仿QQ消息列表左滑弹出菜单，标记已读和删除

话不多说，看到这样的效果心动了么？

* -->特别注意extends后面Adapter里面要写自己定义的ViewHolder */ public class MsgRemindAdapter extends RecyclerView.Adapter implements ItemSlideHelper.Callback { private Context context; private List mDatas = new ArrayList(); private RecyclerView mRecyclerView; public MsgRemindAdapter(Context context, List mDatas) { this.context = context; this.mDatas = mDatas; } @Override public RemindViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()). inflate(R.layout.item_msg_remind, parent, false); return new RemindViewHolder(view); } /** * 将recyclerView绑定Slide事件 * * @param recyclerView */ @Override public void onAttachedToRecyclerView(RecyclerView recyclerView) { super.onAttachedToRecyclerView(recyclerView); mRecyclerView = recyclerView; mRecyclerView.addOnItemTouchListener(new ItemSlideHelper(mRecyclerView.getContext(), this)); } @Override public void onBindViewHolder(final RemindViewHolder holder, final int position) { /** * 消息状态 */ if (mDatas.get(position).isChecked()) { holder.msgRemindPoint.setBackgroundResource(R.drawable.shape_remind_point_gray); } else { holder.msgRemindPoint.setBackgroundResource(R.drawable.shape_remind_point_theme); } //消息标题 holder.tvRemindTitle.setText(mDatas.get(position).getTitle()); //消息内容 holder.tvRemindContent.setText(mDatas.get(position).getContent()); /** * -->特别注意，敲黑板了啊！！！在执行notify的时候，取position要取holder.getAdapterPosition()， * 消息被删除之后，他原来的position是final的，所以取到的值不准确，会报数组越界。 */ //消息主体监听，这里我是让他添加一条数据，替换成你需要的操作即可 holder.llMsgRemindMain.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { addData(mDatas.size()); } }); //标记已读监听 holder.tvMsgRemindCheck.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { mDatas.get(holder.getAdapterPosition()).setChecked(true); notifyItemChanged(holder.getAdapterPosition()); } }); //删除监听 holder.tvMsgRemindDelete.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { removeData(holder.getAdapterPosition()); } }); } @Override public int getItemCount() { return mDatas.size(); } /** * 此方法用来计算水平方向移动的距离 * * @param holder * @return */ @Override public int getHorizontalRange(RecyclerView.ViewHolder holder) { if (holder.itemView instanceof LinearLayout) { ViewGroup viewGroup = (ViewGroup) holder.itemView; //viewGroup包含3个控件，即消息主item、标记已读、删除，返回为标记已读宽度+删除宽度 return viewGroup.getChildAt(1).getLayoutParams().width + viewGroup.getChildAt(2).getLayoutParams().width; } return 0; } @Override public RecyclerView.ViewHolder getChildViewHolder(View childView) { return mRecyclerView.getChildViewHolder(childView); } @Override public View findTargetView(float x, float y) { return mRecyclerView.findChildViewUnder(x, y); } /** * 自定义的ViewHolder */ public class RemindViewHolder extends RecyclerView.ViewHolder { @InjectView(R.id.msg_remind_point) View msgRemindPoint; @InjectView(R.id.tv_remind_title) TextView tvRemindTitle; @InjectView(R.id.tv_remind_content) TextView tvRemindContent; @InjectView(R.id.ll_msg_remind_main) LinearLayout llMsgRemindMain; @InjectView(R.id.tv_msg_remind_check) TextView tvMsgRemindCheck; @InjectView(R.id.tv_msg_remind_delete) TextView tvMsgRemindDelete; public RemindViewHolder(View itemView) { super(itemView); ButterKnife.inject(this, itemView); } } /** * 添加单条数据 * * @param position */ public void addData(int position) { MsgVo vo = new MsgVo(); if (position % 2 == 1) { vo.setChecked(false); vo.setTitle("隔壁的二蛋"); vo.setContent("对方撤回了一条消息并砍了你的狗，问你服不服。"); } else { vo.setChecked(false); vo.setTitle("对面的三娃"); vo.setContent("今天晚上开黑，4缺1，来不来？"); } mDatas.add(position, vo); notifyItemInserted(position); } /** * 删除单条数据 * * @param position */ public void removeData(int position) { mDatas.remove(position); notifyItemRemoved(position); } } 4.