fragment在attach里面获取了传过来的集合如何刷新ui

在attach方法中获取到集合后，可以通过调用适配器的notifyDataSetChanged()方法来刷新UI。具体实现方式如下：

1.在attach方法中获取到集合：

@Override
public void onAttach(Context context) {
    super.onAttach(context);
    if (context instanceof MyListener) {
        myListener = (MyListener) context;
        list = myListener.getList();
    }
}

2.在适配器中调用notifyDataSetChanged()方法：

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

    private List<String> list;

    public MyAdapter(List<String> list) {
        this.list = list;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        //...
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        //...
    }

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

    public void refresh(List<String> list) {
        this.list = list;
        notifyDataSetChanged();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        //...
    }
}

3.在Activity或Fragment中调用适配器的refresh方法：

myAdapter.refresh(list);