Question

我正在使用FirestoreRecyclerAdapter并遇到问题。

                Query query = db
                .collection(SOME_COLLECTION)
                .whereEqualTo("key", key)                    
                .orderBy("dueDate");

如果我把orderBy，第一次加载数据。实时更新无效。我尝试将orderBy放在最后，以及更改排序字段。

如果我删除orderBy，一切正常。但没有订购。

根据文档，它不适用于范围比较。有什么想法吗？

更新。这是适配器选项。

             FirestoreRecyclerOptions<Payment> options = 
             new  FirestoreRecyclerOptions.Builder<Payment>()
            .setQuery(query, Payment.class)
            .build();

这是付款。

public class Payment {

private String key;
private double amount;
private Date cDate;
private Date paidDate;
private Date dueDate;
private boolean isPaid;

public Payment() {
}

Payment(String key, double amount, Date cDate, Date paidDate, Date dueDate, boolean isPaid) {
    this.key = key;
    this.amount = amount;
    this.cDate = cDate;
    this.paidDate = paidDate;
    this.dueDate = dueDate;
    this.isPaid = isPaid;
    }
}

这是付款持有人。

class PaymentHolder extends RecyclerView.ViewHolder {

private TextView pDate, pAmount;
private CheckBox pDone;

PaymentHolder(View itemView) {
    super(itemView);

    pDate = itemView.findViewById(R.id.pDate);
    pAmount = itemView.findViewById(R.id.pAmount);
    pDone = itemView.findViewById(R.id.checkBox);


}}

这是适配器。

firestoreRecyclerAdapter = new FirestoreRecyclerAdapter<Payment, PaymentHolder>(options) {


        @Override
        protected void onBindViewHolder(final PaymentHolder paymentHolder, final int position, final Payment payment) {

            final DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM);

            final String id = getSnapshots().getSnapshot(position).getId();

            paymentHolder.getpDate().setText(dateFormat.format(payment.getDueDate()));
            paymentHolder.getpAmount().setText(getAmount(payment.getAmount()));
            paymentHolder.getpDone().setChecked(payment.isPaid());


        }


        @Override
        public PaymentHolder onCreateViewHolder(ViewGroup viewGroup, int i) {

            View view = LayoutInflater.from(viewGroup.getContext())
                    .inflate(R.layout.payment_item, viewGroup, false);

            final PaymentHolder paymentHolder = new PaymentHolder(view);

            return paymentHolder;
        }
    };

    recyclerView.setAdapter(firestoreRecyclerAdapter);

所有设置都符合示例，没什么特别的。

Answer 1

正如弗兰克所说，你应该创建索引。如果您在日志中看起来更精确，则会出现警告和创建索引的链接。只需点击链接就可以了。大哥为你创造了正确的索引。谢谢Frank。

FirestoreRecyclerAdapter不更新视图

1 个答案: