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getFileSystemManager [图片]

做了一个文件预览功能，在预览时使用没有问题，但是上线后处于点击没有反应状态。不知官方是什么形式 //文件预览功能微信预览需要先下载 uni.downloadFile({ url: val, success: function(res) { uni.hideLoading(); var filePath = res.tempFilePath; setTimeout(() => { //打开文档查看 uni.openDocument({ filePath: filePath, success: function(res) { uni.showToast({ icon: 'none', mask: true, title: '文件已打开', //保存路径 duration: 3000, }); } }); }, 1000) }, fail: function(err) { uni.hideLoading(); } });