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该弄的都按照文档上弄了，但是还是显示没权限是什么鬼 [图片][图片]

在安卓机上下载30个视频毫无压力 ，但是同样的代码在IOS 手机一直报 errMsg: "downloadFile:fail'savefile: fail the maximum size of the file storage limit is exceeded" [图片]  // 下载素材   handleDownload() {     let _this = this;     _this.getSetting(function (e) {       if (e) {         if (_this.data.disabled) {           _this.setData({             disabled: false           })         }         let list = _this.data.list;         let listVide = [];         let file_ids=[];         for (let index = 0; index < list.data.length; index++) {           if (list.data[index].checked) {             listVide.push(list.data[index].video)             file_ids.push( list.data[index].file_id)           }         }         if (listVide.length<=0) {           wx.showModal({             title: '提示',             content: '请选择视频~',             showCancel: false,           })           _this.setData({             disabled: true           })           return false         }         wx.showLoading({           title: '下载中',         })         let videos=function(){           for (let a = 0; a < list.data.length; a++) {             list.data[a].checked=false;           }           _this.setData({             list           });           _this.saveVideo(file_ids);         }         let indexVide = 0;         for (let i = 0; i < listVide.length; i++) {             let fileName = new Date().valueOf();             wx.downloadFile({               url: listVide[i],               filePath: wx.env.USER_DATA_PATH + '/' + fileName + i + '.mp4',               success: res => {                 let filePath = res.filePath;                 wx.saveVideoToPhotosAlbum({                   filePath,                   success: file => {                     indexVide++;                     let fileMgr = wx.getFileSystemManager();                     fileMgr.unlink({                       filePath: wx.env.USER_DATA_PATH  + '/' + fileName + i + '.mp4',                       success: function (r) {                          },                     })                     if (indexVide > listVide.length-1) {                       wx.hideLoading()                       wx.showToast({                         title: '视频下载完成',                         icon: 'success',                         duration: 2000,                         success(){                           videos()                           _this.setData({                             disabled:true                           })                         }                       })                     }                   },                   fail: err => {                     wx.hideLoading()                     if (err.errMsg === 'saveVideoToPhotosAlbum:fail auth deny') {                       wx.showModal({                         title: '提示',                         content: '需要您授权保存相册',                         showCancel: false,                         success: data => {                           wx.openSetting({                             success(settingdata) {                               if (settingdata.authSetting['scope.writePhotosAlbum']) {                                 wx.showModal({                                   title: '提示',                                   content: '获取权限成功,再次点击下载即可保存',                                   showCancel: false,                                 })                               } else {                                 wx.showModal({                                   title: '提示',                                   content: '获取权限失败，将无法保存到相册哦~',                                   showCancel: false,                                 })                               }                             },                           })                         }                       })                     }                   }                 })               }             })         }       }     })

微信开发者工具跟基础库都是最高版本了，但是还是会有报错；开发工具是1.05版 基础库是2.16.1[图片]