全选 反选

activity_main

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.baway.www.chenzhenyan20170619.MainActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal"        android:padding="10dp"        >        <Button            android:onClick="checkAll"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="全选"            />        <TextView            android:layout_weight="1"            android:layout_width="0dp"            android:layout_height="wrap_content" />        <Button            android:onClick="Invert"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="反选"            />    </LinearLayout>    <android.support.v7.widget.RecyclerView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/recycler"        >    </android.support.v7.widget.RecyclerView></LinearLayout>

recycle_item

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="horizontal"    android:padding="15dp"    android:layout_margin="5dp"    android:background="#AAAAAA"    >    <TextView        android:id="@+id/text"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="1"        android:textSize="20sp"        />    <TextView        android:layout_weight="1"        android:layout_width="0dp"        android:layout_height="wrap_content" />    <CheckBox        android:id="@+id/checkbox"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></LinearLayout>

Bean

package com.baway.www.chenzhenyan20170619;public class Bean {    private String text;    private boolean is;    public Bean(String text, boolean is) {        this.text = text;        this.is = is;    }    public String getText() {        return text;    }    public void setText(String text) {        this.text = text;    }    public boolean is() {        return is;    }    public void setIs(boolean is) {        this.is = is;    }}

MainActivity

public class MainActivity extends AppCompatActivity {    private RecyclerView recyclerView;    private List<Bean> beans;    private MyrRecyclerAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initID();        info();       //设置recycler布局类型        LinearLayoutManager manager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);        adapter = new MyrRecyclerAdapter(this);        adapter.setmList(beans);        adapter.setMyItemClick(new MyItemClick() {            @Override            public void myItemOnClick(View v, int position) {                Toast.makeText(MainActivity.this,position+"",Toast.LENGTH_SHORT).show();            }            @Override            public void myItemLongOnClick(View v, int position) {                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);                builder.setMessage(position+"");                builder.create().show();            }        });        recyclerView.setLayoutManager(manager);        recyclerView.setAdapter(adapter);        // 实现的事条目下的分割线        recyclerView.addItemDecoration(new MyDecoration(this));    }    public void initID(){        recyclerView = (RecyclerView) findViewById(R.id.recycler);    }    public void info(){        beans = new ArrayList<>();        for (int i = 0; i <100 ; i++) {            beans.add(new Bean(i+"",false));        }    }    //点击按钮    public void checkAll(View view){        for (int i = 0; i < beans.size() ; i++) {            beans.get(i).setIs(true);        }        adapter.setmList(beans);        adapter.notifyDataSetChanged();    }    public void Invert(View view){        for (int i = 0; i < beans.size() ; i++) {            if(beans.get(i).is()){                beans.get(i).setIs(false);            }else {                beans.get(i).setIs(true);            }        }        adapter.setmList(beans);        adapter.notifyDataSetChanged();    }}

MyDecoration

public class MyDecoration extends RecyclerView.ItemDecoration {    private Context context;    public  MyDecoration(Context context){        this.context = context;    }    @Override    public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {        super.onDraw(c, parent, state);        int count = parent.getChildCount();        for (int i = 0; i < count; i ++){            View view = parent.getChildAt(i);            int left = view.getLeft();            int right = view.getRight();            int top = view.getBottom()-10;            int bottom = view.getBottom();            Paint paint = new Paint();            paint.setColor(Color.GREEN);            c.drawRect(left,top,right,bottom,paint);        }    }}

MyItemClick

public interface MyItemClick {    void myItemOnClick(View v, int position);    void myItemLongOnClick(View v,int position);}

MyrRecyclerAdapter

public class MyrRecyclerAdapter extends RecyclerView.Adapter<MyrRecyclerAdapter.MyViewHolder> {    private List<Bean> mList;    private final LayoutInflater mLayoutInflater;    private MyItemClick myItemClick;    public MyrRecyclerAdapter(Context context) {        mLayoutInflater = LayoutInflater.from(context);    }    public void setmList(List<Bean> mList) {        this.mList = mList;    }    public void setMyItemClick(MyItemClick myItemClick) {        this.myItemClick = myItemClick;    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View inflate = mLayoutInflater.inflate(R.layout.recycle_item, parent, false);        MyViewHolder holder = new MyViewHolder(inflate);        holder.checkBox= (CheckBox) inflate.findViewById(R.id.checkbox);        holder.textView=(TextView) inflate.findViewById(R.id.text);        return holder;    }    @Override    public void onBindViewHolder(final MyViewHolder holder, final int position) {        holder.textView.setText(mList.get(position).getText());        holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {            @Override            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {                //    1.点击某个条目中的CheckBox如果未选中，则实现单击选中效果（10分）                //    2.点击某个条目中的CheckBox如果已选中，则实现单击反选效果（10分）                if(isChecked){                    mList.get(position).setIs(isChecked);                }else {                    mList.get(position).setIs(false);                }            }        });        holder.checkBox.setChecked(mList.get(position).is());        holder.itemView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                myItemClick.myItemOnClick(holder.itemView,holder.getLayoutPosition());            }        });        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {            @Override            public boolean onLongClick(View v) {                myItemClick.myItemLongOnClick(holder.itemView,holder.getLayoutPosition());                return false;            }        });    }    @Override    public int getItemCount() {        return mList==null ? 0:mList.size();    }    class MyViewHolder extends RecyclerView.ViewHolder{        private TextView textView;        private CheckBox checkBox;        public MyViewHolder(View itemView) {            super(itemView);        }    }}