Question

i have an UITextField which is allowing space

using the following code snippet it trims all the white space from the string (Text Field Text)

NSCharacterSet *whitespace = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSString *trimmed = [rawString stringByTrimmingCharactersInSet:whitespace];

but i want to trim only the starting space of the Text that means

Example: @” SAMPLE TEXT”= @”SAMPLE TEXT”

can any one help me how to achieve this

Answer 1

First find the first character that is not a whitespace or newline. Then create a substring from that character’s location and onwards.

NSString *justLeaveAPonyTail = @"   Bla bla bla    ";
NSCharacterSet *allExceptWhitespace = [[NSCharacterSet whitespaceAndNewlineCharacterSet] invertedSet];
NSRange range = [justLeaveAPonyTail rangeOfCharacterFromSet:allExceptWhitespace];
if (range.location != NSNotFound) 
{
    justLeaveAPonyTail = [justLeaveAPonyTail substringFromIndex:range.location];
}

// justLeaveAPonyTail is now @"Bla bla bla   "