Objective-C: Best way to extract substring from NSString?

user_194423 0
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I have a space-separated string like @"abc xyz http://www.example.com aaa bbb ccc".

How can I extract the substring @"http://www.example.com" from it?

nsstring objective-c
8 Answers

Here is my version of the script... Hopefully it's clean and easy to implement. It does a substr of the characters based on limits... Mine is used for a textarea, but can obviously be adapted to textfields :)

 -(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
 {

      int maxLength = 100;
      int currentLength = [self.messageField.text length];

      if( currentLength > maxLength )
      {

           NSString *newMessageText = [self.messageField.text substringWithRange:NSMakeRange(0, maxLength)];

           [self.messageField setText:newMessageText];

           return NO;

     }
     else
     {

           return YES;

     }

 }
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