public void afterTextChanged(Editable s) {            if (textInputLayout.getEditText().getText().toString().length() != length) {                textInputLayout.setError(errorInfo);                textInputLayout.setErrorEnabled(true);            } else {                textInputLayout.setError(null);//必须要添加否则出现空白不隐藏的问题                textInputLayout.setErrorEnabled(false);            }        }