Question

我的Android应用中有一个简单的表单，我使用Android Saripaar进行验证，其中一个字段是电子邮件地址，根据the first example in the docs，它应该如下所示：

@NotEmpty
@Email
private EditText emailEditText;

但是我希望它是一个可选字段，所以我省略了@NotEmpty注释：

@Email
private EditText emailEditText;

但是当我把它留空时，可以理解为将其标记为无效的电子邮件地址。是否可以在不编写自定义规则的情况下将此字段设为可选字段？

Answer 1

由于我们需要一个项目的可选电子邮件字段，因此我继续按照this answer制定了规则/注释组合。提到了Rules和Annotations的Saripaar文档。

<强> OptionalEmailRule.java

Public Declare Sub getPEC _
Lib "C:\Users\...somePath...\OPunit0011PUMP.dll" _
(ByVal typeOfPump As Integer, ByVal outflow As Double, ByRef PEC As Double, ByRef RV As Integer)

Public Declare Sub setCEPCI _
Lib "C:\Users\...somePath...\OPunit0011PUMP.dll" _
(ByVal monthIN As Integer, ByVal yearIN As Integer, ByRef RV As Integer)


Function CallPump()

Dim typeOfPump, RV, monthIN, yearIN As Integer
typeOfPump = 9
Dim outlfow, PEC As Double
outflow = 100
monthIN = 5
yearIN = 2008

Call getPEC(typeOfPump, outflow, PEC, RV)

Call setCEPCI(monthIN, yearIN, RV)




End Function

<强> OptionalEmail.Java

public class OptionalEmailRule extends AnnotationRule<OptionalEmail, String> {

    protected OptionalEmailRule(final OptionalEmail email) {
        super(email);
    }

    @Override
    public boolean isValid(final String email) {
        if(TextUtils.isEmpty(email)){
            //email is empty and therefore valid
            return true;
        }
        else{
            //email is not empty, proceed as usual
            boolean allowLocal = mRuleAnnotation.allowLocal();
            return EmailValidator.getInstance(allowLocal).isValid(email);
        }

    }
}

内部验证活动

注册注释

@ValidateUsing(OptionalEmailRule.class)
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface OptionalEmail {
    boolean allowLocal()    default false;

    int sequence()          default -1;
    int messageResId()      default -1;
    String message()        default "Invalid email";

}

注释字段

Validator.registerAnnotation(OptionalEmail.class);

如何将字段设为Android Saripaar中不需要的电子邮件字段？

1 个答案: