Flutter query cache of firestore

Question

I want to get the count of cached data of firestore whether i am offline or online in both conditions to differentiate new and old records in flutter android.

djalmafreestyler · Accepted Answer · 2019-12-23 12:34:49Z

1

You can do that for example by using 2 FutureBuilders, using the parameter "source" from ".getDocuments(source: )", you can set Source.cache (retrieves data from the cache) or Source.server (retrieves data from the server).

FutureBuilder(
            future: Firestore.instance.collection("yourCollection").getDocuments(source: Source.cache ),
            builder: (context, snapshot) {

              if (!snapshot.hasData || snapshot.data.documents.length == null) {
                return Center(
                  child: CircularProgressIndicator(
                    valueColor: AlwaysStoppedAnimation(Colors.white),
                  ),
                );
              } else {

               print("Count: ${snapshot.data.documents.length}");

                return Container();


              }
            }
          )

answered Dec 23, 2019 at 12:34

djalmafreestyler

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