Trim spaces from end of a NSString

Question

I need to remove spaces from the end of a string. How can I do that? Example: if string is "Hello " it must become "Hello"

Answer 1

Another solution involves creating mutable string:

//make mutable string
NSMutableString *stringToTrim = [@" i needz trim " mutableCopy];

//pass it by reference to CFStringTrimSpace
CFStringTrimWhiteSpace((__bridge CFMutableStringRef) stringToTrim);

//stringToTrim is now "i needz trim"

Answer 2

To remove whitespace from only the beginning and end of a string in Swift:

Swift 3

string.trimmingCharacters(in: .whitespacesAndNewlines)

Previous Swift Versions

string.stringByTrimmingCharactersInSet(.whitespaceAndNewlineCharacterSet()))

Answer 3

This will remove only the trailing characters of your choice.

func trimRight(theString: String, charSet: NSCharacterSet) -> String {

    var newString = theString

    while String(newString.characters.last).rangeOfCharacterFromSet(charSet) != nil {
        newString = String(newString.characters.dropLast())
    }

    return newString
}

Answer 4

let string = " Test Trimmed String "

For Removing white Space and New line use below code :-

let str_trimmed = yourString.trimmingCharacters(in: .whitespacesAndNewlines)

For Removing only Spaces from string use below code :-

let str_trimmed = yourString.trimmingCharacters(in: .whitespaces)

Answer 5

In Swift

To trim space & newline from both side of the String:

var url: String = "\n   http://example.com/xyz.mp4   "
var trimmedUrl: String = url.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())

Answer 6

To trim all trailing whitespace characters (I'm guessing that is actually your intent), the following is a pretty clean & concise way to do it:

NSString *trimmedString = [string stringByReplacingOccurrencesOfString:@"\\s+$" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, string.length)];

One line, with a dash of regex.