RecyclerView实现侧滑拖拽功能

package slideslipdrag;import android.support.v7.widget.RecyclerView;/** * Created on 2018/7/22. * * @desc ItemDragListener */public interface ItemDragListener { /**  * 拖拽  *  * @param viewHolder viewHolder  */ void onStartDrag(RecyclerView.ViewHolder viewHolder);}

package slideslipdrag;/** * @decs: ItemTouchHelperAdapter * @date: 2018/7/22 13:23 * @version: v 1.0 */public interface ItemTouchHelperAdapter { /**  * 移动  *  * @param fromPosition 起始位  * @param toPosition 终止位  */ void onItemMove(int fromPosition, int toPosition); /**  * 侧滑结束  *  * @param position 位置  */ void onItemSlideSlipEnd(int position);}

package slideslipdrag;import android.content.Context;/** * @decs: ItemTouchHelperViewHolder * @date: 2018/7/22 13:24 * @version: v 1.0 */public interface ItemTouchHelperViewHolder {  /**   * 侧滑开始   *   * @param context 上下文   */  void onItemSlideSlipStart(Context context);  /**   * 侧滑停止   *   * @param context 上下文   */  void onItemSlideSlipStop(Context context);}

package slideslipdrag;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Paint;import android.support.v4.content.ContextCompat;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.helper.ItemTouchHelper;import android.view.View;import com.self.zsp.dfs.R;import util.DensityUtils;/** * @decs: SimpleItemTouchHelperCallback * @date: 2018/7/22 13:34 * @version: v 1.0 */public class SimpleItemTouchHelperCallback extends ItemTouchHelper.Callback {  private final ItemTouchHelperAdapter mAdapter;  private Context context;  private Paint paint = new Paint();  public SimpleItemTouchHelperCallback(ItemTouchHelperAdapter adapter, Context context) {    mAdapter = adapter;    this.context = context;  }  @Override  public boolean isLongPressDragEnabled() {    return false;  }  @Override  public boolean isItemViewSwipeEnabled() {    return true;  }  @Override  public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {    // Enable drag up and down and right swipe in right direction    final int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;    final int swipeFlags = ItemTouchHelper.END;    // final int swipeFlags = ItemTouchHelper.END | ItemTouchHelper.START; Enable swipe in both direction    return makeMovementFlags(dragFlags, swipeFlags);  }  @Override  public long getAnimationDuration(RecyclerView recyclerView, int animationType, float animateDx, float animateDy) {    // return animationType == ItemTouchHelper.ANIMATION_TYPE_DRAG ? DEFAULT_DRAG_ANIMATION_DURATION : DEFAULT_SWIPE_ANIMATION_DURATION;    return animationType == ItemTouchHelper.ANIMATION_TYPE_DRAG ? DEFAULT_DRAG_ANIMATION_DURATION : 350;  }  @Override  public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target) {    if (source.getItemViewType() != target.getItemViewType()) {      return false;    }    // Notify the adapter of the move    mAdapter.onItemMove(source.getAdapterPosition(), target.getAdapterPosition());    return true;  }  @Override  public void onChildDrawOver(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {    super.onChildDrawOver(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);  }  @Override  public void onSwiped(final RecyclerView.ViewHolder viewHolder, int i) {    // Notify the adapter of the dismissal    mAdapter.onItemSlideSlipEnd(viewHolder.getAdapterPosition());  }  @Override  public int getBoundingBoxMargin() {    return super.getBoundingBoxMargin();  }  @Override  public void onChildDraw(final Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {    super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);    // Fade out the view as it is swiped out of the parent's bounds    if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {      View itemView = viewHolder.itemView;      Bitmap icon;      if (dX > 0) {        icon = BitmapFactory.decodeResource(context.getResources(), R.drawable.delete);        // Set color for right swipe        paint.setColor(ContextCompat.getColor(context, R.color.red));        // Draw Rect with varying right side, equal to displacement dX        c.drawRect((float) itemView.getLeft() + DensityUtils.dpToPxFour(0), (float) itemView.getTop(), dX + DensityUtils.dpToPxFour(0),            (float) itemView.getBottom(), paint);        // Set the image icon for right swipe        c.drawBitmap(icon, (float) itemView.getLeft() + DensityUtils.dpToPxFour(16), (float) itemView.getTop() +            ((float) itemView.getBottom() - (float) itemView.getTop() - icon.getHeight()) / 2, paint);        icon.recycle();      }    }  }  @Override  public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {    