如何在回收站视图上添加 OnItemClick 侦听器

Question

我在片段中使用了一个 recycleView，我想向它添加 itemClickListener。这是我的代码：

我的适配器.java：

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

    private String[] mDataset;

    public static class MyViewHolder extends RecyclerView.ViewHolder{
        public CardView mCardView;
        public TextView mTextView;
        public MyViewHolder(View v){
            super(v);

            mCardView = (CardView) v.findViewById(R.id.card_view);
            mTextView = (TextView) v.findViewById(R.id.tv_text);

        }

    }

    public MyAdapter(String[] myDataset){
        mDataset = myDataset;
    }

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

    @Override
    public void onBindViewHolder(MyViewHolder holder, final int position){
        holder.mTextView.setText(mDataset[position]);
    }

    @Override
    public int getItemCount() { return mDataset.length; }

}

这是我在片段 Staf3Fragment.java 中调用它的时候

/**
 * A simple {@link Fragment} subclass.
 * Activities that contain this fragment must implement the
 * {@link Staf3Fragment.OnFragmentInteractionListener} interface
 * to handle interaction events.
 * Use the {@link Staf3Fragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class Staf3Fragment extends Fragment {

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    private OnFragmentInteractionListener mListener;

    public Staf3Fragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment Staf3Fragment.
     */
    // TODO: Rename and change types and number of parameters
    public static Staf3Fragment newInstance(String param1, String param2) {
        Staf3Fragment fragment = new Staf3Fragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }




    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_staf3, container, false);


        RecyclerView rv = (RecyclerView) view.findViewById(R.id.rv_recycler_view);
        rv.setHasFixedSize(true);
        MyAdapter adapter = new MyAdapter(new String[]{"Upacara Bendera", "Info Aplikasi"});
        rv.setAdapter(adapter);

        LinearLayoutManager llm = new LinearLayoutManager(getActivity());
        rv.setLayoutManager(llm);

        return view;
    }

    // TODO: Rename method, update argument and hook method into UI event
    public void onButtonPressed(Uri uri) {
        if (mListener != null) {
            mListener.onFragmentInteraction(uri);
        }
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnFragmentInteractionListener) {
            mListener = (OnFragmentInteractionListener) context;
        } else {
            //throw new RuntimeException(context.toString()
                    //+ " must implement OnFragmentInteractionListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    /**
     * This interface must be implemented by activities that contain this
     * fragment to allow an interaction in this fragment to be communicated
     * to the activity and potentially other fragments contained in that
     * activity.
     * <p>
     * See the Android Training lesson <a href=
     * "http://developer.android.com/training/basics/fragments/communicating.html"
     * >Communicating with Other Fragments</a> for more information.
     */
    public interface OnFragmentInteractionListener {
        // TODO: Update argument type and name
        void onFragmentInteraction(Uri uri);
    }
}

如何在项目上点击不同的用途，我的意思是当点击项目 1 时，它会转到另一个活动，如果项目 2 会转到另一个活动

请帮助我谢谢

================================================== ====================

card_item.xml

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="68dp" >

    <android.support.v7.widget.CardView
        android:id="@+id/card_view"
        xmlns:card_view="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_margin="10dp"
        android:layout_height="62dp"
        card_view:cardCornerRadius="4dp"
        card_view:elevation="14dp">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ImageView
                android:id="@+id/iv_image"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:layout_centerVertical="true"
                android:src="@drawable/abc_btn_radio_material"></ImageView>

            <TextView
                android:id="@+id/tv_text"

                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_toRightOf="@+id/iv_image"
                android:layout_marginLeft="10dp"
                android:layout_centerVertical="true"
                android:gravity="center"
                android:textSize="20dp"></TextView>

        </RelativeLayout>
    </android.support.v7.widget.CardView>

</RelativeLayout>

fragment_staf3.xml

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.network.poeja.belibis.Staf3Fragment">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </android.support.v7.widget.RecyclerView>
</FrameLayout>

Answer 1

创建一个像这样的自定义接口类

public interface ClickInterface {

    public void recyclerviewOnClick(int position);
}

在你的 Fragment 中实现它并初始化接口

YourFragment extends Fragment implements ClickInterface{

private ClickInterface listner;

------- Your oncreateView   --------
listner=this; //Now pass this in your adapter
    }

在您的适配器构造函数中，像这样获取此侦听器

public MyAdapter(String[] myDataset,ClickInterface listner){
        this.mDataset = myDataset;
        this.listner=listner;
    }

最后在你的 ViewHolder

public class MyViewHolder extends RecyclerView.ViewHolder{
        public CardView mCardView;
        public TextView mTextView;
        public MyViewHolder(View v){
            super(v);

            mCardView = (CardView) v.findViewById(R.id.card_view);
            mTextView = (TextView) v.findViewById(R.id.tv_text);

mTextView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {

                    listner.recyclerviewOnClick(getAdapterPosition());

                }
            });
        }
    }

现在您将获得片段中的位置

public void recyclerviewOnClick(int position){
// Here you will get the position
}