在 RecyclerView OnCreateViewHolder 中以编程方式创建或扩充视图

Question

基本上我想创建一个布局或使用 RecyclerView 以编程方式扩展布局，但无法这样做。我知道如何通过膨胀来处理 xml，但出于好奇，我想以编程方式进行。

我的适配器代码如下：

public class ACShare extends RecyclerView.Adapter<ACShare.VHShare>{

    private List<Integer> listDrawalbe;

    public ACShare(Context context) {
        TypedArray drawables = context.getResources().obtainTypedArray(R.array.s_array_contact_us_share);
        listDrawalbe=new ArrayList<>();
        for (int i = 0; i <  drawables.length(); ++i)
            listDrawalbe.add( drawables.getResourceId(i, -1));
    }

    @Override
    public VHShare onCreateViewHolder(ViewGroup parent, int viewType) {
        return new VHShare(LayoutInflater.from(parent.getContext()).inflate(-1,parent,false));
    }

    @Override
    public void onBindViewHolder(VHShare holder, int position) {
        holder.imageView.setImageResource(listDrawalbe.get(position));
    }


    public class VHShare extends RecyclerView.ViewHolder
    {
        public ImageView imageView;
        public LinearLayout ll;

        public VHShare(View itemView) {
            super(itemView);

            Context context= GeneralFunction.getActivity(itemView);


            ll = new LinearLayout(context);
            ll.setOrientation(android.widget.LinearLayout.VERTICAL);
            ll.setLayoutParams(new ViewGroup.LayoutParams(-1,-1));
            ll.setBackgroundColor(0x88ff0000);

            imageView = new ImageView(context);
            imageView.setLayoutParams(new ViewGroup.LayoutParams(-1,-2));
            imageView.setBackgroundColor(0x5500ff00);
            ll.addView(imageView);
        }
    }
}

我在 onCreateViewHolder 时不知道该怎么做。我搜索了 Whosebug 并找到了一些链接，但发现其中 none 个有用，其中一些如下：

dynamically add layout into getview method of adaptor in android

Answer 1

最后，在得到建议后，我得到了问题的解决方案，

    public class ACShare extends RecyclerView.Adapter<ACShare.VHShare>{

    private List<Integer> listDrawalbe;
    private ProcessedResult listener;

    public ACShare(Fragment context) {
        listener=(ProcessedResult)context;
        TypedArray drawables = context.getActivity().getResources().obtainTypedArray(R.array.s_array_contact_us_share);
        listDrawalbe=new ArrayList<>();
        for (int i = 0; i <  drawables.length(); ++i)
            listDrawalbe.add( drawables.getResourceId(i, -1));
        drawables.recycle();
    }

    @Override
    public VHShare onCreateViewHolder(ViewGroup parent, int viewType) {

        Context context= GeneralFunction.getActivity(parent);
        LinearLayout ll = new LinearLayout(context);
        RecyclerView.LayoutParams layoutParams=new RecyclerView.LayoutParams(RecyclerView.LayoutParams.WRAP_CONTENT,
                RecyclerView.LayoutParams.WRAP_CONTENT);
        ll.setLayoutParams(layoutParams);
        ll.setBackgroundColor(GeneralFunction.getColor(context,R.color.color_tranparent));

        return new VHShare(ll);
    }

    @Override
    public void onBindViewHolder(VHShare holder, int position) {
        holder.imageView.setImageResource(listDrawalbe.get(position));
    }

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

    class VHShare extends RecyclerView.ViewHolder implements View.OnClickListener
    {
        public ImageView imageView;

        VHShare(View itemView) {
            super(itemView);

            Context context= GeneralFunction.getActivity(itemView);

            imageView = new ImageView(context);
            LinearLayout.LayoutParams layoutParams=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                    LinearLayout.LayoutParams.WRAP_CONTENT);
            int padding= (int) context.getResources().getDimension(R.dimen.elevation_header);
            layoutParams.setMargins(padding,padding,padding,padding);
            imageView.setLayoutParams(layoutParams);

            imageView.setPadding(padding,padding,padding,padding);

            LinearLayout linearLayout=(LinearLayout)itemView;
            linearLayout.addView(imageView);

            itemView.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            listener.processedResult(getPosition(), CallBackConstants.MESSAGE);
        }
    }
}

在 RecyclerView OnCreateViewHolder 中以编程方式创建或扩充视图

Create or inflate views programmatically in a RecyclerView OnCreateViewHolder

android

layout-inflater

android-recyclerview