监听播放器的全屏操作并触发plus的强制横屏

plus.screen.lockOrientation('landscape-primary');

监听播放器的退出全屏时并触发强制竖屏

plus.screen.lockOrientation('portrait')

附上使用dplayer播放器的视频全屏操作

export default {
        mounted() {
			this.player = this.$refs.player.dp
				// 监听播放器全屏事件触发强制横屏
			this.player.on('fullscreen', function() {
				plus.screen.lockOrientation('landscape-primary');
			});
			 //监听播放器退出全屏事件并触发强制竖屏
			this.player.on('fullscreen_cancel', function() {
				plus.screen.lockOrientation('portrait')
			});
			}
      }