RecyclerView：获取位置，并切换到活动 [英] RecyclerView : get position and switch to activity

问题描述

这怎么可能得到它被点击的回收视图行比作一个意图在onclick方法的活动项目的位置？ 这是我的适配器：

How is it possible to get the position of the item which was clicked in the recycler view row and than make a intent to an activity in the onClick method ? Here is my adapter:

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，我只是有一个onClick当图像中的一个被点击，但每幅图像具有相同的意向。

Here I just have an onClick when one of the images was clicked, but every image has the same intent.

推荐答案

您可以得到现在的位置是从ViewHolder通过为getPosition（）方法。就像下面code：

You can get postion from ViewHolder by getPosition() method. Like in code below:

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();
            ...

        }
    }
}

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