在特定 RecyclerView CardView 项目中膨胀片段

Question

我有一个 RecyclerView，其中包含与用户活动目标相关的卡片。在每张卡片的一部分中，我想为不同的片段充气，例如目标 1 可能是饼图，而目标 2 可能是折线图。下面是我的代码，我遇到的问题是目前片段只在列表中的第一项中膨胀。

行布局

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tvLastSync"
        android:textSize="10dip"
        android:textColor="@android:color/darker_gray"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="Last updated: 12:00">
    </TextView>

    <!--
    <com.github.mikephil.charting.charts.PieChart
        android:id="@+id/today_pie_chart"
        android:layout_width="wrap_content"
        android:layout_height="250dp"
        android:layout_alignParentLeft="true"
        android:layout_marginTop="76dp"
        android:background="@android:color/transparent"
        android:layout_below="@+id/tvLastSync"/> -->

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/fragment_chart_container"
        android:layout_width="wrap_content"
        android:layout_height="250dp"
        android:layout_marginTop="76dp"
        android:background="@android:color/transparent"
        android:layout_below="@+id/tvLastSync"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tvDetails"
        android:textSize="30dip"
        android:textColor="@android:color/darker_gray"
        android:paddingTop="5dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="9999/10000">
    </TextView>

    <TextView
        android:layout_width="150dip"
        android:layout_height="wrap_content"
        android:id="@+id/tvInfo"
        android:textSize="20dip"
        android:textColor="@android:color/darker_gray"
        android:layout_alignParentRight="true"
        android:text="Some additional information"
        android:layout_below="@+id/tvDetails">
    </TextView>


</RelativeLayout>

Goal progress adapter
public class GoalProgressAdapter extends RecyclerView.Adapter<GoalProgressAdapter.ViewHolder> {

    private ArrayList<GoalStruct> goalList;
    private int rowLayout;
    private Context mContext;
    private LoadDataHelper loadDataHelper;

    public GoalProgressAdapter(ArrayList<GoalStruct> pGoalList, int pRowLayout, Context pContext){
        this.goalList = pGoalList;
        this.rowLayout = pRowLayout;
        this.mContext = pContext;
        this.loadDataHelper = new LoadDataHelper(mContext);
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(rowLayout, viewGroup, false);
        return new ViewHolder(v);
    }

    @Override
    public int getItemCount() {
        return goalList == null ? 0 : goalList.size();
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int i) {
        Goal g = goalList.get(i).goal;

        // todo populate info with some text based on progress - e.g. lets get started
        viewHolder.tvInfo.setText(" a motivational message ");

        // when the adapter has been bound load data related to goal
        loadDataHelper.getDataFromCache(false, g, viewHolder.tvLastSync, viewHolder.tvDetails, viewHolder.chartHolder);

    }

    public static class ViewHolder extends RecyclerView.ViewHolder{
        public TextView tvLastSync;
        public FrameLayout chartHolder;
        public  TextView tvDetails;
        public  TextView tvInfo;

        public ViewHolder(View itemView){
            super(itemView);
            tvLastSync = (TextView) itemView.findViewById(R.id.tvLastSync);
            chartHolder = (FrameLayout) itemView.findViewById(R.id.fragment_chart_container);
            tvDetails = (TextView) itemView.findViewById(R.id.tvDetails);
            tvInfo = (TextView) itemView.findViewById(R.id.tvInfo);
        }

    }



}

LoadDataHelper 的相关部分

FrameLayout fragmentContainer;    
    if (chartType == 1){
                // if using a pie chart
                 xVals.add("label 1");
                 xVals.add("label 2");
                 //yVals.add(new Entry(Float.parseFloat(goal.getTargetMeasurement()),0));
                 //yVals.add(new Entry(Float.parseFloat(es.value),1));
                 yVals.add(goal.getTargetMeasurement());
                 yVals.add(es.value);

                 Fragment_PieChart fpc = new Fragment_PieChart();
                 Bundle args = new Bundle();
                 args.putStringArrayList(Values.keyPieAxisLabels, xVals);
                 args.putStringArrayList(Values.keyPieAxisValues, yVals);
                 //args.putInt(Values.keyPieChart, fragmentContainer);
                 fpc.setArguments(args);

                 FragmentManager fm = ((Activity) mContext).getFragmentManager();
                 FragmentTransaction ft = fm.beginTransaction();
                 ft.add(fragmentContainer.getId(), fpc);
                 Log.d("LoadDataHelper: ", "Performing frag tran in " + fragmentContainer.getId());
                 ft.commit();

            }

Fragment_PieChart 的一部分

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View v = inflater.inflate(R.layout.fragment_pie_chart, container, false);
        Log.d("Test", "Inflating Fragment_PieChart");

        Bundle b = getArguments();
        xVals = b.getStringArrayList(Values.keyPieAxisLabels);
        yVals = b.getStringArrayList(Values.keyPieAxisValues);

        pc = (PieChart) v.findViewById(R.id.today_pie_chart);

        drawPieChart(xVals, yVals);

        return v;
    }

任何帮助将不胜感激:-)

Answer 1

考虑使用getItemViewType(int position) 或RecyclerView.Adapter。示例：How to create RecyclerView with multiple view type?。它对我有用。我希望这会有所帮助。

Answer 2

您需要使用 RecyclerView.Adapter 中提供的 getItemViewType() 方法。我为我找到了this 链接，它对我有很大帮助。