if (actionState != ItemTouchHelper.ACTION_STATE_IDLE) {      // Let the view holder know that this item is being moved or dragged      ItemTouchHelperViewHolder itemViewHolder = (ItemTouchHelperViewHolder) viewHolder;      itemViewHolder.onItemSlideSlipStart(context);    }    super.onSelectedChanged(viewHolder, actionState);    /*final boolean swiping = actionState == ItemTouchHelper.ACTION_STATE_SWIPE;    swipeRefreshLayout.setEnabled(!swiping);*/  }  @Override  public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {    super.clearView(recyclerView, viewHolder);    // Tell the view holder it's time to restore the idle state    ItemTouchHelperViewHolder itemViewHolder = (ItemTouchHelperViewHolder) viewHolder;    itemViewHolder.onItemSlideSlipStop(context);  }  @Override  public float getMoveThreshold(RecyclerView.ViewHolder viewHolder) {    /*return super.getMoveThreshold(viewHolder);*/    return 0.1f;    /*return super.getMoveThreshold(0.5f);*/  }  @Override  public float getSwipeThreshold(RecyclerView.ViewHolder viewHolder) {    /*if (viewHolder instanceof RecyclerView.ViewHolder) {      return 1f;    }    return super.getSwipeThreshold(viewHolder);*/    return 0.9f;  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:id="@+id/llBasicConfigChoose"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:background="@drawable/white_gray_button_en_r_selector"  android:descendantFocusability="blocksDescendants"  android:orientation="vertical">  <RelativeLayout    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:paddingBottom="@dimen/d18"    android:paddingLeft="@dimen/d12"    android:paddingRight="@dimen/d12"    android:paddingTop="@dimen/d18">    <TextView      android:id="@+id/tvBasicConfigChoose"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_centerVertical="true"      android:textColor="@color/fontInput"      android:textSize="@dimen/s14"      tools:text="第一项目部" />    <ImageView      android:id="@+id/ivBasicConfigChoose"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_alignParentEnd="true"      android:layout_alignParentRight="true"      android:layout_centerVertical="true"      android:contentDescription="@string/toDo"      android:src="@drawable/dehaze"      android:visibility="invisible" />    <CheckBox      android:id="@+id/cbBasicConfigChoose"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:layout_alignParentEnd="true"      android:layout_alignParentRight="true"      android:layout_centerVertical="true"      android:button="@drawable/checkbox_image_selector" />  </RelativeLayout>  <View    android:layout_width="match_parent"    android:layout_height="@dimen/px1"    android:layout_marginLeft="@dimen/d12"    android:layout_marginStart="@dimen/d12"    android:background="@color/gray" /></LinearLayout>

package adapter.parameterconfiguration;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.PorterDuff;import android.support.annotation.NonNull;import android.support.v4.content.ContextCompat;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.self.zsp.dfs.R;import java.util.ArrayList;import java.util.Collections;import java.util.List;import entity.sync.Ground;import butterknife.BindView;import butterknife.ButterKnife;import slideslipdrag.ItemDragListener;import slideslipdrag.ItemTouchHelperAdapter;import slideslipdrag.ItemTouchHelperViewHolder;import util.ToastUtils;/** * Created on 2018/6/27. * * @desc 参数配置选择（地层） */public class ParaConfigChooseGroundAdapter extends RecyclerView.Adapter<ParaConfigChooseGroundAdapter.ViewHolder> implements View.OnClickListener, View.OnLongClickListener, ItemTouchHelperAdapter {  private Context context;  private List<Ground> groundList;  private int viewStateReceive;  private OnRecyclerViewItemClickListener mOnItemClickListener;  private OnRecyclerViewItemLongClickListener mOnItemLongClickListener;  private final ItemDragListener dragStartListener;  private int selectPosition = -1;  /**   * constructor   *   * @param context      上下文   * @param viewState     视图状（0选择1无选择）   * @param dragStartListener 拖拽监听   */  public ParaConfigChooseGroundAdapter(Context context, int viewState, ItemDragListener dragStartListener) {    this.context = context;    this.dragStartListener = dragStartListener;    groundList = new ArrayList<>();    viewStateReceive = viewState;  }  private void setSelectPosition(int selectPosition) {    this.selectPosition = selectPosition;  }  public void setParaConfigChooseGroundData(List<Ground> list) {    this.groundList = list;  }  @Override  public int getItemCount() {    if (groundList != null && groundList.size() > 0) {      return groundList.size();    }    return 0;  }  @Override  public void onClick(View v) {    if (mOnItemClickListener != null) {      // Method getTag which get data.      mOnItemClickListener.onItemClick(v, (Ground) v.getTag());    }  }  @Override  public boolean onLongClick(View v) {    if (mOnItemLongClickListener != null) {      // Method getTag which get data.      mOnItemLongClickListener.onItemLongClick(v, (Ground) v.getTag());    }    return true;  }  public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {    this.mOnItemClickListener = listener;  }  public void setOnItemLongClickListener(OnRecyclerViewItemLongClickListener listener) {    this.mOnItemLongClickListener = listener;  }  @NonNull  @Override  public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {    // inflate(R.layout.list_item_record,parent,false)不这么写则cardview不适宽    View view = LayoutInflater.from(context).inflate(R.layout.basic_config_choose_item, parent, false);    // 为所创View注册点击事件    view.setOnClickListener(this);    view.setOnLongClickListener(this);    return new ViewHolder(view);  }  @SuppressLint("ClickableViewAccessibility")  @Override  public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {    final Ground ground = groundList.get(position);    // 数据存itemView之Tag以便点获    holder.itemView.setTag(ground);    // 值    holder.tvBasicConfigChoose.setText(ground.getDcmc());    switch (viewStateReceive) {      case 0:        // 选否        if (selectPosition == position) {          holder.cbBasicConfigChoose.setChecked(true);        } else {          holder.cbBasicConfigChoose.setChecked(false);        }        // CheckBox        holder.cbBasicConfigChoose.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            if (selectPosition == holder.getAdapterPosition()) {              // 选则取消              setSelectPosition(-1);              mOnItemClickListener.onItemChoose(ground, false);            } else {              // 未选则选              setSelectPosition(holder.getAdapterPosition());              mOnItemClickListener.onItemChoose(ground, true);            }            notifyDataSetChanged();          }        });        // ConvertView        holder.itemView.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            if (selectPosition == holder.getAdapterPosition()) {              // 选则取消              setSelectPosition(-1);              mOnItemClickListener.onItemChoose(ground, false);            } else {              // 未选则选              setSelectPosition(holder.getAdapterPosition());              mOnItemClickListener.onItemChoose(ground, true);            }            notifyDataSetChanged();          }        });        break;      case 1:        holder.cbBasicConfigChoose.setVisibility(View.INVISIBLE);        holder.ivBasicConfigChoose.setVisibility(View.VISIBLE);        break;      default:        break;    }    holder.ivBasicConfigChoose.setOnTouchListener(new View.OnTouchListener() {      @Override      public boolean onTouch(View v, MotionEvent event) {        switch (event.getAction()) {          case MotionEvent.ACTION_DOWN:            dragStartListener.onStartDrag(holder);            break;          default:            break;        }        return false;      }    });  }  @Override  public void onItemMove(int fromPosition, int toPosition) {    if (fromPosition < toPosition) {      for (int i = fromPosition; i < toPosition; i++) {        Collections.swap(groundList, i, i + 1);      }    } else {      for (int i = fromPosition; i > toPosition; i--) {        Collections.swap(groundList, i, i - 1);      }    }    notifyItemMoved(fromPosition, toPosition);  }  @Override  public void onItemSlideSlipEnd(int position) {    Ground ground = groundList.get(position);    switch (ground.getLocalAdd()) {      case 1:        notifyItemRemoved(position);        groundList.remove(position);        notifyItemRangeChanged(0, getItemCount());        ground.delete();        break;      default:        notifyItemRangeChanged(0, getItemCount());        ToastUtils.shortShow(context.getString(R.string.localMaintainedDataDeleteHint));        break;    }  }  public interface OnRecyclerViewItemClickListener {    /**     * 短点     *     * @param view  视图     * @param ground 数据     */    void onItemClick(View view, Ground ground);    /**     * 短点（选）     *     * @param ground 数据     * @param choose 选否     */    void onItemChoose(Ground ground, boolean choose);  }  public interface OnRecyclerViewItemLongClickListener {    /**     * 长点     *     * @param