First, the number public download
First of all, the public is the page number, is used in the micro-channel built-in browser, the applet is integrated Tencent compiled language. That number of public functions that can be realized basically normal h5 can be achieved (There are exceptions, Alipay this will not work).
So that said downloaded files like that, point your phone's browser If you open a file (such as a class word, ppt of the) directly. Andrews will play a tune download, ios, then view the file is downloaded, then you can download top right corner of their own operations, or perform procedures, micro-channel browser empathy.
Second, download a small program, then divided into two cases.
1, pictures, video type
This type can be saved directly to the phone locally. First use wx.downloadfile redirect resources into a temporary path, saved to a local call to save a picture or video separately API, the code here is not a detailed description, there is a clear interpretation of the document applet developers.
2, other file types
Andrews IOS can be directly preview files (supports doc, docx, xls, xlsx, ppt, pptx, pdf several formats, which are small given the official program opens the document type description)
Reference Links: https://developers.weixin.qq.com/miniprogram/dev/api/file/wx.openDocument.html
Download the file is to use wx.downloadfile, the API calls the applet to download files and pictures, downloading video is different, the file is downloaded to the file system within the applet, the total amount of 10M, not local to the phone, only in a small program open to view.