要做这么高难度的滑动，是要一个ItemSlideHelper的： package com.simbaliu3.swiperecyclerlist; import android.animation.Animator; import android.animation.ObjectAnimator; import android.content.Context; import android.graphics.Rect; import android.support.v4.view.GestureDetectorCompat; import android.support.v4.view.MotionEventCompat; import android.support.v7.widget.RecyclerView; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; /** * 消息列表左滑菜单帮助类 */ public class ItemSlideHelper implements RecyclerView.OnItemTouchListener, GestureDetector.OnGestureListener { private final int DEFAULT_DURATION = 200; private View mTargetView; private int mActivePointerId; private int mTouchSlop; private int mMaxVelocity; private int mMinVelocity; private int mLastX; private int mLastY; private boolean mIsDragging; private Animator mExpandAndCollapseAnim; private GestureDetectorCompat mGestureDetector; private Callback mCallback; public ItemSlideHelper(Context context, Callback callback) { this.mCallback = callback; //手势用于处理fling mGestureDetector = new GestureDetectorCompat(context, this); ViewConfiguration configuration = ViewConfiguration.get(context); mTouchSlop = configuration.getScaledTouchSlop(); mMaxVelocity = configuration.getScaledMaximumFlingVelocity(); mMinVelocity = configuration.getScaledMinimumFlingVelocity(); } @Override public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) { int action = MotionEventCompat.getActionMasked(e); int x = (int) e.getX(); int y = (int) e.getY(); //如果RecyclerView滚动状态不是空闲targetView不是空 if (rv.getScrollState() != RecyclerView.SCROLL_STATE_IDLE) { if (mTargetView != null) { //隐藏已经打开 smoothHorizontalExpandOrCollapse(DEFAULT_DURATION / 2); mTargetView = null; } return false; } //如果正在运行动画 ，直接拦截什么都不做 if (mExpandAndCollapseAnim != null && mExpandAndCollapseAnim.isRunning()) { return true; } boolean needIntercept = false; switch (action) { case MotionEvent.ACTION_DOWN: mActivePointerId = MotionEventCompat.getPointerId(e, 0); mLastX = (int) e.getX(); mLastY = (int) e.getY(); /* * 如果之前有一个已经打开的项目，当此次点击事件没有发生在右侧的菜单中则返回TRUE， * 如果点击的是右侧菜单那么返回FALSE这样做的原因是因为菜单需要响应Onclick * */ if (mTargetView != null) { return !inView(x, y); } //查找需要显示菜单的view; mTargetView = mCallback.findTargetView(x, y); break; case MotionEvent.ACTION_MOVE: int deltaX = (x - mLastX); int deltaY = (y - mLastY); if (Math.abs(deltaY) > Math.abs(deltaX)) return false; //如果移动距离达到要求，则拦截 needIntercept = mIsDragging = mTargetView != null && Math.abs(deltaX) >= mTouchSlop; break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: /* * 走这是因为没有发生过拦截事件 * */ if (isExpanded()) { if (inView(x, y)) { // 如果走这那行这个ACTION_UP的事件会发生在右侧的菜单中 } else { //拦截事件,防止targetView执行onClick事件 needIntercept = true; } //折叠菜单 smoothHorizontalExpandOrCollapse(DEFAULT_DURATION / 2); } mTargetView = null; break; } return needIntercept; } private boolean isExpanded() { return mTargetView != null && mTargetView.getScrollX() == getHorizontalRange(); } private boolean isCollapsed() { return mTargetView != null && mTargetView.getScrollX() == 0; } /* * 根据targetView的scrollX计算出targetView的偏移，这样能够知道这个point * 是在右侧的菜单中 * */ private boolean inView(int x, int y) { if (mTargetView == null) return false; int scrollX = mTargetView.getScrollX(); int left = mTargetView.getWidth() - scrollX; int top = mTargetView.getTop(); int right = left + getHorizontalRange(); int bottom = mTargetView.getBottom(); Rect rect = new Rect(left, top, right, bottom); return rect.contains(x, y); } @Override public void onTouchEvent(RecyclerView rv, MotionEvent e) { if (mExpandAndCollapseAnim != null && mExpandAndCollapseAnim.isRunning() || mTargetView == null) return; //如果要响应fling事件设置将mIsDragging设为false if (mGestureDetector.onTouchEvent(e)) { mIsDragging = false; return; } int x = (int) e.getX(); int y = (int) e.getY(); int action = MotionEventCompat.getActionMasked(e); switch (action) { case MotionEvent.ACTION_DOWN: //RecyclerView 不会转发这个Down事件 break; case MotionEvent.ACTION_MOVE: int deltaX = (int) (mLastX - e.getX()); if (mIsDragging) { horizontalDrag(deltaX); } mLastX = x; break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: if (mIsDragging) { if (!smoothHorizontalExpandOrCollapse(0) && isCollapsed()) mTargetView = null; mIsDragging = false; } break; } } @Override public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) { } /** * 根据touch事件来滚动View的scrollX * * @param delta */ private void horizontalDrag(int delta) { int scrollX = mTargetView.getScrollX(); int scrollY = mTargetView.getScrollY(); if ((scrollX + delta) scrollRange / 2) { to = scrollRange; } } else { if (velocityX > 0) to = 0; else to = scrollRange; duration = (int) ((1.f - Math.abs(velocityX) / mMaxVelocity) * DEFAULT_DURATION); } if (to == scrollX) return false; mExpandAndCollapseAnim = ObjectAnimator.ofInt(mTargetView, "scrollX", to); mExpandAndCollapseAnim.setDuration(duration); mExpandAndCollapseAnim.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { } @Override public void onAnimationEnd(Animator animation) { mExpandAndCollapseAnim = null; if (isCollapsed()) mTargetView = null; } @Override public void onAnimationCancel(Animator animation) { //onAnimationEnd(animation); mExpandAndCollapseAnim = null; } @Override public void onAnimationRepeat(Animator animation) { } }); mExpandAndCollapseAnim.start(); return true; } public int getHorizontalRange() { RecyclerView.ViewHolder viewHolder = mCallback.getChildViewHolder(mTargetView); return mCallback.getHorizontalRange(viewHolder); } @Override public boolean onDown(MotionEvent e) { return false; } @Override public void onShowPress(MotionEvent e) { } @Override public boolean onSingleTapUp(MotionEvent e) { return false; } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { return false; } @Override public void onLongPress(MotionEvent e) { } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (Math.abs(velocityX) > mMinVelocity && Math.abs(velocityX) < mMaxVelocity) { if (!smoothHorizontalExpandOrCollapse(velocityX)) { if (isCollapsed()) mTargetView = null; return true; } } return false; } /** * 左滑菜单Callback */ public interface Callback { int getHorizontalRange(RecyclerView.ViewHolder holder); RecyclerView.ViewHolder getChildViewHolder(View childView); View findTargetView(float x, float y); } } 5.最后来Activity，布局文件中添加：

MsgRemindActivity：

是设置recyclerView的分割线，跟ListView有点点不一样哈。

好了，就这样多了吧，demo传上去了，还没审核通过，明天再弄吧。

《Android RecyclerView 使用完全解析 体验艺术般的控件》 http://blog.csdn.net/lmj623565791/article/details/45059587

http://blog.csdn.net/as_jon/article/details/51830504

http://download.csdn.net/detail/u013806766/9641654