Android使用RecyclerView实现列表数据选择操作

public class CheckRecyclerViewActivity extends AppCompatActivity implements CheckAdapter.CheckItemListener {  //适配器  private CheckAdapter mCheckAdapter;  //列表  private RecyclerView check_rcy;  //全选操作  private CheckBox check_all_cb;  //列表数据  private List<CheckBean> dataArray;  //选中后的数据  private List<CheckBean> checkedList;  private boolean isSelectAll;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_check_recyclerview);    checkedList = new ArrayList<>();    initDatas();    initViews();  }  private void initViews() {    check_rcy = (RecyclerView) findViewById(R.id.check_rcy);    check_all_cb = (CheckBox) findViewById(R.id.check_all_cb);    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);    check_rcy.setLayoutManager(linearLayoutManager);    mCheckAdapter = new CheckAdapter(this, dataArray, this);    check_rcy.setAdapter(mCheckAdapter);    //如果使用CheckBox的OnCheckedChangeListener事件，则选中事件会有一些意想不到的结果，欢迎体验    //在列表Item中的CheckBox也一样的效果    check_all_cb.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View view) {        isSelectAll = !isSelectAll;        checkedList.clear();        if (isSelectAll) {//全选处理          checkedList.addAll(dataArray);        }        for (CheckBean checkBean : dataArray) {          checkBean.setChecked(isSelectAll);        }        mCheckAdapter.notifyDataSetChanged();      }    });  }  private void initDatas() {    dataArray = new ArrayList<>();    for (int i = 0; i < 20; i++) {      CheckBean bean = new CheckBean();      bean.setOrder(String.valueOf(i + 1));      bean.setName("名称_" + i);      bean.setContent("第" + i + "条内容");      bean.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));      dataArray.add(bean);    }  }  @Override  public void itemChecked(CheckBean checkBean, boolean isChecked) {    //处理Item点击选中回调事件    if (isChecked) {      //选中处理      if (!checkedList.contains(checkBean)) {        checkedList.add(checkBean);      }    } else {      //未选中处理      if (checkedList.contains(checkBean)) {        checkedList.remove(checkBean);      }    }    //判断列表数据是否全部选中    if (checkedList.size() == dataArray.size()) {      check_all_cb.setChecked(true);    } else {      check_all_cb.setChecked(false);    }  }}