RecyclerView实现点击和长按事件的监听方法

爱被打了一巴掌 2022-07-15 00:53 231阅读 0赞

调用方法的activity：

public class RecyclerView_onclick extends AppCompatActivity {
        private RecyclerView mRecycler_view;
        private mAdapter_recycler_onclick mAdapter;
        private RecyclerView.LayoutManager mLayoutManager;
        private ItemData mItemData;
        private String[] setmTitle;
        private int[] setmImgID;
        private int[] setColorID;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.cardview);
            init_data();
            mItemData = new ItemData(setmTitle,setmImgID,setColorID);
            mRecycler_view = (RecyclerView) findViewById(R.id.my_recycler_view);
            //设置固定大小
            mRecycler_view.setHasFixedSize(false);
            //使用线性布局
            mLayoutManager = new LinearLayoutManager(this);
            mRecycler_view.setLayoutManager(mLayoutManager);
    
            //添加适配器
            mAdapter = new mAdapter_recycler_onclick(mItemData);
            mRecycler_view.setAdapter(mAdapter);
            //添加监听
            mAdapter.setOnClickListener(new mAdapter_recycler_onclick.MyOnClickListener() {
                @Override
                public void OnItemClickListener(View view, int position) {
                    Toast.makeText(RecyclerView_onclick.this,"你点击了"+position,Toast.LENGTH_SHORT).show();
                }
            });
            mAdapter.setOnLongClickListener(new mAdapter_recycler_onclick.MyOnLongClickListener() {
                @Override
                public void OnItemLongClickListener(View view, int position) {
                    Toast.makeText(RecyclerView_onclick.this,"你长按了"+position,Toast.LENGTH_SHORT).show();
                }
            });
    
        }
    //    //初始化数据
        private void init_data(){
            setmTitle = new String[5];
            setmImgID = new int[]{};
    
            for (int i = 0;i<5;i++){
                setmTitle[i] = "CardView Title "+i;
            }
        }
    
    }

添加点击和长按事件监听的RecyclerView的Adapter:

package com.example.cuboo.mlcircles.adapter;
    
    import android.support.v7.widget.RecyclerView;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.ImageView;
    import android.widget.LinearLayout;
    import android.widget.TextView;
    import com.example.cuboo.mlcircles.R;
    import com.example.cuboo.mlcircles.data.ItemData;
    
    /**
     * Created by cuboo on 2016/9/19.
     * recyclerview中的点击监听实现
     */
    public class mAdapter_recycler_onclick
            extends RecyclerView.Adapter <mAdapter_recycler_onclick.MyHolder>
            implements View.OnClickListener, View.OnLongClickListener {
        private ItemData mItemData;
        //接口回调步骤2：定义成员变量
        private MyOnClickListener myOnClickListener;
        private MyOnLongClickListener myOnLongClickListener;
    
       //构造器参数为自定义数据类
       public mAdapter_recycler_onclick(ItemData itemData){
            mItemData = itemData;
        }
    
        //自定义holder类为每一个数据项提供视图和在holder中为数据项提供数据
       public static class MyHolder extends RecyclerView.ViewHolder{
            private TextView mTitle;
            private ImageView mImage;
            private LinearLayout linearLayout;
    
            public MyHolder(View itemView) {
                super(itemView);
                //获得id
                mTitle = (TextView) itemView.findViewById(R.id.guide_text);
                mImage = (ImageView) itemView.findViewById(R.id.guide_icon);
               // linearLayout = (LinearLayout) itemView.findViewById(R.id.guide_ll);
            }
            public TextView getmTitle() {
                return mTitle;
            }
    
            public ImageView getmImage() {
                return mImage;
            }
    
            public LinearLayout getLinearLayout() {
                return linearLayout;
            }
        }
    
        @Override
        public MyHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
            //获得自定义布局文件id
            View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.img_text_circles,viewGroup,false);
            MyHolder vh = new MyHolder(view);
            //在onCreateViewHolder()中为每个item添加点击事件
            view.setOnClickListener(this);
            view.setOnLongClickListener(this);
            return vh;
        }
    
        @Override
        public void onBindViewHolder(MyHolder myHolder, int i) {
            //设置数据
                 String[] title = mItemData.getmTitle();
                 int[] imgid = mItemData.getmImgID();
                 int[] colorid = mItemData.getmColorID();
                 myHolder.getmTitle().setText(title[i]);
                 myHolder.getmImage().setImageResource(imgid[i]);
                 myHolder.getLinearLayout().setBackgroundResource(colorid[i]);
            //将数据保存在itemView的Id中，以便点击时进行获取
                myHolder.itemView.setId(i);
        }
    
        @Override
        public int getItemCount() {
            return mItemData.getCount();
    
        }
    
        //接口回调步骤1：定义监听接口类
        public static interface MyOnClickListener{
            public void OnItemClickListener(View view, int position);
        }
        public static interface MyOnLongClickListener{
            public void OnItemLongClickListener(View view, int position);
        }
    
        //接口回调步骤4：实现接口回调方法 将点击事件转移给外面的调用者
        @Override
        public void onClick(View view) {
            if (myOnClickListener != null){
                myOnClickListener.OnItemClickListener(view, view.getId());
            }
        }
        @Override
        public boolean onLongClick(View view) {
            if (myOnLongClickListener != null){
                myOnLongClickListener.OnItemLongClickListener(view,view.getId());
            }
            return true;
        }
        //接口回调步骤3：实例化 暴露给外面的调用者，定义Listener的方法（）
        public void setOnClickListener(MyOnClickListener listener){
            this.myOnClickListener = listener;
        }
        public void setOnLongClickListener(MyOnLongClickListener listener){
            this.myOnLongClickListener = listener;
        }
    }