Android RecyclerView 滑动删除例子

效果图

1.自定义Item容器View,SlidingButtonView.java

package com.android.mx.myapplication;import android.content.Context;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.widget.HorizontalScrollView;import android.widget.TextView;/** * Created by Administrator on 2016-11-11. */public class SlidingButtonView extends HorizontalScrollView {    private TextView mTextView_Delete;    private int mScrollWidth;    private IonSlidingButtonListener mIonSlidingButtonListener;    private Boolean isOpen = false;    private Boolean once = false;    public SlidingButtonView(Context context) {        this(context, null);    }    public SlidingButtonView(Context context, AttributeSet attrs) {        this(context, attrs,0);    }    public SlidingButtonView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        this.setOverScrollMode(OVER_SCROLL_NEVER);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);        if(!once){            mTextView_Delete = (TextView) findViewById(R.id.tv_delete);            once = true;        }    }    @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，即右侧按钮的宽度            mScrollWidth = mTextView_Delete.getWidth();            Log.i("asd", "mScrollWidth:" + mScrollWidth);        }    }    @Override    public boolean onTouchEvent(MotionEvent ev) {        int action = ev.getAction();        switch (action) {            case MotionEvent.ACTION_DOWN:            case MotionEvent.ACTION_MOVE:                mIonSlidingButtonListener.onDownOrMove(this);                break;            case MotionEvent.ACTION_UP:            case MotionEvent.ACTION_CANCEL:                changeScrollx();                return true;            default:                break;        }        return super.onTouchEvent(ev);    }    @Override    protected void onScrollChanged(int l, int t, int oldl, int oldt) {        super.onScrollChanged(l, t, oldl, oldt);        mTextView_Delete.setTranslationX(l - mScrollWidth);    }    /**     * 按滚动条被拖动距离判断关闭或打开菜单     */    public void changeScrollx(){        if(getScrollX() >= (mScrollWidth/2)){            this.smoothScrollTo(mScrollWidth, 0);            isOpen = true;            mIonSlidingButtonListener.onMenuIsOpen(this);        }else{            this.smoothScrollTo(0, 0);            isOpen = false;        }    }    /**     * 打开菜单     */    public void openMenu()    {        if (isOpen){            return;        }        this.smoothScrollTo(mScrollWidth, 0);        isOpen = true;        mIonSlidingButtonListener.onMenuIsOpen(this);    }    /**     * 关闭菜单     */    public void closeMenu()    {        if (!isOpen){            return;        }        this.smoothScrollTo(0, 0);        isOpen = false;    }    public void setSlidingButtonListener(IonSlidingButtonListener listener){        mIonSlidingButtonListener = listener;    }    public interface IonSlidingButtonListener{        void onMenuIsOpen(View view);        void onDownOrMove(SlidingButtonView slidingButtonView);    }}

2.定义每个Item的XML，layout_item.xml

<com.android.mx.myapplication.SlidingButtonView xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="100dp"    android:layout_marginBottom="1dp"    android:background="@android:color/white">    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="match_parent">        <TextView            android:id="@+id/tv_delete"            android:layout_width="160dp"            android:layout_height="match_parent"            android:layout_toRightOf="@+id/layout_content"            android:background="@drawable/btn_click_red_havebackground"            android:gravity="center"            android:text="删 除"            android:textColor="#DDFFFFFF" />        <RelativeLayout            android:id="@+id/layout_content"            android:layout_width="match_parent"            android:layout_height="match_parent">            <TextView                android:id="@+id/text"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:background="@drawable/btn_click_black_havebackground"                android:textColor="#DD000000"                android:textSize="50dp" />        </RelativeLayout>    </RelativeLayout></com.android.mx.myapplication.SlidingButtonView>

3定义Adapter，Adapter.java

package com.android.mx.myapplication;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import java.util.ArrayList;import java.util.List;/** * Created by Administrator on 2016-11-11. */public class Adapter extends RecyclerView.Adapter<Adapter.MyViewHolder> implements SlidingButtonView.IonSlidingButtonListener {    private Context mContext;    private IonSlidingViewClickListener mIDeleteBtnClickListener;    private List<String> mDatas = new ArrayList<String>();    private SlidingButtonView mMenu = null;    public Adapter(Context context) {        mContext = context;        mIDeleteBtnClickListener = (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);        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);                }            }        });        holder.btn_Delete.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                int n = holder.getLayoutPosition();                mIDeleteBtnClickListener.onDeleteBtnCilck(v, n);            }        });    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup arg0, int arg1) {        View view = LayoutInflater.from(mContext).inflate(R.layout.layout_item, arg0, false);        MyViewHolder holder = new MyViewHolder(view);        return holder;    }    public void addData(int position) {        mDatas.add(position, "添加项");        notifyItemInserted(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 = (SlidingButtonView) view;    }    /**     * 滑动或者点击了Item监听     *     * @param slidingButtonView     */    @Override    public void onDownOrMove(SlidingButtonView slidingButtonView) {        if (menuIsOpen()) {            if (mMenu != slidingButtonView) {                closeMenu();            }        }    }    /**     * 关闭菜单     */    public void closeMenu() {        mMenu.closeMenu();        mMenu = null;    }    /**     * 判断是否有菜单打开     */    public Boolean menuIsOpen() {        if (mMenu != null) {            return true;        }        return false;    }    public interface IonSlidingViewClickListener {        void onItemClick(View view, int position);        void onDeleteBtnCilck(View view, int position);    }    class MyViewHolder extends RecyclerView.ViewHolder {        public TextView btn_Delete;        public TextView textView;        public ViewGroup layout_content;        public MyViewHolder(View itemView) {            super(itemView);            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);            ((SlidingButtonView) itemView).setSlidingButtonListener(Adapter.this);        }    }}

4定义相关的Utils，Utils.java

package com.android.mx.myapplication;import android.content.Context;import android.util.DisplayMetrics;import android.view.WindowManager;public class Utils {    //屏幕宽度（像素）    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;    }}

5使用效果，MainActivity.java，activity_main.xml

MainActivity.java

package com.android.mx.myapplication;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.DefaultItemAnimator;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.util.Log;import android.view.View;public class MainActivity extends AppCompatActivity implements Adapter.IonSlidingViewClickListener {    private final String TAG = "test";    private RecyclerView mRecyclerView;    private Adapter mAdapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        setAdapter();    }    private void initView() {        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);    }    private void setAdapter() {        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));        mRecyclerView.setAdapter(mAdapter = new Adapter(this));        mRecyclerView.setItemAnimator(new DefaultItemAnimator());    }    @Override    public void onItemClick(View view, int position) {        Log.i(TAG, "点击项：" + position);    }    @Override    public void onDeleteBtnCilck(View view, int position) {        Log.i(TAG, "删除项：" + position);        mAdapter.removeData(position);    }}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.android.mx.myapplication.MainActivity">    <android.support.v7.widget.RecyclerView        android:id="@+id/recyclerview"        android:background="#EEEEEE"        android:scrollbars="vertical"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical"        android:overScrollMode="never"        /></RelativeLayout>

在build.gradle中应用

compile 'com.android.support:appcompat-v7:22.2.1'compile 'com.android.support:recyclerview-v7:22.2.1'