没有实现接口成员'IComparable.CompareTo(Object)' [英] does not implement interface member 'IComparable.CompareTo(Object)'

问题描述

我有一个android的.aar文件.我正在尝试在我的xamarin.android应用程序中使用它.我按照链接

要解决此问题，需要在"添加项"文件夹中创建需要接口成员实现"IComparable.CompareTo(Object)"的库类的部分类，如下所示:

名称空间应与绑定库中的名称空间相同，在这种情况下，名称空间应为:" Hirondelle.Date4j ".

 使用Java.Lang;命名空间Hirondelle.Date4j{公共局部类DateTime:Object，IComparable{int IComparable.CompareTo(Object obj){返回CompareTo((DateTime)obj);}}} 

然后应该成功构建库.

I have an .aar file of android. I am trying to use it in my xamarin.android app. I followed the steps from the given in the link https://developer.xamarin.com/guides/android/advanced_topics/binding-a-java-library/binding-an-aar/

but when I am trying to build my library I am getting following error

"does not implement interface member 'IComparable.CompareTo(Object)'"

I found some solution for it where it is mentioned that in metadata.xml we need to add some attribute. so I added the following line there

path="/api/package[@name='com.logicjunction.ljindoorandroidsdk']/class[@name='FloorPlanBeaconsMapping']/implements[@name='java.lang.Comparable']" 

name="type">java.lang.Comparable>

But still getting same error. How I can fix this?

解决方案

Getting the error when build the library without interface implementation IComparable.CompareTo:

To resolve the issue, need create at "Additions" folder a partial class of the library class that requires interface member implementation 'IComparable.CompareTo(Object)', like below:

The namespace should be the same like at binding library, in this case, it is: "Hirondelle.Date4j".

using Java.Lang;
namespace Hirondelle.Date4j
{
    public partial class DateTime : Object, IComparable
    {
        int IComparable.CompareTo(Object obj)
        {
            return CompareTo((DateTime)obj);
        }
    }
}

Then the library should be built with success.

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