相册浏览时，浏览到最后一张，不能返回到第一张循环浏览

1 VfxBool VappGalleryViewerPage::canGoNext()

 {

     if(!m_mediaList)

     {

         return VFX_FALSE;

     }

 //hsz start添加如下代码

 if((m_currentIndex + 1) >= m_mediaList->getMediaCountInGroup(0))

 {

 m_currentIndex = -1;

 }

 //hsz end

     return VfxBool((m_currentIndex + 1) < m_mediaList->getMediaCountInGroup(0));

 }

 2 VfxBool VappGalleryViewerPage::canGoPrevious()

 {

     if(!m_mediaList)

     {

         return VFX_FALSE;

     }

     if(m_currentIndex > 0 && m_mediaList->getMediaCountInGroup(0) > 0)

     {

         return VFX_TRUE;

     }

     else

     {

         //hsz start添加如下代码

         m_currentIndex = m_mediaList->getMediaCountInGroup(0) - 1;

         return VFX_TRUE;

         //hsz end

        // return VFX_FALSE;//删除此语句

     }

 }

 3 MediaIndex VappGalleryViewerPage::getNextIndex()const

 {

     if(NULL == m_mediaList)

     {

         return 0;

     }

     //hsz start添加如下代码

     if(m_currentIndex == m_mediaList->getMediaCountInGroup(0) - 1)

         {

         return 0;

         }

     else

         {

         return vfxMin(m_mediaList->getMediaCountInGroup(0) - 1, m_currentIndex + 1);

         }

     //hsz end

 //删除如下语句

    // return vfxMin(m_mediaList->getMediaCountInGroup(0) - 1, m_currentIndex + 1);

 }

 4 MediaIndex VappGalleryViewerPage::getPrevIndex()const

 {

 //hsz start添加如下代码

     if(m_currentIndex == 0)

         {

            return m_mediaList->getMediaCountInGroup(0) - 1;

         }

     else

         {

             return vfxMax(0, m_currentIndex - 1);

         }

     //hsz end

     //return vfxMax(0, m_currentIndex - 1);//删除此语句

 }