接口方法没有运行在fragment中接收数据

Question

我正在使用接口将对象列表从 activity 发送到片段。这是我的界面：

public interface CurrenciesSync {


void syncCurrencies(List<CurrencyModel> currencies);

}

下面是我调用接口方法设置数据的方式：

    public void getCurrencies(){

    APIInterface apiInterface = APIClient.getClient().create(APIInterface.class);
    Call<GetCurrenciesModel> call = apiInterface.getCurrencies();
    call.enqueue(new Callback<GetCurrenciesModel>() {
        @Override
        public void onResponse(Call<GetCurrenciesModel> call, Response<GetCurrenciesModel> response) {

            if(response.isSuccessful()) {

                if (response.body().getStatus() == true){
                    currencies = new ArrayList<CurrencyModel>();
                    for (int i = 0 ; i< response.body().getCurrencies().size(); i++){

                        currencies.add(response.body().getCurrencies().get(i));


                    }
                    new FeesFragment();
                    CurrenciesSync currenciesSync = new CurrenciesSync() {
                        @Override
                        public void syncCurrencies(List<CurrencyModel> currencies) {
                            // your code

                        }
                    };
                    currenciesSync.syncCurrencies(currencies);


                }


        }

        @Override
        public void onFailure(Call<GetCurrenciesModel> call, Throwable t){

        }
    });

}

这是我在片段中获取数据的方式：

    @Override
public void syncCurrencies(List<CurrencyModel> currencies) {
        List<FeeItemModel> currency = new ArrayList<>();
        for (int i= 0 ; i < currencies.size() ; i++){

            currency.add(
                    new FeeItemModel(
                            currencies.get(i).getSomething(),
                            currencies.get(i).getSomething(),
                            currencies.get(i).getSomething(),
                            currencies.get(i).getSomething(),
                            currencies.get(i).getSomething())
            );            }


                    CurrenciesAdaptor currenciesAdaptor = new CurrenciesAdaptor(getContext(),currency);
                    RecyclerView.setAdapter(currenciesAdaptor);
                    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
                    linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
                    RecyclerView.setLayoutManager(linearLayoutManager);
                    RecyclerView.setItemAnimator(new DefaultItemAnimator());

}

但下面的方法没有运行。注意：Fragment 也在 myActivity 的另一个地方创建，即使我尝试创建一个新的 fragment 实例以确保它正在创建，也没有任何变化。

Answer 1

似乎当通过接口对象在 activity class 中设置数据时，片段可能不会附加到 activity 。这似乎不是正确的可能是将数据从 activity 发送到 fragment ，因为这可能不是每次都如此。

To use the recommended method to send data from activity to fragment use this link:-

接口方法没有运行在fragment中接收数据

Interface method does not run in fragment to receive data

android

android-fragmentactivity