CODEWITHSUNDEEP
iphonecocoansstring
Chandan Shetty SP
Chandan Shetty SP

Reputation: 5117

String Operation

If there is an NSString like "com.mycompany.purchase1" How to get only purchase1.

NSString *mainString = @"com.mycompany.purchase1";

-(NSString*)getLastComponent : (NSString*) mainString
{
NSString *string;
//Implementation
return string;//It should return only "purchase1"
}

I tried using lastPathComponent,pathExtension and also i can't use substringToIndex since the string may be of varying length.

Upvotes: 1

Views: 170

Answers (3)

Ishu
Ishu

Reputation: 12787

-(NSString*)getLastComponent : (NSString*) mainString
{
  NSString *string1;

  NSArray *arr=[mainString componentsSeparatedByString:@"."];
  string1=[arr objectAtIndex:([arr count]-1)];
  return string;
}

use above code.

Upvotes: 0

mackross
mackross

Reputation: 2234

Don't want donkim's answer as he is correct. Just showing the implementation I would use

-(NSString*)lastComponentOfString:(NSString*)string separatedByString:(NSString*)separator
{
    return [[string componentsSeparatedByString:separator] lastObject];
}

Use 

NSString *string = @"com.mycompany.purchase1";
[... lastComponentOfString:string separatedByString:@"."];

Upvotes: 7

donkim
donkim

Reputation: 13137

You could use the - (NSArray *)componentsSeparatedByString:(NSString *)separator method in NSString. Check to see that NSArray has a count greater than 0 and the last component of it ([array objectAtIndex:[array count] - 1]) will be what you want.

Upvotes: 2

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