How To Convert A Map Into Arraylist From Firestore Document

My goal is to get query a collection and get the documents each document has three or five hashmap in it .my aim is to get the documents with different id's and populate in nested

Solution 1:

It looks like you want to parse the map to get values, you can do this for multiple keys:

for (Map.Entry<String, PostBattle> params : batPost.entrySet()) {
     if (params.getKey().equals("imageuri")) { // or something else//add to your arraylist  

                                    }
}

or if you require only one:

Stringimageuri= batPost.getKey("imageuri").toString();

add the above image uri to your arraylist

If you want to seperate on basis of ids:

Map<String, yourobject> idmaps = document.getData();
for (Map.Entry<String, yourobject> id : idmaps.entrySet()) {
// do your code here// first get the id String userid = id.getKey();

//then do what you have done above
yourobject = id.getValue();

// do your logic on above object this will seperate your userids

}