RecyclerView中CheckBox复用处理以及批量操作

private List selectedPositions;

需要初始化

qxCb.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        boolean isCheck = qxCb.isChecked();
        if (isCheck) {
            selectedPositions.clear();
            for (int i = 0; i < sourceList.size(); i++) {
                selectedPositions.add(i + "");
            }
            adapter.notifyDataSetChanged();
        } else {
            selectedPositions.clear();
            adapter.notifyDataSetChanged();
        }
    }
});

final CheckBox checkBox = holder.getView(R.id.selectCb);
if (selectedPositions.contains(layoutPosition + "")) {
    checkBox.setChecked(true);
} else {
    checkBox.setChecked(false);
}

checkBox.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        boolean isChecked = checkBox.isChecked();
        if (isChecked) {
            checkBox.setClickable(false);
            checkBox.setEnabled(false);
            if (!selectedPositions.contains(layoutPosition + "")) {
                selectedPositions.add(layoutPosition + "");
                checkBox.setClickable(true);
                checkBox.setEnabled(true);
            } else {
                checkBox.setClickable(true);
                checkBox.setEnabled(true);
            }
        } else {
            checkBox.setClickable(false);
            checkBox.setEnabled(false);
            //全选失效
            if (qxCb.isChecked()) {
                qxCb.setChecked(false);
            }
            if (selectedPositions != null && selectedPositions.contains(layoutPosition + "")) {
                selectedPositions.remove(layoutPosition + "");
                checkBox.setClickable(true);
                checkBox.setEnabled(true);
            } else {
                checkBox.setClickable(true);
                checkBox.setEnabled(true);
            }
        }
    }
});