Android——滑动监听RecyclerView线性流+左右划删除+上下移动

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Android——滑动监听RecyclerView线性流+左右划删除+上下移动

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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="c.example.jreduch10.Recycler1Activity">    <android.support.v7.widget.RecyclerView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/rv"        ></android.support.v7.widget.RecyclerView></RelativeLayout>

<span style="font-size:18px;">package c.example.jreduch10;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.helper.ItemTouchHelper;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;import c.example.jreduch10.entity.Video;import jp.wasabeef.recyclerview.adapters.AlphaInAnimationAdapter;import jp.wasabeef.recyclerview.adapters.ScaleInAnimationAdapter;public class Recycler1Activity extends AppCompatActivity {private RecyclerView rv;    private List<Video> list;    private      Adapter adapter;    private ItemTouchHelper itemTouchHelper;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_recycler1);        rv=(RecyclerView)findViewById(R.id.rv);        list=new ArrayList<>();        initData();      adapter=new Adapter(list);        LinearLayoutManager llm=new LinearLayoutManager(this);        llm.setOrientation(LinearLayoutManager.VERTICAL);        rv.setLayoutManager(llm);       // rv.setAdapter(adapter);        //动画效果        AlphaInAnimationAdapter alphaInAnimationAdapter=new AlphaInAnimationAdapter(adapter);        rv.setAdapter(new ScaleInAnimationAdapter(alphaInAnimationAdapter));        //默认动画效果       // rv.setItemAnimator(new DefaultItemAnimator());        itemTouchHelper=createItemTouchHelper();        itemTouchHelper.attachToRecyclerView(rv);////监听事件某一行//        RecyclerViewItemListener listener=new RecyclerViewItemListener(this, new RecyclerViewItemListener.OnItemClickListener() {//            @Override//            public void OnItemClick(View item, int adapterPosition) {//                Toast.makeText(getBaseContext(),adapterPosition+"",Toast.LENGTH_SHORT).show();//            }//        });//        rv.addOnItemTouchListener(listener);    }    public  ItemTouchHelper createItemTouchHelper(){        itemTouchHelper=new ItemTouchHelper(new ItemTouchHelper.Callback() {            @Override            public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {                //拖拽时支持的方向向上向下                int dragFlags=ItemTouchHelper.UP|itemTouchHelper.DOWN;                //滑动的时候支持的方向为左右                int swipeFlags=ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;                //必须调用makeMovementFlags（）方法通知 TouchHelper支持的种类                return makeMovementFlags(dragFlags,swipeFlags);            }//上下拖动回调次方法。            @Override            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {              adapter.move(viewHolder.getAdapterPosition(),target.getAdapterPosition());                return true;            }//左右滑动回调此方法。            @Override            public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {                adapter.delete(viewHolder.getAdapterPosition());            }            @Override            public boolean isItemViewSwipeEnabled() {                return super.isItemViewSwipeEnabled();            }            @Override            public boolean isLongPressDragEnabled() {                return super.isLongPressDragEnabled();            }        });        return  itemTouchHelper;    }    public  void initData(){        Video video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyfzyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyfzyfzyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.g,"国产","........");        list.add(video);        video=new Video(R.mipmap.ic_launcher,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyfzyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyfzyfzyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);        video=new Video(R.mipmap.g,"国产","........");        list.add(video);        video=new Video(R.mipmap.ic_launcher,"国产","........");        list.add(video);        video=new Video(R.mipmap.zyf,"国产","........");        list.add(video);    }    public  class  Adapter extends RecyclerView.Adapter<ViewHolder>{        private List<Video> mData;      public Adapter(List<Video> mData){          this.mData=mData;      }        //左右滑动时调用此方法        public  void  delete(int position){            mData.remove(position);            notifyItemRemoved(position);        }        //上下拖动时调用此方法        public  void move(int from,int to){            Video video=mData.remove(from);            mData.add(to>from?to-1:to,video);            notifyItemMoved(from,to);        }        @Override        public int getItemCount() {            return mData.size();        }        @Override        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {            View view=getLayoutInflater().inflate(R.layout.recycle1_linear_layout,parent,false);            ViewHolder vh=new ViewHolder(view);            return vh;        }        @Override        public void onBindViewHolder(ViewHolder holder, int position) {Video video=mData.get(position);            holder.iv.setImageResource(video.getImg());            holder.title.setText(video.getTitle());            holder.content.setText(video.getContent());        }    }    public  class  ViewHolder extends RecyclerView.ViewHolder{        ImageView iv;        TextView title;        TextView content;        public ViewHolder(View itemView) {            super(itemView);            iv= (ImageView) itemView.findViewById(R.id.iv);            title=(TextView)itemView.findViewById(R.id.title);            content=(TextView)itemView.findViewById(R.id.content);//监听事件某一项            itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    int position=getAdapterPosition();                    Log.d("9999999999","uuuuu");                    Toast.makeText(getBaseContext(),title.getText()+":"+position,Toast.LENGTH_SHORT).show();                }            });        }    }}</span>

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