view  视图     * @param ground 数据     */    void onItemLongClick(View view, Ground ground);  }  /**   * 自定ViewHolder（持每Item页全元素）   */  class ViewHolder extends RecyclerView.ViewHolder implements ItemTouchHelperViewHolder {    @BindView(R.id.llBasicConfigChoose)    LinearLayout llBasicConfigChoose;    @BindView(R.id.tvBasicConfigChoose)    TextView tvBasicConfigChoose;    @BindView(R.id.ivBasicConfigChoose)    ImageView ivBasicConfigChoose;    @BindView(R.id.cbBasicConfigChoose)    CheckBox cbBasicConfigChoose;    ViewHolder(final View view) {      super(view);      ButterKnife.bind(this, view);    }    @Override    public void onItemSlideSlipStart(Context context) {      llBasicConfigChoose.setBackgroundColor(ContextCompat.getColor(context, R.color.blue));      tvBasicConfigChoose.setTextColor(ContextCompat.getColor(context, R.color.background));      ivBasicConfigChoose.setColorFilter(ContextCompat.getColor(context, R.color.background), PorterDuff.Mode.SRC_IN);    }    @Override    public void onItemSlideSlipStop(Context context) {      llBasicConfigChoose.setBackgroundColor(ContextCompat.getColor(context, R.color.background));      tvBasicConfigChoose.setTextColor(ContextCompat.getColor(context, R.color.fontInput));      ivBasicConfigChoose.setColorFilter(ContextCompat.getColor(context, R.color.blue), PorterDuff.Mode.SRC_IN);    }  }}

package adapter.parameterconfiguration;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.PorterDuff;import android.support.annotation.NonNull;import android.support.v4.content.ContextCompat;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import com.self.zsp.dfs.R;import java.util.ArrayList;import java.util.Collections;import java.util.List;import entity.sync.Ground;import butterknife.BindView;import butterknife.ButterKnife;import slideslipdrag.ItemDragListener;import slideslipdrag.ItemTouchHelperAdapter;import slideslipdrag.ItemTouchHelperViewHolder;import util.ToastUtils;/** * Created on 2018/6/27. * * @author 郑少鹏 * @desc 参数配置选择（地层） */public class ParaConfigChooseGroundAdapter extends RecyclerView.Adapter<ParaConfigChooseGroundAdapter.ViewHolder> implements View.OnClickListener, View.OnLongClickListener, ItemTouchHelperAdapter {  private Context context;  private List<Ground> groundList;  private int viewStateReceive;  private OnRecyclerViewItemClickListener mOnItemClickListener;  private OnRecyclerViewItemLongClickListener mOnItemLongClickListener;  private final ItemDragListener dragStartListener;  private int selectPosition = -1;  /**   * constructor   *   * @param context      上下文   * @param viewState     视图状（0选择1无选择）   * @param dragStartListener 拖拽监听   */  public ParaConfigChooseGroundAdapter(Context context, int viewState, ItemDragListener dragStartListener) {    this.context = context;    this.dragStartListener = dragStartListener;    groundList = new ArrayList<>();    viewStateReceive = viewState;  }  private void setSelectPosition(int selectPosition) {    this.selectPosition = selectPosition;  }  public void setParaConfigChooseGroundData(List<Ground> list) {    this.groundList = list;  }  @Override  public int getItemCount() {    if (groundList != null && groundList.size() > 0) {      return groundList.size();    }    return 0;  }  @Override  public void onClick(View v) {    if (mOnItemClickListener != null) {      // Method getTag which get data.      mOnItemClickListener.onItemClick(v, (Ground) v.getTag());    }  }  @Override  public boolean onLongClick(View v) {    if (mOnItemLongClickListener != null) {      // Method getTag which get data.      mOnItemLongClickListener.onItemLongClick(v, (Ground) v.getTag());    }    return true;  }  public void setOnItemClickListener(OnRecyclerViewItemClickListener listener) {    this.mOnItemClickListener = listener;  }  public void setOnItemLongClickListener(OnRecyclerViewItemLongClickListener listener) {    this.mOnItemLongClickListener = listener;  }  @NonNull  @Override  public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {    // inflate(R.layout.list_item_record,parent,false)不这么写则cardview不适宽    View view = LayoutInflater.from(context).inflate(R.layout.basic_config_choose_item, parent, false);    // 为所创View注册点击事件    view.setOnClickListener(this);    view.setOnLongClickListener(this);    return new ViewHolder(view);  }  @SuppressLint("ClickableViewAccessibility")  @Override  public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {    final Ground ground = groundList.get(position);    // 数据存itemView之Tag以便点获    holder.itemView.setTag(ground);    // 值    holder.tvBasicConfigChoose.setText(ground.getDcmc());    switch (viewStateReceive) {      case 0:        // 选否        if (selectPosition == position) {          holder.cbBasicConfigChoose.setChecked(true);        } else {          holder.cbBasicConfigChoose.setChecked(false);        }        // CheckBox        holder.cbBasicConfigChoose.