listView进行CheckBox的全选、反选

 
<?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:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="test.bwei.com.luzhiwei20170321.MainActivity">
<RelativeLayout
    android:id="@+id/line1"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true">
    <Button
        android:id="@+id/bt_selectall"
        android:layout_width="80dp"
        android:layout_height="fill_parent"
        android:text="全选" />

    <Button
        android:id="@+id/bt_cancleselectall"

        android:layout_width="80dp"
        android:layout_height="fill_parent"
        android:text="反选"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />
</RelativeLayout>
    <ListView
        android:id="@+id/rl"
        android:layout_below="@id/line1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="#000"
        android:dividerHeight="1px"
          />
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/item_tv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
       android:paddingLeft="20dp"
        android:textSize="20sp"
        android:layout_weight="1" />
    <CheckBox
        android:id="@+id/item_cb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"
        android:focusableInTouchMode="false"
        android:gravity="center_vertical" />


</LinearLayout>

public class MainActivity extends AppCompatActivity {

    private Button bt_selectall;
    private Button bt_cancleselectall;
//    private RecyclerView rl;
    private ArrayList<String> list;
    private MyAdapter adapter;
    private ListView rl;
    private int checkNum; // 记录选中的条目数量

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bt_selectall = (Button) findViewById(R.id.bt_selectall);
        bt_cancleselectall = (Button) findViewById(R.id.bt_cancleselectall);

       // rl = (RecyclerView) findViewById(R.id.rl);
        rl = (ListView) findViewById(R.id.rl);
        list = new ArrayList<>();

        initData();

        adapter = new MyAdapter(list,MainActivity.this);

        rl.setAdapter(adapter);

        // 全选按钮的回调接口
        bt_selectall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 遍历list的长度，将MyAdapter中的map值全部设为true
                for (int i = 0; i < list.size(); i++) {
                    MyAdapter.getIsSelected().put(i, true);
                }
                // 数量设为list的长度
                checkNum = list.size();
                // 刷新listview和TextView的显示
                dataChanged();
            }
        });
        // 反选按钮的回调接口
        bt_cancleselectall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // 遍历list的长度，将已选的设为未选，未选的设为已选
                for (int i = 0; i < list.size(); i++) {
                    if (MyAdapter.getIsSelected().get(i)) {
                        MyAdapter.getIsSelected().put(i, false);
                        checkNum--;
                    } else {
                        MyAdapter.getIsSelected().put(i, true);
                        checkNum++;
                    }
                }
                // 刷新listview和TextView的显示
                dataChanged();
            }
        });
        // 绑定listView的监听器
        rl.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                                    long arg3) {
                // 取得ViewHolder对象，这样就省去了通过层层的findViewById去实例化我们需要的cb实例的步骤
                MyAdapter.ViewHolder holder = (MyAdapter.ViewHolder) arg1.getTag();
                // 改变CheckBox的状态
                holder.cb.toggle();
                // 将CheckBox的选中状况记录下来
                MyAdapter.getIsSelected().put(arg2, holder.cb.isChecked());
                // 调整选定条目
                if (holder.cb.isChecked() == true) {
                    checkNum++;
                } else {
                    checkNum--;
                }

            }
        });

    }

    private void initData() {
        for (int i = 0; i < 100; i++) {
            list.add(i+"");
        }
    }

    // 刷新listview和TextView的显示
    private void dataChanged() {
        // 通知listView刷新
        adapter.notifyDataSetChanged();

    }
}


/**
 * Created by lenovo on 2017/3/21.
 */

public class MyAdapter extends BaseAdapter {


    // 填充数据的list
    private ArrayList<String> list;
    // 用来控制CheckBox的选中状况
    private static HashMap<Integer, Boolean> isSelected;
    // 上下文
    private Context context;
    // 用来导入布局
    private LayoutInflater inflater = null;
    // 构造器
    public MyAdapter(ArrayList<String> list, Context context) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
        isSelected = new HashMap<Integer, Boolean>();
        // 初始化数据
        initDate();
    }
    // 初始化isSelected的数据
    private void initDate() {
        for (int i = 0; i < list.size(); i++) {
            getIsSelected().put(i, false);
        }
    }
 
    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int i) {
        return list.get(i);
    }

    @Override
    public long getItemId(int i) {
        return i;
    }

    @Override
    public View getView(final int i, View view, ViewGroup viewGroup) {
        ViewHolder holder = null;
        if (view == null) {
            // 获得ViewHolder对象
            holder = new ViewHolder();
            // 导入布局并赋值给convertview
            view = inflater.inflate(R.layout.item, null);
            holder.tv = (TextView) view.findViewById(R.id.item_tv);
            holder.cb = (CheckBox) view.findViewById(R.id.item_cb);
            // 为view设置标签
            view.setTag(holder);
        } else {
            // 取出holder
            holder = (ViewHolder) view.getTag();
        }
        // 设置list中TextView的显示
        holder.tv.setText(list.get(i));
        // 根据isSelected来设置checkbox的选中状况
        holder.cb.setChecked(getIsSelected().get(i));


        holder.tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(context,""+list.get(i),Toast.LENGTH_SHORT).show();
            }
        });

        return view;
    }

    public static HashMap<Integer, Boolean> getIsSelected() {
        return isSelected;
    }
    public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {
        MyAdapter.isSelected = isSelected;
    }
    public static class ViewHolder {
        TextView tv;
        CheckBox cb;
    }

}