public class ChannelActivity extends Activity {

  public RecyclerView rv;

  public List<DataBean> list = new ArrayList<>();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_channel);
    initData();
    initView();
  }

  private void initView() {

    rv = (RecyclerView) findViewById(R.id.rl_view);
    rv.setLayoutManager(new GridLayoutManager(this, 4));
    MyAdapter adapter = new MyAdapter(this, list);
    rv.setAdapter(adapter);
    //关联ItemTouchHelper
    ItemTouchHelper touchHelper = new ItemTouchHelper(new MyItemTouchCallBack(adapter));
    touchHelper.attachToRecyclerView(rv);

  }

  private void initData() {

    DataBean bean1 = new DataBean("体育", 0, "url");
    DataBean bean2 = new DataBean("新闻", 1, "url");
    DataBean bean3 = new DataBean("影视", 2, "url");
    DataBean bean4 = new DataBean("电视剧", 3, "url");
    DataBean bean5 = new DataBean("热点", 4, "url");
    DataBean bean6 = new DataBean("推荐", 5, "url");
    DataBean bean7 = new DataBean("屌丝男士", 6, "url");
    DataBean bean8 = new DataBean("音乐", 7, "url");
    DataBean bean9 = new DataBean("电影", 8, "url");

    list.add(bean1);
    list.add(bean2);
    list.add(bean3);
    list.add(bean4);
    list.add(bean5);
    list.add(bean6);
    list.add(bean7);
    list.add(bean8);
    list.add(bean9);
  }
}

public class MyItemTouchCallBack extends ItemTouchHelper.Callback {

  private TouchInterface touchInterface;

  public MyItemTouchCallBack(TouchInterface touchInterface) {
    this.touchInterface = touchInterface;
  }

  @Override
  public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
    //拖拽
    int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.RIGHT | ItemTouchHelper.LEFT;
    //滑出屏幕
    int swipeFlags = ItemTouchHelper.RIGHT | ItemTouchHelper.LEFT | ItemTouchHelper.UP | ItemTouchHelper.DOWN;
    return makeMovementFlags(dragFlags, 0);
  }

  @Override
  public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {

    int position_target = target.getLayoutPosition();
    int position = viewHolder.getLayoutPosition();
    //滑动事件回调到了Adapter，用来处理数据
    touchInterface.onMove(position, position_target);
    return true;
  }


  //标签动画持续时间，默认是250
  @Override
  public long getAnimationDuration(RecyclerView recyclerView, int animationType, float animateDx, float animateDy) {

    return super.getAnimationDuration(recyclerView, animationType, animateDx, animateDy);
  }


  /**
   * 是否可以长按拖拽，默认是true
   *
   * @return
   */
  @Override
  public boolean isLongPressDragEnabled() {
    return super.isLongPressDragEnabled();
  }

  /**
   * 标签划出去的回调，direction是滑动的方向
   *
   * @return
   */

  @Override
  public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
  }

}

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

  private Context context;
  //是否显示delete
  public boolean isShow;

  public List<DataBean> getList() {
    return list;
  }

  public void setList(List<DataBean> list) {
    this.list = list;
  }

  private List<DataBean> list;

  public MyAdapter(Context context, List<DataBean> list) {
    this.context = context;
    this.list = list;
  }

  @Override
  public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    MyViewHolder viewHolder = new MyViewHolder(LayoutInflater.from(context).inflate(R.layout.item_layout, parent, false));
    return viewHolder;
  }


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

    holder.tv_des.setText(list.get(position).name);
    holder.tv_des.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        DataBean bean = list.remove(position);
        notifyDataSetChanged();
        Toast.makeText(context,"删除了"+bean.name+"频道",Toast.LENGTH_SHORT).show();
      }
    });

    holder.tv_des.setOnLongClickListener(new View.OnLongClickListener() {
      @Override
      public boolean onLongClick(View v) {
        isShow = true;
        notifyDataSetChanged();
        return true;
      }
    });

    if (isShow) {
      holder.iv_icon.setVisibility(View.VISIBLE);
    } else {
      holder.iv_icon.setVisibility(View.GONE);
    }
  }

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

  @Override
  public void onMove(int currentPosition, int targetPosition) {

    Collections.swap(list, currentPosition, targetPosition);
    if (targetPosition < currentPosition) {
      List<DataBean> subList = list.subList(targetPosition + 1, currentPosition + 1);
      //向右移一位
      rightStepList(0, subList);
    } else {
      List<DataBean> subList = list.subList(currentPosition, targetPosition);
      //向左移一位
      leftStepList(0, subList);
    }
    notifyItemMoved(currentPosition, targetPosition);
  }
}

class MyViewHolder extends RecyclerView.ViewHolder {

  public ImageView iv_icon;
  public TextView tv_des;

  public MyViewHolder(View itemView) {
    super(itemView);
    iv_icon = (ImageView) itemView.findViewById(R.id.iv_icon);
    tv_des = (TextView) itemView.findViewById(R.id.tv_des);
  }
}

public class DataUtils {

  /**
   * 利用反转的思想对数据进行排序
   * 例如：list{0,1,2,3,4,5,6,7} 左移一位
   * 第一步:第一位先反转{0,1,2,3,4,5,6,7}
   * 第二部:剩下的在反转{0,7,6,5,4,3,2,1}
   * 第三步:全部反转{1,2,3,4,5,6,7,0}
   *
   * 例如：list{0,1,2,3,4,5,6,7} 右移一位
   * 第一步:最右边一位先反转{1,2,3,4,5,6,7}
   * 第二部:剩下的在反转{6,5,4,3,2,1,0,7}
   * 第三步:全部反转{7,6,5,4,3,2,1,0}
   *
   * 因为list的index是从0开始的，step要相应的-1
   * 优点:少创建对象，优化内存
   *
   * @param start
   * @param end
   * @param list
   */

  public static void reverseList(int start,int end,List list){

    int count = (end+1-start)/2 ;
    for(int i = 0;i< count;i++){
      Object temp = list.get(start+i);
      list.set(start+i,list.get(end-i));
      list.set(end-i,temp);
    }
  }
  public static void leftStepList(int step,List list){

    int size = list.size() -1;
    //左移
    reverseList(0,step,list);
    reverseList(step+1,size,list);
    reverseList(0,size,list);

  }

  public static void rightStepList(int step,List list){

    int size = list.size() -1;
    //右移
    reverseList(size-step,size,list);
    reverseList(0,size-step-1,list);
    reverseList(0,size,list);
  }
}

<?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:id="@+id/activity_channel"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context="com.iwintrue.channe.ChannelActivity">

  <android.support.v7.widget.RecyclerView
    android:id="@+id/rl_view"
    android:background="@color/white"
    android:layout_width="match_parent"
    android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  >

  <RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="10dp">
    <TextView
      android:id="@+id/tv_des"
      android:layout_width="80dp"
      android:layout_height="30dp"
      android:text="屌丝男士"
      android:gravity="center"
      android:background="@drawable/rl_shape"
      android:textColor="@color/textColor"
      android:layout_marginTop="5dp"
      android:layout_marginRight="5dp" />
    <ImageView
      android:layout_alignRight="@+id/tv_des"
      android:layout_marginRight="-5dp"
      android:id="@+id/iv_icon"
      android:layout_width="20dp"
      android:layout_height="20dp"
      android:src="@mipmap/delete"
      android:scaleType="fitXY"
      android:visibility="gone" />

  </RelativeLayout>
</LinearLayout>