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

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

</LinearLayout>

<?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="?android:listPreferredItemHeight"
  android:background="?selectableItemBackground">

  <ImageView
    android:id="@+id/iv_touch"
    style="@style/ItemStyle"
    android:layout_height="match_parent"
    android:layout_alignParentEnd="true"
    android:layout_alignParentRight="true"
    android:src="@android:drawable/alert_dark_frame" />

  <CheckBox
    android:id="@+id/cb_item_check"
    style="@style/ItemStyle"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

  <TextView
    android:id="@+id/tv_name"
    style="@style/ItemStyle"
    android:layout_toEndOf="@id/cb_item_check"
    android:layout_toRightOf="@id/cb_item_check" />

  <TextView
    android:id="@+id/tv_sex"
    style="@style/ItemStyle"
    android:layout_marginLeft="@dimen/dp_10"
    android:layout_marginStart="@dimen/dp_10"
    android:layout_toEndOf="@id/tv_name"
    android:layout_toRightOf="@id/tv_name" />

</RelativeLayout>

public class DefaultItemTouchHelper extends ItemTouchHelper {
  public DefaultItemTouchHelper(ItemTouchHelp.Callback callback) {
    super(callback);
  }
}

public class DefaultItemTouchHelpCallback extends ItemTouchHelper.Callback {

  /**
   * Item操作的回调
   */
  private OnItemTouchCallbackListener onItemTouchCallbackListener;

  /**
   * 是否可以拖拽
   */
  private boolean isCanDrag = false;
  /**
   * 是否可以被滑动
   */
  private boolean isCanSwipe = false;

  public DefaultItemTouchHelpCallback(OnItemTouchCallbackListener onItemTouchCallbackListener) {
    this.onItemTouchCallbackListener = onItemTouchCallbackListener;
  }

  /**
   * 设置Item操作的回调，去更新UI和数据源
   *
   * @param onItemTouchCallbackListener
   */
  public void setOnItemTouchCallbackListener(OnItemTouchCallbackListener onItemTouchCallbackListener) {
    this.onItemTouchCallbackListener = onItemTouchCallbackListener;
  }

  /**
   * 设置是否可以被拖拽
   *
   * @param canDrag 是true，否false
   */
  public void setDragEnable(boolean canDrag) {
    isCanDrag = canDrag;
  }

  /**
   * 设置是否可以被滑动
   *
   * @param canSwipe 是true，否false
   */
  public void setSwipeEnable(boolean canSwipe) {
    isCanSwipe = canSwipe;
  }

  /**
   * 当Item被长按的时候是否可以被拖拽
   *
   * @return
   */
  @Override
  public boolean isLongPressDragEnabled() {
    return isCanDrag;
  }

  /**
   * Item是否可以被滑动(H：左右滑动，V：上下滑动)
   *
   * @return
   */
  @Override
  public boolean isItemViewSwipeEnabled() {
    return isCanSwipe;
  }

  /**
   * 当用户拖拽或者滑动Item的时候需要我们告诉系统滑动或者拖拽的方向
   *
   * @param recyclerView
   * @param viewHolder
   * @return
   */
  @Override
  public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
    if (layoutManager instanceof GridLayoutManager) {// GridLayoutManager
      // flag如果值是0，相当于这个功能被关闭
      int dragFlag = ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT | ItemTouchHelper.UP | ItemTouchHelper.DOWN;
      int swipeFlag = 0;
      // create make
      return makeMovementFlags(dragFlag, swipeFlag);
    } else if (layoutManager instanceof LinearLayoutManager) {// linearLayoutManager
      LinearLayoutManager linearLayoutManager = (LinearLayoutManager) layoutManager;
      int orientation = linearLayoutManager.getOrientation();

      int dragFlag = 0;
      int swipeFlag = 0;

      // 为了方便理解，相当于分为横着的ListView和竖着的ListView
      if (orientation == LinearLayoutManager.HORIZONTAL) {// 如果是横向的布局
        swipeFlag = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
        dragFlag = ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;
      } else if (orientation == LinearLayoutManager.VERTICAL) {// 如果是竖向的布局，相当于ListView
        dragFlag = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
        swipeFlag = ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;
      }
      return makeMovementFlags(dragFlag, swipeFlag);
    }
    return 0;
  }

