Using QuickRules

Using QuickRules

QuickRule is a shortcut for creating custom validation rules almost instantly. You can also assign a sequence to it, in case you want the rule to be validated in the desired sequence. This is same as the sequence attribute found in Saripaar annotations. To create your rule, you should extend from QuickRule.

public class AllowEvenNumbersRule extends QuickRule<EditText> {

    // Override this constructor ONLY if you want sequencing.
    public AllowEvenNumbersRule(int sequence) {
        super(sequence);
    }

    @Override
    public boolean isValid(EditText editText) {
        String integerString = editText.getText().toString().trim();
        return integerString.matches("\\d+") && Integer.parseInt(integerString) % 2 == 0;
    }

    @Override
    public String getMessage(Context context) {
        return context.getString(R.string.message_even_number_expected);
    }
}

After that, associate the View with your QuickRule in the Validator.

validator.put(evenNumberEditText, new AllowEvenNumbersRule(1));