
命令行输入
ionic cordova plugin add cordova-plugin-screen-orientation
npm install --save @ionic-native/screen-orientation在 ./src/app/app.module.ts 中添加
import {ScreenOrientation} from "@ionic-native/screen-orientation";在 provides 中添加
ScreenOrientation,在 ./config.xml 中添加
<preference name="Orientation" value="portrait" />portrait-primary        =>      不允许副竖屏
portrait-secondary      =>      不允许副竖屏
landscape-primary       =>      不允许副竖屏
landscape-secondary     =>      不允许副竖屏
portrait                =>      允许主竖屏和副竖屏
landscape               =>      允许主横屏和副横屏
any                     =>      所有都允许