滚动RecyclerView也会更改其他数据

我正在使用RecyclerView来显示项目列表.我有两个TextViews一个在另一个下面.最初将第二个TextView设置为singleline = true.现在单击项目时,我将singleline = false设置为.只需点击一下即可展开它(如ExpandableList).该代码可以正常工作,但是问题在于,随着RecyclerView使用回收项目,其他项目TextView值也被设置为singleline = false.现在如何避免这种情况？

码

public class InboxAdapter extends RecyclerView.Adapter<InboxAdapter.InboxViewHolder> {

    private Context context;
    private List<InboxModel> listInbox;
    private InboxModel currentItem;

    public InboxAdapter(Context context, List<InboxModel> listInbox) {
        this.context = context;
        this.listInbox = listInbox;
    }

    @Override
    public InboxViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.custom_inbox_item, parent, false);
        InboxViewHolder viewHolder = new InboxViewHolder(view);
        return viewHolder;
    }

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

        currentItem = listInbox.get(position);
        holder.tvHeader.setText(currentItem.header);
        holder.tvMsg.setText(currentItem.msg);

        holder.tvHeader.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                holder.tvMsg.setSingleLine(false);
                LinearLayout.LayoutParams lp= (LinearLayout.LayoutParams) holder.tvMsg.getLayoutParams();
                lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
                holder.tvMsg.setLayoutParams(lp);

            }
        });

    }

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

    class InboxViewHolder extends RecyclerView.ViewHolder {

        private TextView tvImageHeader;
        private TextView tvHeader;
        private TextView tvMsg;
        private TextView tvDate;


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

            tvImageHeader = (TextView) itemView.findViewById(R.id.tv_img_header);
            tvHeader = (TextView) itemView.findViewById(R.id.tv_header);
            tvMsg = (TextView) itemView.findViewById(R.id.tv_msg);
            tvDate = (TextView) itemView.findViewById(R.id.tv_date);
        }
    }

解决方法:

嗯,为此,您必须保存单击位置并在onBindViewHolder()中写入条件,如下所示

@Override
        public void onBindViewHolder(final InboxViewHolder holder, int position) {
    if(Postion==Mysavedposition){
      holder.tvMsg.setSingleLine(false);
    }else{
      holder.tvMsg.setSingleLine(true);
    }
            currentItem = listInbox.get(position);
            holder.tvHeader.setText(currentItem.header);
            holder.tvMsg.setText(currentItem.msg);

            holder.tvHeader.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
    Mysavedposition=position;
                    holder.tvMsg.setSingleLine(false);
                    LinearLayout.LayoutParams lp= (LinearLayout.LayoutParams) holder.tvMsg.getLayoutParams();
                    lp=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
                    holder.tvMsg.setLayoutParams(lp);

                }
            });

        }

标签：android-recyclerview,android
来源： https://codeday.me/bug/20191119/2034942.html