Check if Swift text field contains non-whitespace

February 14, 2023 by Tarik

This answer was last revised for Swift 5.2 and iOS 13.5 SDK.

You can trim whitespace characters from your string and check if it’s empty:

if !textField1.text.trimmingCharacters(in: .whitespaces).isEmpty {
    // string contains non-whitespace characters
}

You can also use .whitespacesAndNewlines to remove newline characters too.