How to force EditText to accept only numbers?

Question

how to force the EditText to accept only numbers.?

Answer 1

This is the final solution:

 public static void enforceEditTextUseNumberOnly(EditText field) {
        Typeface existingTypeface = field.getTypeface();
        field.setInputType((InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD));
        field.setTransformationMethod(new NumericKeyBoardTransformationMethod());
        field.setTypeface(existingTypeface);
        if (field.getParent().getParent() instanceof TextInputLayout) {
            ((TextInputLayout) field.getParent().getParent()).setPasswordVisibilityToggleEnabled(false);
        }
    }

  private static class NumericKeyBoardTransformationMethod extends PasswordTransformationMethod {
        @Override
        public CharSequence getTransformation(CharSequence source, View view) {
            return source;
        }
    }