解决
plus.screen.lockOrientation('portrait-primary'); //强制App竖屏,不可旋转横屏
"screenOrientation": [ //应用支持的横竖屏
"portrait-primary", //支持竖屏
// "portrait-secondary", //支持反向竖屏
"landscape-primary" //支持横屏
// "landscape-secondary" //支持反向横屏
],