The horizontal scrolling effect is needed in the project. According to the previous ideas, I will write a ScrollView, add a LinearLayout inside, add controls in the code dynamically, and then delete or change colors dynamically. Now android has a new control RecyclerView, which can facilitate the realization of such functions. Please refer to this article for specific use methods: Android custom RecyclerView for real Gallery effect
The main problem is that I click an item, change the color, click other items, change the color, and the last time I clicked changed back to the original color. At the beginning of the implementation, I directly modified the control. When I found that the color would be disordered when sliding, so I added a list in the adapter to mark, and change the color of the control according to the mark
Corresponding adapter

public class AddDeviceAdapter extends RecyclerView.Adapter<AddDeviceAdapter.ViewHolder> /*implements View.OnClickListener*/{

    private OnItemClickListener mOnItemClickListener = null;

    private LayoutInflater mInflater;
    private List<AddDevice> mDatas;

    private AddDevice addDevice;
    private List<Boolean> isClicks;//Whether the control is clicked is false by default. If clicked, change the value. The control changes its color according to the value

    public AddDeviceAdapter(Context context, List<AddDevice> datas) {
        mInflater = LayoutInflater.from(context);
        mDatas = datas;
        isClicks = new ArrayList<>();
        for(int i = 0;i<mDatas.size();i++){
            isClicks.add(false);
        }
    }

    public void setDatas(List<AddDevice> datas) {
        mDatas = datas;
        L.e("AddDeviceAdapter's mDatas===" + new Gson().toJson(mDatas));
    }

    public void setOnItemClickLitener(OnItemClickListener mOnItemClickListener) {
        this.mOnItemClickListener = mOnItemClickListener;
    }

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

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = mInflater.inflate(R.layout.item_add_device, viewGroup, false);
        ViewHolder viewHolder = new ViewHolder(view);
        viewHolder.viewSpace = view.findViewById(R.id.viewSpace);
        viewHolder.ivAddDevice = (ImageView) view.findViewById(R.id.ivAddDevice);
        viewHolder.tvAddDevice = (TextView) view.findViewById(R.id.tvAddDevice);

        //Register the created View for click events
     //   view.setOnClickListener(this);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(final ViewHolder viewHolder, final int i) {
        addDevice = mDatas.get(i);
        viewHolder.ivAddDevice.setImageResource(addDevice.getResId());
        viewHolder.tvAddDevice.setText(addDevice.getItemText());
        //Save the data in the Tag of itemView so that it can be acquired when clicking
        viewHolder.itemView.setTag(viewHolder.tvAddDevice);
        if(isClicks.get(i)){
            viewHolder.tvAddDevice.setTextColor(Color.parseColor("#00a0e9"));
        }else{
            viewHolder.tvAddDevice.setTextColor(Color.parseColor("#ffffff"));
        }
//        if(addDevice.isFirst()) {
//            viewHolder.viewSpace.setVisibility(View.GONE);
//        }

        // If callback is set, click event is set
        if (mOnItemClickListener != null) {
           viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    for(int i = 0; i <isClicks.size();i++){
                        isClicks.set(i,false);
                    }
                    isClicks.set(i,true);
                     notifyDataSetChanged();
                    mOnItemClickListener.onItemClick(viewHolder.itemView,viewHolder.tvAddDevice, i);
               }
            });
        }
    }

   /* @Override
    public void onClick(View v) {
        if (mOnItemClickListener != null) {
            //Note that here we use the getTag method to get the data
            mOnItemClickListener.onItemClick(, textView,(int)v.getTag());
        }
    }*/

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public ViewHolder(View arg0) {
            super(arg0);
        }

        View viewSpace;
        ImageView ivAddDevice;
        TextView tvAddDevice;
    }

    public interface OnItemClickListener {
        void onItemClick(View view, TextView textView,int position);
    }
}