recycleview左滑删除仿QQ微信效果

首先对应的主布局

适配器子布局 layout_item

对应的三个backgound背景: res->drawable

white_background,pink_background ,orange_background

对应的适配器Adapet

public class Adapter extends RecyclerView.Adapter implements LeftSlideView.IonSlidingButtonListener {
    private Context mContext;

    private List mDatas = new ArrayList();

    private IonSlidingViewClickListener mIDeleteBtnClickListener;

    private IonSlidingViewClickListener mISetBtnClickListener;

    private LeftSlideView mMenu = null;


    public Adapter(Context context) {

        mContext = context;
        mIDeleteBtnClickListener = (IonSlidingViewClickListener) context;
        mISetBtnClickListener = (IonSlidingViewClickListener) context;

        for (int i = 0; i < 10; i++) {
            mDatas.add(i + "");
        }
    }

    @Override
    public int getItemCount() {
        return mDatas.size();
    }
    @Override
    public void onBindViewHolder(final MyViewHolder holder, int position) {

        holder.textView.setText(mDatas.get(position));

        //设置内容布局的宽为屏幕宽度
        holder.layout_content.getLayoutParams().width = Utils.getScreenWidth(mContext);

        //item正文点击事件
        holder.textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                //判断是否有删除菜单打开
                if (menuIsOpen()) {
                    closeMenu();//关闭菜单
                } else {
                    int n = holder.getLayoutPosition();
                    mIDeleteBtnClickListener.onItemClick(v, n);
                }

            }
        });


        //左滑设置点击事件
        holder.btn_Set.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int n = holder.getLayoutPosition();
                mISetBtnClickListener.onSetBtnCilck(view, n);
            }
        });


        //左滑删除点击事件
        holder.btn_Delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int n = holder.getLayoutPosition();
                mIDeleteBtnClickListener.onDeleteBtnCilck(view, n);

            }
        });

    }



    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup arg0, int arg1) {

        //获取自定义View的布局（加载item布局）
        View view = LayoutInflater.from(mContext).inflate(R.layout.layout_item, arg0, false);
        MyViewHolder holder = new MyViewHolder(view);

        return holder;
    }


    class MyViewHolder extends RecyclerView.ViewHolder {

        public TextView btn_Set;
        public TextView btn_Delete;
        public TextView textView;
        public ViewGroup layout_content;

        public MyViewHolder(View itemView) {
            super(itemView);

            btn_Set = (TextView) itemView.findViewById(R.id.tv_set);
            btn_Delete = (TextView) itemView.findViewById(R.id.tv_delete);
            textView = (TextView) itemView.findViewById(R.id.text);
            layout_content = (ViewGroup) itemView.findViewById(R.id.layout_content);

            ((LeftSlideView) itemView).setSlidingButtonListener(Adapter.this);
        }
    }


    /**
     * 删除item
     * @param position
     */
    public void removeData(int position) {
        mDatas.remove(position);
        notifyItemRemoved(position);
    }


    /**
     * 删除菜单打开信息接收
     */
    @Override
    public void onMenuIsOpen(View view) {
        mMenu = (LeftSlideView) view;
    }


    /**
     * 滑动或者点击了Item监听
     *
     * @param leftSlideView
     */
    @Override
    public void onDownOrMove(LeftSlideView leftSlideView) {
        if (menuIsOpen()) {
            if (mMenu != leftSlideView) {
                closeMenu();
            }
        }
    }

    /**
     * 关闭菜单
     */
    public void closeMenu() {
        mMenu.closeMenu();
        mMenu = null;

    }

    /**
     * 判断菜单是否打开
     *
     * @return
     */
    public Boolean menuIsOpen() {
        if (mMenu != null) {
            return true;
        }
        return false;
    }


    /**
     * 注册接口的方法：点击事件。在Mactivity.java实现这些方法。
     */
    public interface IonSlidingViewClickListener {
        void onItemClick(View view, int position);//点击item正文

        void onDeleteBtnCilck(View view, int position);//点击“删除”

        void onSetBtnCilck(View view, int position);//点击“设置”
    }

核心自定义view  => LeftSlideView 

/**
 * 自定义View,继承水平滚动条
 */
public class LeftSlideView extends HorizontalScrollView {

    private TextView mTextView_Set;//设置按钮

    private TextView mTextView_Delete;//删除按钮

    private int mScrollWidth;//记录滚动条可以滚动的距离

    private Boolean once = false;//在onMeasure中只执行一次的判断

    private Boolean isOpen = false;//记录按钮菜单是否打开，默认关闭false

    private IonSlidingButtonListener mIonSlidingButtonListener;//自定义的接口，用于传达滑动事件等


    /**
     * 1.构造方法
     */
    public LeftSlideView(Context context) {
        super(context, null);
    }

    public LeftSlideView(Context context, AttributeSet attrs) {
        super(context, attrs, 0);
    }

    public LeftSlideView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.setOverScrollMode(OVER_SCROLL_NEVER);
    }


