SwipeRefreshLayout 不会停止刷新

Question

onCreateView片段的内部方法：

swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            refresh();
        }
});

我的refresh()方法是这样的：

public void {
    //some action

    swipeRefreshLayout.setRefreshing(false);
}

但有时swipeRefresLayout并没有停止刷新。当我调试代码时，它甚至不会执行refresh()。

我该如何解决？

编辑： 这里更清晰的代码：

public class VisaCardsFragment extends Fragment {

@Bind(R.id.swipe_refresh_layout)
SwipeRefreshLayout swipeRefreshLayout;

@Bind(R.id.recycler_view_visa_cards)
RecyclerView recyclerViewVisaCards;

@Bind(R.id.text_view_message)
TextView textViewMessage;

private List<Card> cards;
private List<VisaCard> visaCards;
private VisaCardsAdapter adapter;


public VisaCardsFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_visa_cards, container, false);
    setHasOptionsMenu(true);
    ButterKnife.bind(this, view);

    visaCards = new ArrayList<>();
    adapter = new VisaCardsAdapter(visaCards);
    recyclerViewVisaCards.setAdapter(adapter);
    recyclerViewVisaCards.setHorizontalScrollBarEnabled(true);
    recyclerViewVisaCards.setLayoutManager(new LinearLayoutManager(VisaCardsFragment.this.getActivity(), LinearLayoutManager.VERTICAL, false));


    cards = Card.getActiveCards();
    if (cards.isEmpty()) {
        showMessage("Cards unavailable");
        return view;
    }

    swipeRefreshLayout.setRefreshing(true);
    getVisaResponse(); // method containing server request (RESTful) to get visa cards (VisaCard) using the data of cards (Card)


    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            refresh();
        }
    });

    return view;
}

public void refresh() {
    hideMessage();
    cards = Card.getActiveCards();
    if (cards.isEmpty()) {
        clearList();
        swipeRefreshLayout.setRefreshing(false);
        showMessage("Visa cards not found");
        return;
    }
    getVisaResponse();// method containing server request (RESTful) to get visa cards (VisaCard) using the data of cards (Card)
}

public void showMessage(String message) {
    textViewMessage.setText(message);
    textViewMessage.setVisibility(View.VISIBLE);
}

public void hideMessage() {
    textViewMessage.setText("");
    textViewMessage.setVisibility(View.GONE);
}

}

Answer 1

我想回答我自己的问题，以便有人能找到解决方案，如果他/她犯了同样的错误。

我的问题是有时swipeRefresLayout并没有停止刷新。当我调试代码时，它甚至不会执行refresh()。正如你所看到的，情况并非总是如此。

好的，什么时候发生的？它发生在cards列表为空时。

...

cards = Card.getActiveCards();
if (cards.isEmpty()) {
    showMessage("Cards unavailable");
    return view;
}

//some code here

swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
    @Override
    public void onRefresh() {
        refresh();
    }
});

...

正如当cardslist 为空时所写的那样，它返回view包含swipeRefreshLayout而没有refreshListener. 因此，当您刷新时，没有任何反应，因为没有listener.

解决方案只是listener在返回之前设置view，如下所示：

...

swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
    @Override
    public void onRefresh() {
        refresh();
    }
});

//some code here

cards = Card.getActiveCards();
if (cards.isEmpty()) {
    showMessage("Cards unavailable");
    return view;
}
...