Validate valid phone number entry

Question

I want to figure out invalid phone numbers entered in edittext before hitting the OTP api. Invalid phone numbers pattern may looks like these patterns +91-0000000000 / +91-0000000011 / +91-1234567890 ...and so on. Already added a check to validate invalid phone number but it didn't helps in detecting invalid patterns of phone numbers which can't exist.

private boolean isValidMobile(String phone) {
return android.util.Patterns.PHONE.matcher(phone).matches();    
}

Anyone please suggest how to handle these numbers before hitting the OTP api. Thanks in advance.

Answer 1

To validate a 10 digit Mobile number, here is a working code. Hope this works for you too.

String number = binding.editNumber.getText().toString();
// isPhoneValid = isValidMobileNo(number);
if (isValidMobileNo(number)) {
        isPhoneValid = true;
else {
        Log.d("Result: ","Not Valid");
        isPhoneValid = false;
        valid = false;
}

private boolean isValidMobileNo(String str) {
    Pattern pattern = Pattern.compile("(0/91)?[6-9][0-9]{9}");
    Matcher match = pattern.matcher(str);
    return (match.find() && match.group().equals(str));
}

Test Sample can be seen [ here ], an error message set to the EditText can be seen in this example.