如何在另一个recyclerView中添加一个recyclerView

如何在另一个recyclerView中添加一个recyclerView

我想建议使用一个

RecyclerView

并动态填充你的列表项。我添加了一个github项目来描述如何做到这一点。你可能会看一下。我想建议一下，尽管其他解决方案也能很好地工作，但这是一种更快，更有效的方式来在中显示多个列表

RecyclerView

。

这个想法是在

onCreateViewHolder和onBindViewHolder

方法中添加逻辑，以便你可以为视图中的确切位置增加正确的视图

RecyclerView

。

我还添加了一个示例项目以及该Wiki。你可能会克隆并检查其功能。为了方便起见，我将发布使用的适配器。

public class DynamicListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    private static final int FOOTER_VIEW = 1;    private static final int FIRST_LIST_ITEM_VIEW = 2;    private static final int FIRST_LIST_HEADER_VIEW = 3;    private static final int SECOND_LIST_ITEM_VIEW = 4;    private static final int SECOND_LIST_HEADER_VIEW = 5;    private ArrayList<ListObject> firstList = new ArrayList<ListObject>();    private ArrayList<ListObject> secondList = new ArrayList<ListObject>();    public DynamicListAdapter() {    }    public void setFirstList(ArrayList<ListObject> firstList) {        this.firstList = firstList;    }    public void setSecondList(ArrayList<ListObject> secondList) {        this.secondList = secondList;    }    public class ViewHolder extends RecyclerView.ViewHolder {        // List items of first list        private TextView mTextDescription1;        private TextView mListItemTitle1;        // List items of second list        private TextView mTextDescription2;        private TextView mListItemTitle2;        // Element of footer view        private TextView footerTextView;        public ViewHolder(final View itemView) { super(itemView); // Get the view of the elements of first list mTextDescription1 = (TextView) itemView.findViewById(R.id.description1); mListItemTitle1 = (TextView) itemView.findViewById(R.id.title1); // Get the view of the elements of second list mTextDescription2 = (TextView) itemView.findViewById(R.id.description2); mListItemTitle2 = (TextView) itemView.findViewById(R.id.title2); // Get the view of the footer elements footerTextView = (TextView) itemView.findViewById(R.id.footer);        }        public void bindViewSecondList(int pos) { if (firstList == null) pos = pos - 1; else {     if (firstList.size() == 0) pos = pos - 1;     else pos = pos - firstList.size() - 2; } final String description = secondList.get(pos).getDescription(); final String title = secondList.get(pos).getTitle(); mTextDescription2.setText(description); mListItemTitle2.setText(title);        }        public void bindViewFirstList(int pos) { // Decrease pos by 1 as there is a header view now. pos = pos - 1; final String description = firstList.get(pos).getDescription(); final String title = firstList.get(pos).getTitle(); mTextDescription1.setText(description); mListItemTitle1.setText(title);        }        public void bindViewFooter(int pos) { footerTextView.setText("This is footer");        }    }    public class FooterViewHolder extends ViewHolder {        public FooterViewHolder(View itemView) { super(itemView);        }    }    private class FirstListHeaderViewHolder extends ViewHolder {        public FirstListHeaderViewHolder(View itemView) { super(itemView);        }    }    private class FirstListItemViewHolder extends ViewHolder {        public FirstListItemViewHolder(View itemView) { super(itemView);        }    }    private class SecondListHeaderViewHolder extends ViewHolder {        public SecondListHeaderViewHolder(View itemView) { super(itemView);        }    }    private class SecondListItemViewHolder extends ViewHolder {        public SecondListItemViewHolder(View itemView) { super(itemView);        }    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View v;        if (viewType == FOOTER_VIEW) { v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_footer, parent, false); FooterViewHolder vh = new FooterViewHolder(v); return vh;        } else if (viewType == FIRST_LIST_ITEM_VIEW) { v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_first_list, parent, false); FirstListItemViewHolder vh = new FirstListItemViewHolder(v); return vh;        } else if (viewType == FIRST_LIST_HEADER_VIEW) { v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_first_list_header, parent, false); FirstListHeaderViewHolder vh = new FirstListHeaderViewHolder(v); return vh;        } else if (viewType == SECOND_LIST_HEADER_VIEW) { v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_second_list_header, parent, false); SecondListHeaderViewHolder vh = new SecondListHeaderViewHolder(v); return vh;        } else { // SECOND_LIST_ITEM_VIEW v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_second_list, parent, false); SecondListItemViewHolder vh = new SecondListItemViewHolder(v); return vh;        }    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        try { if (holder instanceof SecondListItemViewHolder) {     SecondListItemViewHolder vh = (SecondListItemViewHolder) holder;     vh.bindViewSecondList(position); } else if (holder instanceof FirstListHeaderViewHolder) {     FirstListHeaderViewHolder vh = (FirstListHeaderViewHolder) holder; } else if (holder instanceof FirstListItemViewHolder) {     FirstListItemViewHolder vh = (FirstListItemViewHolder) holder;     vh.bindViewFirstList(position); } else if (holder instanceof SecondListHeaderViewHolder) {     SecondListHeaderViewHolder vh = (SecondListHeaderViewHolder) holder; } else if (holder instanceof FooterViewHolder) {     FooterViewHolder vh = (FooterViewHolder) holder;     vh.bindViewFooter(position); }        } catch (Exception e) { e.printStackTrace();        }    }    @Override    public int getItemCount() {        int firstListSize = 0;        int secondListSize = 0;        if (secondList == null && firstList == null) return 0;        if (secondList != null) secondListSize = secondList.size();        if (firstList != null) firstListSize = firstList.size();        if (secondListSize > 0 && firstListSize > 0) return 1 + firstListSize + 1 + secondListSize + 1;   // first list header, first list size, second list header , second list size, footer        else if (secondListSize > 0 && firstListSize == 0) return 1 + secondListSize + 1; // second list header, second list size, footer        else if (secondListSize == 0 && firstListSize > 0) return 1 + firstListSize;      // first list header , first list size        else return 0;    }    @Override    public int getItemViewType(int position) {        int firstListSize = 0;        int secondListSize = 0;        if (secondList == null && firstList == null) return super.getItemViewType(position);        if (secondList != null) secondListSize = secondList.size();        if (firstList != null) firstListSize = firstList.size();        if (secondListSize > 0 && firstListSize > 0) { if (position == 0) return FIRST_LIST_HEADER_VIEW; else if (position == firstListSize + 1)     return SECOND_LIST_HEADER_VIEW; else if (position == secondListSize + 1 + firstListSize + 1)     return FOOTER_VIEW; else if (position > firstListSize + 1)     return SECOND_LIST_ITEM_VIEW; else return FIRST_LIST_ITEM_VIEW;        } else if (secondListSize > 0 && firstListSize == 0) { if (position == 0) return SECOND_LIST_HEADER_VIEW; else if (position == secondListSize + 1) return FOOTER_VIEW; else return SECOND_LIST_ITEM_VIEW;        } else if (secondListSize == 0 && firstListSize > 0) { if (position == 0) return FIRST_LIST_HEADER_VIEW; else return FIRST_LIST_ITEM_VIEW;        }        return super.getItemViewType(position);    }}

还有另一种将项目保留在单个ArrayList对象中的方法，因此你可以设置标记项目的属性，以指示哪个项目来自第一个列表，哪个项目属于第二个列表。然后将其传递ArrayList给你RecyclerView，然后实现适配器内部的逻辑以动态填充它们。