Remove character from string in Kotlin

The more logical technic is not to replace but to filter

buClickValue = buClickValue.filterNot { it == "."[0] }

or

buClickValue = buClickValue.filterNot { it == '.' }

Or to extend

filtered = ".,;:"

buClickValue = buClickValue.filterNot { filtered.indexOf(it) > -1 }

The replace() method is designed to return the value of the new String after replacing the characters. In your case, the value obtained after replacing the characters is never reassigned back to the original variable.

Specifically in your else clause, the line should be changed to -

buClickValue = buClickValue.replace(".", "")