将照片添加到谷歌播放报摊中的图库

我试图在Google Play报摊的文章画廊中添加几张图片，但没有成功。我尝试添加3张大小合适的图片，但它们无法显示在文章的图库中。

<media:content url="[URL IMAGE]"
        type="image/png" expression="full" width="538" height="190">
  <media:description type="plain">[DESCRIPTION]</media:description>
  <media:credit role="author" scheme="urn:ebu">[AUTHOR]</media:credit>
</media:content>

这是我的元素的一个例子：<item>

<item>
    <title><![CDATA[Arquean a cafetería]]></title>
    <link><![CDATA[http://google/wE-bacdkE]]></link>
    <content:encoded><![CDATA[Today we’re introducing a new age-based rating system for apps and games on Google Play. We know that people in different countries have different ideas about what content is appropriate for kids, teens and adults, so today’s announcement will help developers better label their apps for the right audience. Consistent with industry best practices, this change will give developers an easy way to communicate familiar and locally relevant content ratings to their users and help improve app discovery and engagement by letting people choose content that is right for them.

    Starting now, developers can complete a content rating questionnaire for each of their apps and games to receive objective content ratings. Google Play’s new rating system includes official ratings from the International Age Rating Coalition (IARC) and its participating bodies, including the Entertainment Software Rating Board (ESRB), Pan-European Game Information (PEGI), Australian Classification Board, Unterhaltungssoftware Selbstkontrolle (USK) and Classificação Indicativa (ClassInd). Territories not covered by a specific ratings authority will display an age-based, generic rating. The process is quick, automated and free to developers. In the coming weeks, consumers worldwide will begin to see these new ratings in their local markets.]]></content:encoded>
    <author>Grupo Jorgesys</author>
    <media:content url="http://www.jorgesys.com/images/1973850.png"
    type="image/png" expression="full" width="538" height="190"><media:description type="plain"><![CDATA[Android]]></media:description><media:credit role="author" scheme="urn:ebu"><![CDATA[Grupo Jorgesys  / Staff]]></media:credit></media:content>
    <media:content url="http://flv.grupoJorgesys.com/flash/elnorte/articulo/mp3/online/1/489/488838.mp3" medium="audio"><media:title><![CDATA[Arquean a cafetería]]></media:title><media:description><![CDATA[Arquean a cafetería]]></media:credit></media:content>

    <media:content url="http://www.jorgesys.com/images/1973852.png"
    type="image/png" expression="full" width="538" height="190"><media:description type="plain"><![CDATA[Android0]]></media:description><media:credit role="author" scheme="urn:ebu"><![CDATA[Grupo Jorgesys  / Staff]]></media:credit></media:content>

    <media:content url="http://www.jorgesys.com/images/1973856.png"
    type="image/png" expression="full" width="538" height="190"><media:description type="plain"><![CDATA[Android1]]></media:description><media:credit role="author" scheme="urn:ebu"><![CDATA[Grupo Jorgesys  / Staff]]></media:credit></media:content>

    <media:content url="http://www.jorgesys.com/images/1973858.png"
    type="image/png" expression="full" width="538" height="190"><media:description type="plain"><![CDATA[Android2]]></media:description><media:credit role="author" scheme="urn:ebu"><![CDATA[Grupo Jorgesys  / Staff]]></media:credit></media:content>

    <media:content url="http://www.jorgesys.com/images/1973860.png"
    type="image/png" expression="full" width="538" height="190"><media:description type="plain"><![CDATA[Arquean a cafetería]]></media:description><media:credit role="author" scheme="urn:ebu"><![CDATA[Grupo Jorgesys  / Staff]]></media:credit></media:content>

</item>