    //2.在onMeasure中先取得作为“设置”、“删除”按钮的TextView
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        if (!once) {
            mTextView_Delete = (TextView) findViewById(R.id.tv_delete);
            mTextView_Set = (TextView) findViewById(R.id.tv_set);
            once = true;
        }
    }


    //3.在onLayout中使Item在每次变更布局大小时回到初始位置，并且获取滚动条的可移动距离
    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        if (changed) {
            this.scrollTo(0, 0);

            //获取水平滚动条可以滑动的范围，即右侧“设置”、“删除”按钮的总宽度
            mScrollWidth = mTextView_Delete.getWidth() + mTextView_Set.getWidth();
        }
    }


    //4.滑动监听，按滑动的距离大小控制菜单开关
    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        int action = ev.getAction();
        switch (action) {
            case MotionEvent.ACTION_DOWN://按下
            case MotionEvent.ACTION_MOVE://移动
                mIonSlidingButtonListener.onDownOrMove(this);
                break;
            case MotionEvent.ACTION_UP://松开
            case MotionEvent.ACTION_CANCEL:
                changeScrollx();
                return true;
            default:
                break;
        }
        return super.onTouchEvent(ev);
    }


    /**
     * 5.
     * @param l
     * @param t
     * @param oldl
     * @param oldt
     */
    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
        super.onScrollChanged(l, t, oldl, oldt);

        //改变view的在x轴方向的位置
        mTextView_Set.setTranslationX(1);
    }


    /**
     * 6.按滚动条被拖动距离判断关闭或打开菜单
     * getScrollX()                view的左上角相对于母视图的左上角的X轴偏移量
     * smoothScrollTo(x, y);        参数：相对于ScrollView左上角的位置来说，你要移动的位置
     */
    public void changeScrollx() {
        if (getScrollX() >= (mScrollWidth / 2)) {
            this.smoothScrollTo(mScrollWidth, 0);
            isOpen = true;
            mIonSlidingButtonListener.onMenuIsOpen(this);
        } else {
            this.smoothScrollTo(0, 0);
            isOpen = false;
        }
    }

    /**
     * 7.打开菜单
     */
    public void openMenu() {
        if (isOpen) {
            return;
        }
        this.smoothScrollTo(mScrollWidth, 0);//相对于原来没有滑动的位置x轴方向偏移了mScrollWidth，y轴方向没有变化。
        isOpen = true;
        mIonSlidingButtonListener.onMenuIsOpen(this);
    }

    /**
     * 8.关闭菜单
     */
    public void closeMenu() {
        if (!isOpen) {
            return;
        }
        this.smoothScrollTo(0, 0);//相对于原来没有滑动的位置,x轴方向、y轴方向都没有变化，即回到原来的位置了。
        isOpen = false;
    }


    /**
     * 9.接口定义及注册方法
     */
    public void setSlidingButtonListener(IonSlidingButtonListener listener) {
        mIonSlidingButtonListener = listener;
    }

    public interface IonSlidingButtonListener {

        //该方法在Adapter中实现
        void onMenuIsOpen(View view);//判断菜单是否打开
        void onDownOrMove(LeftSlideView leftSlideView);//滑动或者点击了Item监听
    }

对应的工具类

public class Utils {


    public static int dp2px(Context context, float dp)
    {
        return (int ) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics());
    }

    /**
     * 获得屏幕宽度
     *
     * @param context
     * @return
     */
    public static int getScreenWidth(Context context)
    {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE );
        DisplayMetrics outMetrics = new DisplayMetrics();
        wm.getDefaultDisplay().getMetrics( outMetrics);
        return outMetrics .widthPixels ;
    }
}

防止多个itme一起点击触发，创建一个主题

在AndroidManifest.xml对应的activity添加    （ android:theme="@style/AppThemes"）