Regex pattern throws ANR on Android -

i developing android application email validation, using regex, attached below:

it works in conditions, conditions, gives me app not responding errors.

for example, if put text specific length, no @ , gives me anr. if email length below range gives me proper validation error. regex looks like:

 public static final string email_pattern ="(?:[a-za-z0-9!#$%&'*+-/=?^_`{|}~.]*)+(\\w[a-za-z0-9!#$%&'*+-/=?^_`{|}~.]+)@(?:[a-za-z0-9-.]*)";  // here gives proper validation error  fgefjkbgjerk.com gives anr         sjkfghhrghergfhfgfghkfgkfgkjkgergejkgrjekfghfghfg.com   public static boolean checkemailvalidations(string regex,string email){     boolean patternstatus=false;     pattern pattern= pattern.compile(regex);     matcher matcher = pattern.matcher(email);     if( matcher.matches()){         patternstatus=false;     }else{         patternstatus=true;     }     return patternstatus; } 

is there problem regex or implementation?

i believe should use pattern this:

public static final pattern  email_pattern =  pattern.compile("^[a-z0-9._%+-]+@[a-z0-9.-]+\\.[a-z]{2,6}$", pattern.case_insensitive); 

and if you're not sure matcher, use pattern:

 public static boolean checkemailvalidations(string email) {             matcher matcher = email_pattern .matcher(email);             return matcher.find(); }