  /**
   * 当Item被拖拽的时候被回调
   *
   * @param recyclerView   recyclerView
   * @param srcViewHolder  拖拽的ViewHolder
   * @param targetViewHolder 目的地的viewHolder
   * @return
   */
  @Override
  public boolean onMove(RecyclerView recyclerView, ViewHolder srcViewHolder, ViewHolder targetViewHolder) {
    if (onItemTouchCallbackListener != null) {
      return onItemTouchCallbackListener.onMove(srcViewHolder.getAdapterPosition(), targetViewHolder.getAdapterPosition());
    }
    return false;
  }

  @Override
  public void onSwiped(ViewHolder viewHolder, int direction) {
    if (onItemTouchCallbackListener != null) {
      onItemTouchCallbackListener.onSwiped(viewHolder.getAdapterPosition());
    }
  }

  public interface OnItemTouchCallbackListener {
    /**
     * 当某个Item被滑动删除的时候
     *
     * @param adapterPosition item的position
     */
    void onSwiped(int adapterPosition);

    /**
     * 当两个Item位置互换的时候被回调
     *
     * @param srcPosition  拖拽的item的position
     * @param targetPosition 目的地的Item的position
     * @return 开发者处理了操作应该返回true，开发者没有处理就返回false
     */
    boolean onMove(int srcPosition, int targetPosition);
  }
}

/**
 * 是否可以长按拖拽排序。
 */
@Override
public boolean isLongPressDragEnabled() {}
/**
 * Item是否可以被滑动(H：左右滑动，V：上下滑动)
 */
@Override
public boolean isItemViewSwipeEnabled() {}
/**
 * 当用户拖拽或者滑动Item的时候需要我们告诉系统滑动或者拖拽的方向
 */
@Override
public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {}
/**
 * 当Item被拖拽的时候被回调
 */
@Override
public boolean onMove(RecyclerView r, ViewHolder rholer, ViewHolder tholder) {}

/**
 * 当View被滑动删除的时候
 */
@Override
public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {}

public class DefaultItemTouchHelper extends YolandaItemTouchHelper {

  private DefaultItemTouchHelpCallback itemTouchHelpCallback;

  public DefaultItemTouchHelper(DefaultItemTouchHelpCallback.OnItemTouchCallbackListener onItemTouchCallbackListener) {
    super(new DefaultItemTouchHelpCallback(onItemTouchCallbackListener));
    itemTouchHelpCallback = (DefaultItemTouchHelpCallback) getCallback();
  }

  /**
   * 设置是否可以被拖拽
   *
   * @param canDrag 是true，否false
   */
  public void setDragEnable(boolean canDrag) {
    itemTouchHelpCallback.setDragEnable(canDrag);
  }

  /**
   * 设置是否可以被滑动
   *
   * @param canSwipe 是true，否false
   */
  public void setSwipeEnable(boolean canSwipe) {
    itemTouchHelpCallback.setSwipeEnable(canSwipe);
  }
}

public class YolandaItemTouchHelper extends ItemTouchHelper {
  public YolandaItemTouchHelper(Callback callback) {
    super(callback);
  }

  public Callback getCallback() {
    return mCallback;
  }
}

DefaultItemTouchHelper itemTouchHelper = new DefaultItemTouchHelper(onItemTouchCallbackListener);
itemTouchHelper.attachToRecyclerView(recyclerView);
itemTouchHelper.setDragEnable(true);
itemTouchHelper.setSwipeEnable(true);

private DefaultItemTouchHelpCallback.OnItemTouchCallbackListener onItemTouchCallbackListener = new DefaultItemTouchHelpCallback.OnItemTouchCallbackListener() {
  @Override
  public void onSwiped(int adapterPosition) {
    // 滑动删除的时候，从数据源移除，并刷新这个Item。
    if (userInfoList != null) {
      userInfoList.remove(adapterPosition);
      mainAdapter.notifyItemRemoved(adapterPosition);
    }
  }

  @Override
  public boolean onMove(int srcPosition, int targetPosition) {
    if (userInfoList != null) {
      // 更换数据源中的数据Item的位置
      Collections.swap(userInfoList, srcPosition, targetPosition);
      // 更新UI中的Item的位置，主要是给用户看到交互效果
      mainAdapter.notifyItemMoved(srcPosition, targetPosition);
      return true;
    }
    return false;
  }
};