Question

我想从多个数组中引入recycler_item.xml信息阵列

newstitl.add（i，titl）;

newsdat.add（i，dat）;

newsbody.add（我，身体）;

定位在

<TextView
android:id="@+id/tv_recycler_item"
android:layout_width="wrap_content"
android:layout_height="match_parent"
/>

<TextView
android:id="@+id/tv_recycler_item1"
android:layout_width="wrap_content"
android:layout_height="match_parent"
/>

<TextView
android:id="@+id/tv_recycler_item2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
/>

在NewsFragment.java中

mRecyclerView = (RecyclerView) viiew.findViewById(R.id.my_recycler_view);
mRecyclerView.setHasFixedSize(true);

mLayoutManager = new LinearLayoutManager(mContext);
mRecyclerView.setLayoutManager(mLayoutManager);

mAdapter = new RecyclerAdapter(newstitl);
mRecyclerView.setAdapter(mAdapter);

有RecyclerAdapter.java

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {

    private ArrayList<String> mDataset;

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView;

        public ViewHolder(View v) {
            super(v);
            mTextView = (TextView) v.findViewById(R.id.tv_recycler_item);
        }
    }

    public RecyclerAdapter(ArrayList<String> dataset) {
        mDataset = dataset;
    }

    @Override
    public RecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.recycler_item, parent, false);

        ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {

        holder.mTextView.setText(mDataset.get(position));

    }

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

}

虽然我只能拿一个阵列 Here is a screenshot

Answer 1

您应该创建一个名为News的模型，其中包含日期，标题和正文。然后，您应该将List<News>传递给适配器而不是List<String>并根据需要操作数据。

Answer 2

很简单，你只需要对适配器进行一些调整。你需要的是一个接受3个ArrayList的适配器..

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ViewHolder> {

    private ArrayList<String> mDataset;
    private ArrayList<String> mDataset2;
    private ArrayList<String> mDataset3;

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public TextView mTextView, mTextView2, mTextView3 ;

        public ViewHolder(View v) {
            super(v);
            mTextView = (TextView) v.findViewById(R.id.tv_recycler_item);
            mTextView2 = (TextView) v.findViewById(R.id.tv_recycler_item1);
            mTextView3 = (TextView) v.findViewById(R.id.tv_recycler_item2);
        }
    }

    public RecyclerAdapter(ArrayList<String> dataset, ArrayList<String>dataset2, ArrayList<String>dataset3) {
        mDataset = dataset;
        mDataset2 = datset2;
        mDataset3 = dataset3;

    }

    @Override
    public RecyclerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.recycler_item, parent, false);

        ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {

        holder.mTextView.setText(mDataset.get(position));
        holder.mTextView1.setText(mDataset2.get(position));
        holder.mTextView.setText(mDataset3.get(position));    
    }

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

}

并调用NewsFragment中的3 ArrayList适配器构造函数，如下所示 -

mRecyclerView = (RecyclerView) viiew.findViewById(R.id.my_recycler_view);
mRecyclerView.setHasFixedSize(true);

mLayoutManager = new LinearLayoutManager(mContext);
mRecyclerView.setLayoutManager(mLayoutManager);

mAdapter = new RecyclerAdapter(newstitl,newsdat, newsbody);
mRecyclerView.setAdapter(mAdapter);

如何在Android Studio中的RecyclerAdapter中传递多个数组

2 个答案: