把explore.json中
{
"backgroundTextStyle":"light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "最新相册",
"navigationBarTextStyle":"black",
"enablePullDownRefresh":"true"
}
"enablePullDownRefresh":"true"
改为：（true的双引号去掉即可）
"enablePullDownRefresh":true