如何在Firestore数据库中运行多个事务？ 我面临的问题是

Question

I am trying to run the multiple transactions in firestore database in android. but they are not working all at one time. only transaction is working right now that is of DocumentReference PostRef.

please assist in running multiple transactions.

db.runTransaction(new Transaction.Function<Void>() {
    @Override
    public Void apply(Transaction transaction) throws FirebaseFirestoreException {

       DocumentSnapshot documentSnapshot1 = transaction.get(PostRef);
       boolean l2 = documentSnapshot1.getBoolean("l2");
        if(l2 == false) {
            transaction.update(PostRef, "l2", true);
            return null;

        }

        DocumentSnapshot documentSnapshot2 = transaction.get(PostUserRef);
        long l11 = documentSnapshot2.getLong("l1");
        { transaction.update(PostRef, "l1", l11+1);

        }


        DocumentSnapshot snapshot = transaction.get(likesRef);
        boolean l1 = snapshot.getBoolean("l1");
        if (l1 == false) {

            transaction.update(likesRef, "l1", true);
            //2 transactions to update userprofile



            return null;
        } else
        {
            throw new FirebaseFirestoreException("You already liked",
                    FirebaseFirestoreException.Code.ABORTED);
        }


    }
})

Answer 1

我要做的是将多个事务设置为一个函数，然后在onclick事件中调用这些函数，然后执行所需的功能