I got a,
<input type="file" multiple accept="image/*" />
and I want my android users to be able to upload multiple files at a time. Users using nexus-5 report being unable to upload multiple files at a time. I also tried adding capture="camera" to the input but this only auto open the camera and only associate one picture at a time again. This works everywhere except on Android.
Is there anything I am missing?
I've hit the same brick wall. I've tried a number of mobile browsers and can't find any that work.
I found this link that tells you that none of the Android browsers support this: http://caniuse.com/#feat=input-file-multiple
From extensive searching, I've seen information that suggests that Chromium supports this (but no beta yet) and it should make it into Chrome for Android but no indication of time-frame.
This seems to have changed since my last answer. If you now look at: http://caniuse.com/#feat=input-file-multiple
You'll now see that Chrome 42 (or better) for Android does now support multiple file upload provided you're running Android 5.0 or better. That's quite a limitation but at least it's an improvement. As Android 5 (Lollipop) gains market share (18.1% in August 2015) this become more practical.
Here's one trick. Hit your normal <input type='file' multiple> button. File picker appears: do a long press on a file to select it, then select other files.
On the top bar an "Open" appears, select it and then multiple files are added to the files collection.
Kudos to Simon@atp for this.
However, not all available file pickers may work.
As of 12/20/2017, the new Chrome browser is allowing multiple file selection. Just select your files and click "Open" in the upper right hand corner.
You could work around this limitation by using javascript, canvas and blobs.
See https://github.com/josefrichter/resize/blob/master/public/preprocess.js for some example code to get you started.
I have a similar problem. And I tested the latest chrome and FireFox, both not working.
But the QQ browser which is using X5 core is seems to be the only browser works as I expected. So My solution would be using a App shell to encapsulate the X5 SDK.
来源：https://stackoverflow.com/questions/25412406/how-to-upload-multiple-files-on-android-using-the-multiple-property