urlRegexPattern constant
        
        String
        const urlRegexPattern
        
      
      
      
Implementation
static const urlRegexPattern =
    r"[(http(s)?|ftp):\/\/(www\.)?a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)";