Due to the difference in regular expression between Android and Java. Something unexpected happened. So I used this wrapper class for regex in this project.

StandardRegex

class StandardRegex : RegexLib

StandardRegexMatch

class StandardRegexMatch(result: MatchResult, source: String) : RegexMatch

StandardRegexScanner

class StandardRegexScanner(patterns: Array<String>) : RegexScanner

StandardRegularExp

class StandardRegularExp(pattern: String) : RegularExp

StandardResult

data class StandardResult(val matchResult: MatchResult, var indexInScanner: Int)

StandardSearcher

class StandardSearcher(patterns: Array<String>)