RecyclerView 多选 删除

效果如图，多选框默认隐藏，长按显示。  本例加入了第三方库

material-cab 

就是长按后toolbar弹出的菜单。

首先定义布局activity_main.xml，主要是 RecyclerView

<?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"    tools:context="com.example.gao.myobser.MainActivity">    <FrameLayout        android:id="@+id/frame"        android:layout_width="match_parent"        android:layout_height="48dp">        <android.support.v7.widget.Toolbar            android:id="@+id/toolbar"            android:layout_width="match_parent"            android:layout_height="48dp"            android:layout_alignParentTop="true"            android:background="@color/colorPrimary">        </android.support.v7.widget.Toolbar>        <ViewStub            android:id="@+id/cab_stub"            android:layout_width="match_parent"            android:layout_height="48dp" />    </FrameLayout>    <android.support.v7.widget.RecyclerView        android:id="@+id/recycler"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_below="@id/frame"/></RelativeLayout>

item布局，

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/item_root"    android:orientation="horizontal"    android:background="@drawable/list_selector"    android:layout_width="match_parent"    android:layout_height="32dp">    <CheckBox        android:id="@+id/item_checkbox"        android:layout_width="wrap_content"        android:layout_height="match_parent" />    <TextView        android:id="@+id/item_text"        android:layout_width="wrap_content"        android:layout_height="match_parent" /></LinearLayout>

adapter文件

isShow判断checkbox是否显示，两个list，一个用来传数据，另一个用来判断该位置的checkbox是否被选中。

public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.PlateViewHolder> {    private List<String> list;    private List<Boolean> listCheck;    private Context context;    boolean isShow=false;    public RecyclerAdapter(List<String> list, Context context, List<Boolean> listCheck){        this.list=list;        this.context=context;        this.listCheck=listCheck;    }    @Override    public PlateViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view= LayoutInflater.from(context).inflate(R.layout.item,parent,false);        return new PlateViewHolder(view);    }    @Override    public void onBindViewHolder(PlateViewHolder holder, int position) {        holder.position=position;        holder.textView.setText(position+"");        holder.checkBox.setChecked(listCheck.get(position));        if(isShow){            holder.checkBox.setVisibility(View.VISIBLE);        }else {            holder.checkBox.setVisibility(View.GONE);        }    }    @Override    public int getItemCount() {        return list.size();    }    public class PlateViewHolder extends RecyclerView.ViewHolder implements View.OnLongClickListener,View.OnClickListener,CompoundButton.OnCheckedChangeListener{        private TextView textView;        private CheckBox checkBox;        private LinearLayout rootView;        private int position;        public PlateViewHolder(View itemView) {            super(itemView);            rootView= (LinearLayout) itemView.findViewById(R.id.item_root);            textView= (TextView) itemView.findViewById(R.id.item_text);            checkBox= (CheckBox) itemView.findViewById(R.id.item_checkbox);            checkBox.setOnCheckedChangeListener(this);            rootView.setOnClickListener(this);            rootView.setOnLongClickListener(this);        }        @Override        public boolean onLongClick(View v) {            if(onItemClickListener!=null){                return onItemClickListener.setOnItemLongClick(position);            }            return false;        }        @Override        public void onClick(View v) {            if(onItemClickListener!=null){                if(checkBox.isChecked()){                    checkBox.setChecked(false);                    onItemClickListener.setOnItemClick(position,false);                }else {                    checkBox.setChecked(true);                    onItemClickListener.setOnItemClick(position,true);                }            }        }        @Override        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {            if(onItemClickListener!=null){                onItemClickListener.setOnItemCheckedChanged(position,isChecked);            }        }    }    public interface OnItemClickListener {        void setOnItemClick(int position, boolean isCheck);        boolean setOnItemLongClick(int position);        void setOnItemCheckedChanged(int position, boolean isCheck);    }    private OnItemClickListener onItemClickListener;    public void setOnItemListener(OnItemClickListener onItemClickListener){        this.onItemClickListener=onItemClickListener;    }}

MainActivity 文件

public class MainActivity extends AppCompatActivity implements MaterialCab.Callback {    private RecyclerView recyclerView;    private List<Boolean> listCheck;    private MaterialCab mCab;    RecyclerAdapter adapter;    private List<String> list;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = (RecyclerView) findViewById(R.id.recycler);        recyclerView.setLayoutManager(new LinearLayoutManager(this));        recyclerView.setItemAnimator(new SlideInOutRightItemAnimator(recyclerView));        recyclerView.addItemDecoration(new RecycleViewDivider(this, LinearLayoutManager.HORIZONTAL));        recyclerView.setHasFixedSize(true);        list = new ArrayList<>();        listCheck = new ArrayList<>();//list listCheck 赋值 for (int i = 0; i < 40; i++) {            list.add(i + "");            listCheck.add(false);        }        adapter = new RecyclerAdapter(list, this, listCheck);        recyclerView.setAdapter(adapter);        adapter.setOnItemListener(new RecyclerAdapter.OnItemClickListener() {            @Override            public void setOnItemClick(int position, boolean isCheck) {                listCheck.set(position, isCheck);            }            @Override            public boolean setOnItemLongClick(int position) {                if (mCab == null)                    mCab = new MaterialCab(MainActivity.this, R.id.cab_stub).setMenu(R.menu.menu_cab).start(MainActivity.this);                else if (!mCab.isActive())                    mCab.reset().setMenu(R.menu.menu_cab).start(MainActivity.this);                adapter.isShow = true;//长按改变checkbox显示状态                adapter.notifyDataSetChanged();                return true;            }            @Override            public void setOnItemCheckedChanged(int position, boolean isCheck) {                listCheck.set(position,isCheck);            }        });    }    @Override    public boolean onCabCreated(MaterialCab cab, Menu menu) {//长按弹出顶部的图标，此时将checkbox状态全部置为false for (int i = 0; i < listCheck.size(); i++) {            listCheck.set(i, false);        }        return true;    }    @Override    public boolean onCabItemClicked(MenuItem item) {        switch (item.getItemId()) {            case R.id.menu_delete:                int length=listCheck.size();                for (int i = length-1; i>=0; i--) {                    if (listCheck.get(i)) {                        list.remove(i);                        listCheck.remove(i);                        adapter.notifyItemRemoved(i);                        adapter.notifyItemRangeChanged(0,list.size());                    }                }                break;            case R.id.menu_select_all:                for (int i = 0; i < listCheck.size(); i++) {                    listCheck.set(i, true);                }                adapter.notifyDataSetChanged();                break;        }        return true;    }    @Override    public boolean onCabFinished(MaterialCab cab) {        adapter.isShow = false;        adapter.notifyDataSetChanged();        return true;    }    @Override    public void onBackPressed() {        if (mCab != null && mCab.isActive()) {            mCab.finish();            mCab = null;        } else {            super.onBackPressed();        }    }}

代码已上传。http://download.csdn.net/detail/u014290233/9585430