validate an phone number on Android

public final static boolean isValidPhone(CharSequence target) {
   if (target == null) {
       return false;
   } else {
       return android.util.Patterns.PHONE.matcher(target).matches();
   }
}

Validate an e-mail address on Android

public final static boolean isValidEmail(CharSequence target) {
    if (target == null) {
        return false;
    } else {
        return android.util.Patterns.EMAIL_ADDRESS.matcher(target).matches();
    }
}