString = [string substringFromIndex:[string length] - 5];

If you just know that it's the part after the last slash, you can do this:

NSString *string = @"http://www.abc.com/news/read/welcome-new-gig/03276";
NSString *subString = [[string componentsSeparatedByString:@"/"] lastObject];

Answer 5

NSString *str = @"http://www.abc.com/news/read/welcome-new-gig/03276";  
NSArray *arr = [str componentSeparatedBy:@"gig/"];  
NSString *strSubStringDigNum = [arr objectAtIndex:1];  

strSubStringDigNum will have the value 03276

Answer 6

You can also use

NSString *sub = [@"http://www.abc.com/news/read/welcome-new-gig/03276" lastPathComponent];