RecyclerView:获取位置并切换到活动

Question

如何获取RecyclerView在行中单击的项目的位置,而不是在onClick方法中为活动创建意图？这是我的适配器:

public class SergejAdapter extends RecyclerView.Adapter<SergejAdapter.MyViewHolder>{

    private LayoutInflater inflater;
    List<Information> data= Collections.emptyList();

    public SergejAdapter(Context context, List<Information> data){
      inflater = LayoutInflater.from(context);
        this.data=data;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = inflater.inflate(R.layout.navigation_drawer_custom_row,parent,false);
        MyViewHolder holder= new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        Information current=data.get(position);
        holder.title.setText(current.title);
    }

    @Override
    public int getItemCount() {
        return data.size();
    }
    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
        TextView title;
        ImageView icon;

        public MyViewHolder(View itemView){
            super(itemView);
            title= (TextView) itemView.findViewById(R.id.listText);
            icon = (ImageView) itemView.findViewById(R.id.listIcon);
            icon.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            Context context = itemView.getContext();
            Intent intent = new Intent(context, Ernaehrung.class);
            context.startActivity(intent);

        }
    }

在这里,我只是onClick在点击其中一个图像时,但每个图像具有相同的意图.

Answer 1

您可以使用getAdapterPosition()方法从ViewHolder获取位置.如下面的代码:

public class SergejAdapter extends RecyclerView.Adapter<SergejAdapter.MyViewHolder>{

    ...

    class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{


        @Override
        public void onClick(View v) {
            // here you use position
            int position = getAdapterPosition();
            ...

        }
    }
}