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            if (selectPosition == holder.getAdapterPosition()) {              // 选则取消              setSelectPosition(-1);              mOnItemClickListener.onItemChoose(ground, false);            } else {              // 未选则选              setSelectPosition(holder.getAdapterPosition());              mOnItemClickListener.onItemChoose(ground, true);            }            notifyDataSetChanged();          }        });        // ConvertView        holder.itemView.setOnClickListener(new View.OnClickListener() {          @Override          public void onClick(View v) {            if (selectPosition == holder.getAdapterPosition()) {              // 选则取消              setSelectPosition(-1);              mOnItemClickListener.onItemChoose(ground, false);            } else {              // 未选则选              setSelectPosition(holder.getAdapterPosition());              mOnItemClickListener.onItemChoose(ground, true);            }            notifyDataSetChanged();          }        });        break;      case 1:        holder.cbBasicConfigChoose.setVisibility(View.INVISIBLE);        holder.ivBasicConfigChoose.setVisibility(View.VISIBLE);        break;      default:        break;    }    holder.ivBasicConfigChoose.setOnTouchListener(new View.OnTouchListener() {      @Override      public boolean onTouch(View v, MotionEvent event) {        switch (event.getAction()) {          case MotionEvent.ACTION_DOWN:            dragStartListener.onStartDrag(holder);            break;          default:            break;        }        return false;      }    });  }  @Override  public void onItemMove(int fromPosition, int toPosition) {    if (fromPosition < toPosition) {      for (int i = fromPosition; i < toPosition; i++) {        Collections.swap(groundList, i, i + 1);      }    } else {      for (int i = fromPosition; i > toPosition; i--) {        Collections.swap(groundList, i, i - 1);      }    }    notifyItemMoved(fromPosition, toPosition);  }  @Override  public void onItemSlideSlipEnd(int position) {    Ground ground = groundList.get(position);    switch (ground.getLocalAdd()) {      case 1:        notifyItemRemoved(position);        groundList.remove(position);        notifyItemRangeChanged(0, getItemCount());        ground.delete();        break;      default:        notifyItemRangeChanged(0, getItemCount());        ToastUtils.shortShow(context.getString(R.string.localMaintainedDataDeleteHint));        break;    }  }  public interface OnRecyclerViewItemClickListener {    /**     * 短点     *     * @param view  视图     * @param ground 数据     */    void onItemClick(View view, Ground ground);    /**     * 短点（选）     *     * @param ground 数据     * @param choose 选否     */    void onItemChoose(Ground ground, boolean choose);  }  public interface OnRecyclerViewItemLongClickListener {    /**     * 长点     *     * @param view  视图     * @param ground 数据     */    void onItemLongClick(View view, Ground ground);  }  /**   * 自定ViewHolder（持每Item页全元素）   */  class ViewHolder extends RecyclerView.ViewHolder implements ItemTouchHelperViewHolder {    @BindView(R.id.llBasicConfigChoose)    LinearLayout llBasicConfigChoose;    @BindView(R.id.tvBasicConfigChoose)    TextView tvBasicConfigChoose;    @BindView(R.id.ivBasicConfigChoose)    ImageView ivBasicConfigChoose;    @BindView(R.id.cbBasicConfigChoose)    CheckBox cbBasicConfigChoose;    ViewHolder(final View view) {      super(view);      ButterKnife.bind(this, view);    }    @Override    public void onItemSlideSlipStart(Context context) {      llBasicConfigChoose.setBackgroundColor(ContextCompat.getColor(context, R.color.blue));      tvBasicConfigChoose.setTextColor(ContextCompat.getColor(context, R.color.background));      ivBasicConfigChoose.setColorFilter(ContextCompat.getColor(context, R.color.background), PorterDuff.Mode.SRC_IN);    }    @Override    public void onItemSlideSlipStop(Context context) {      llBasicConfigChoose.setBackgroundColor(ContextCompat.getColor(context, R.color.background));      tvBasicConfigChoose.setTextColor(ContextCompat.getColor(context, R.color.fontInput));      ivBasicConfigChoose.setColorFilter(ContextCompat.getColor(context, R.color.blue), PorterDuff.Mode.SRC_IN);    }  }}