这篇文章给大家介绍使用RecyclerView怎么实现一个侧滑拖拽功能，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
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ItemDragListener
package slideslipdrag;
import android.support.v7.widget.RecyclerView;
public interface ItemDragListener {
/**
* 拖拽
*
* @param viewHolder viewHolder
*/
void onStartDrag(RecyclerView.ViewHolder viewHolder);
}ItemTouchHelperAdapter
package slideslipdrag;
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);
}ItemTouchHelperViewHolder
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);
}SimpleItemTouchHelperCallback
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;
}
}使用
布局
适配器
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 implements View.OnClickListener, View.OnLongClickListener, ItemTouchHelperAdapter {
private Context context;
private List 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 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);
}
}
}
主代码
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;
public class ParaConfigChooseGroundAdapter extends RecyclerView.Adapter implements View.OnClickListener, View.OnLongClickListener, ItemTouchHelperAdapter {
private Context context;
private List 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 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);
}
}
}
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文章标题：使用RecyclerView怎么实现一个侧滑拖拽功能
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