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使用uni-app开发,video组件的视频封面poster在模拟器显示成功,真机无效?

<video
                  id="myVideo2"
                  src="http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400"
                  binderror="videoErrorCallback"
                  :show-center-play-btn='false'
                  :show-play-btn="true"
                  :poster="items.poster"
                  controls
></video>


data(
items: {
                    src: 'http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400',
                    poster: 'http://static.roncoos.com/os/000.jpg'
                },
)
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