Question

我想点击Recyclerview中的cardview(item)打开一项新活动。但我的新活动无法启动，应用程序已停止弹出

我的适配器类是

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>{

private List<Contacts> listitems;
private Context context;

public interface OnItemClickListener{
    void onItemClick(Contacts item);
}

public MyAdapter(List<Contacts> listitems, Context context) {
    this.listitems = listitems;
    this.context = context;
}

@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item,parent,false);
    return new ViewHolder(v);
}

@Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
    Contacts c = listitems.get(position);

    holder.t1.setText(c.getName());
    holder.t2.setText(c.getNumber());

}

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

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    public TextView t1,t2;
    public ImageView image;

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

        itemView.setOnClickListener(this);

        t1 = (TextView) itemView.findViewById(R.id.textview1);
        t2 = (TextView) itemView.findViewById(R.id.textview2);

    }

    @Override
    public void onClick(View v) {
        itemView.getContext().startActivity(new Intent(context,Details.class));
    }
}
}

Answer 1

只需替换

itemView.getContext().startActivity(new Intent(context,Details.class));

带

context.startActivity(new Intent(context,Details.class));

Answer 2

您正在使用回收站视图，然后您可以在活动中使用此功能，而不是在适配器

中

recyclerview.onaddOnItemTouchListener(new RecyclerItemClickListener(this, new RecyclerItemClickListener.OnItemClickListener() {
    @Override
    public void onItemClick(View view, int position) {
      Activity_name.startActivity(new Intent(context,Details.class));
    }
}));

新活动未启动（应用已停止）

2 个答案: