How to show images like instagram posts

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Android

MongoDB

My problem is I'm receiving all the links correctly but they are being shown separately. Now my question is how to receive image links in such a way that the date packet containing multilinks will be shown in viewpagers and single imglink will be shown directly like instagram .

What I have tried:

I'm trying to store image links of images uploaded from user's device by date packets in mongodb.I've created a "post" collection where images are stored inside the documents created by their email ids in this format {
"_id: "abc",
"17-11-2017/14-48": ["imglink1","imglink2"],
"17-11-2017/14-50": ["imglink1"]
}