android - 将多个参数传递给 RecyclerView

Question

在我当前的代码中，我能够将一个值传递并显示到 RecyclerView。我不确定我遗漏了什么，或者我是否必须完全更改我的代码。

Here's my Adapter Class:

public class TechSkillsAdapter extends RecyclerView.Adapter<TrainingViewHolder> {

    Context c;
    ArrayList<String> trainings;

    public TechSkillsAdapter(Context c, ArrayList<String> trainings) {
        this.c = c;
        this.trainings = trainings;
    }

    @Override
    public TrainingViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(c).inflate(R.layout.cv_traininglist, parent, false);
        return new TrainingViewHolder(v);
    }

    @Override
    public void onBindViewHolder(TrainingViewHolder holder, int position) {
        holder.date_txt.setText(trainings.get(position));
    }

    @Override
    public int getItemCount() {
        return trainings.size();
    }

}

我正在使用 retrofit 检索列表，然后将值传递给一个方法，该方法将它们显示到 recyclerview。

Here's how I'm retrieving the trainings:

private void getTraining(final String id, String tid){
        com.trendmicro.projectlara.apis.ApiServiceTraining apiService = ApiClient.getClient().create(ApiServiceTraining.class);
        Call<List<Training>> call = apiService.getMyTraining(id, tid);
        call.enqueue(new Callback<List<Training>>() {
            @Override
            public void onResponse (Call<List<Training>> call, Response<List<Training>> response) {    
                List<Training> training = response.body();
                for(Training t: training){
                    fillTrainings(t.getTraining_title().toString(), t.getTraining_date().toString());
                }
            }

Here's my fillTrainings method.

我正在传递两个值，但我只能显示一个值:

private void fillTrainings(String title, String date) {
  training.add(title);

  adapter = new TechSkillsAdapter(getContext(), training);
  rv.setAdapter(adapter);
  progressDialog.dismiss();
}

这就是我要修复的问题，我也不确定如何显示日期，因为我添加值的方式是:training.add(title);

非常感谢任何帮助或提示。谢谢!

Answer 1

这是因为每次您有一个带有此代码的项目时，您都会重新创建适配器:

@Override
public void onResponse (Call<List<Training>> call, Response<List<Training>> response) {    
    List<Training> training = response.body();
    for(Training t: training){
        // here you're only send one time
        fillTrainings(t.getTraining_title().toString(), t.getTraining_date().toString());
    }
}

您可以通过将方法更改为此将所有列表发送到您的方法来修复它:

private void fillTrainings(List<Training> trainList) {
  for(Training train: trainList) {
    training.add(train.getTraining_title().toString());
  }

  adapter = new TechSkillsAdapter(getContext(), training);
  rv.setAdapter(adapter);
  progressDialog.dismiss();
}

然后你可以使用它:

@Override
public void onResponse (Call<List<Training>> call, Response<List<Training>> response) {    
  List<Training> training = response.body();
  fillTrainings(training);
}