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| // 封装一个方法 在utils中 名为 downloadSaveFile.js
| // 使用时 引入（按照自己的路劲写） import { downloadFiles} from '../../utils/downloadSaveFile'
|
|
| function downloadFiles(type, urls) {
| checkAuth(() => {
| wx.showLoading({
| title: '正在下载',
| mask: true
| })
| for (let i = 0; i < urls.length; i++) {
| downloadSaveFile(
| urls[i],
| );
| }
| })
| }
|
| //下载文件
| function downloadSaveFile(url, successc) {
| let isimg = 'bmp,jpg,png,tif,gif,pcx,tga,exif,fpx,svg,psd,cdr,pcd,dxf,ufo,eps,ai,raw,wmf, jpeg'.includes(url.split('.').slice(-1))
| if (isimg) {
| // 如果是图片类型
| wx.downloadFile({
| url: url,
| success: res => {
| if (res.statusCode === 200) {
| wx.saveImageToPhotosAlbum({
| filePath: res.tempFilePath,
| success: res => {
| wx.showToast({
| title: '保存成功',
| icon: "none"
| })
| },
| fail: res => {
| wx.showToast({
| title: '保存失败',
| icon: "none"
| })
| }
| })
|
| }
| }
| })
|
| } else {
| // 如果是视频类型
| wx.downloadFile({
| url: url,
| success: res => {
| if (res.statusCode === 200) {
| wx.saveVideoToPhotosAlbum({
| filePath: res.tempFilePath,
| success: res => {
| // successc && successc();
| wx.showToast({
| title: '保存成功',
| icon: "none"
| })
| },
| fail: res => {
| wx.showToast({
| title: '保存失败',
| icon: "none"
| })
| }
| })
| }
| }
| })
| }
| }
|
| //检查权限
| function checkAuth(gotc) {
| //查询权限
| wx.showLoading({
| title: '检查授权情况',
| mask: true
| })
| wx.getSetting({
| success(res) {
| wx.hideLoading();
| if (!res.authSetting['scope.writePhotosAlbum']) {
| //请求授权
| wx.authorize({
| scope: 'scope.writePhotosAlbum',
| success() {
| //获得授权，开始下载
| gotc && gotc();
| },
| fail() {
| wx.showModal({
| title: '',
| content: '保存到系统相册需要授权',
| confirmText: '授权',
| success(res) {
| if (res.confirm) {
| wx.openSetting({
| success(res) {
| if (res.authSetting['scope.writePhotosAlbum'] === true) {
| gotc && gotc();
| }
| }
| })
| }
| },
| fail() {
| wx.showToast({
| title: '打开设置页失败',
| icon: 'none',
| })
| }
| })
| }
| })
| } else {
| //已有授权
| gotc && gotc();
| }
| },
| fail() {
| wx.hideLoading();
| wx.showToast({
| title: '获取授权失败',
| icon: 'none',
| })
| }
| })
| }
|
| module.exports = {
| downloadFiles,
| checkAuth,
| downloadSaveFile
| };
|
|
