Question

您好我的片段中有recycleView

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_list_petrole, container, false);

    recyclerView = (RecyclerView)view.findViewById(R.id.recycle_view);
    allPetroles = getArguments().getParcelableArrayList("petroles");

    mLayoutManager = new LinearLayoutManager(getActivity());
    recyclerView.setLayoutManager(mLayoutManager);

    mAdapter = new RecyclerAdapter(allPetroles, getActivity());
    recyclerView.setAdapter(mAdapter);


    return view;
}

在RecycleView适配器中，我在onBindViewHolder中设置了OnClickListener，所以我需要在点击一些raw后发送回Fragment一些信息（位置），然后进行一些更改（将此信息重新发送给Activity并在Gmaps上添加一些新视图）这个onBindViewHolder：

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

    holder.linearClick.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            positionClick = position;
            notifyDataSetChanged();


--------------I NEED CODE HERE----------------------

        }
    });
    if (positionClick == position) {
        holder.linearClick.setSelected(true);
    }
    else {
        holder.linearClick.setSelected(false);
    }

我不明白我该怎么做

Answer 1

在RecyclerAdapter中：

1-添加内部接口：

/**********
 *
 *  Inner interface
 *
 */
public interface OnClickListener {
    void onItemClicked(Item item);
}

2-在构造函数中添加一个参数：

public RecyclerAdapter(Context context, List<Item> data, OnClickListener onClickListener) { 
    mContext = context;
    mData = data;
    mListener = onClickListener 
}

3-呼叫听众：

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
    holder.linearClick.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //positionClick = position;
            //you don't need this here : notifyDataSetChanged();
            mListener.onItemClicked(mData.get(position));
        }
    });
    if (positionClick == position) {
        holder.linearClick.setSelected(true);
    }
    else {
        holder.linearClick.setSelected(false);
    }

你的片段应该实现RecyclerAdapter.OnClickListener

public class YourFragment extends Fragment implements RecyclerAdapter.OnClickListener {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment_list_petrole, container, false);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        recyclerView = (RecyclerView)view.findViewById(R.id.recycle_view);
        allPetroles = getArguments().getParcelableArrayList("petroles");

        mLayoutManager = new LinearLayoutManager(getActivity());
        recyclerView.setLayoutManager(mLayoutManager);

        mAdapter = new RecyclerAdapter(getActivity(), allPetroles, this);
        recyclerView.setAdapter(mAdapter);
    }

    @Override
    void onItemClicked(Item item) {
        // TODO put your code here
    }
}

我在Fragment中获得RecycleView，然后在单击recycleview元素后，我需要将数据发送到此片段并重新启动它

1 个答案: