Android使用RecyclerView实现列表数据选择操作

这些时间做安卓盒子项目，因为安卓电视的显示器比较大，所以一个界面显示 很多数据 ，最多的时候，一个actvity中用到了好几个recyclerview。

在recyclerview中实现item选中处理时，发现用checkbox的oncheckedchangelistener监听事件时，会达不到预期，所以用了onclicklistener来实现。

主界面代码：

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);
    }
  }
}

列表数据适配器：

public class checkadapter extends recyclerview.adapter<checkadapter.viewholder> {
  private context mcontext;
  private list<checkbean> mdatas;
  private checkitemlistener mchecklistener;

  public checkadapter(context mcontext, list<checkbean> mdatas, checkitemlistener mchecklistener) {
    this.mcontext = mcontext;
    this.mdatas = mdatas;
    this.mchecklistener = mchecklistener;
  }

  @override
  public viewholder oncreateviewholder(viewgroup parent, int viewtype) {
    view view = layoutinflater.from(mcontext).inflate(r.layout.check_recyclerview_item, parent, false);
    viewholder viewholder = new viewholder(view);
    return viewholder;
  }

  @override
  public void onbindviewholder(final viewholder holder, final int position) {
    final checkbean bean = mdatas.get(position);
    holder.item_order_tv.settext(bean.getorder());
    holder.item_name_tv.settext(bean.getname());
    holder.item_content_tv.settext(bean.getcontent());
    holder.item_time_tv.settext(bean.gettime());
    holder.item_cb.setchecked(bean.ischecked());
    //点击实现选择功能，当然可以把点击事件放在item_cb对应的checkbox上，只是焦点范围较小
    holder.item_content_ll.setonclicklistener(new view.onclicklistener() {
      @override
      public void onclick(view view) {
        bean.setchecked(!bean.ischecked());
        holder.item_cb.setchecked(bean.ischecked());
        if (null != mchecklistener) {
          mchecklistener.itemchecked(bean, holder.item_cb.ischecked());
        }
        notifydatasetchanged();
      }
    });
  }

  @override
  public int getitemcount() {
    return mdatas.size();
  }

  public class viewholder extends recyclerview.viewholder {
    //序号
    private textview item_order_tv;
    //选择
    private checkbox item_cb;
    //整个条目
    private linearlayout item_content_ll;
    //名称
    textview item_name_tv;
    //内容
    textview item_content_tv;
    //时间
    private textview item_time_tv;


    public viewholder(view itemview) {
      super(itemview);
      item_order_tv = (textview) itemview.findviewbyid(r.id.item_order_tv);
      item_cb = (checkbox) itemview.findviewbyid(r.id.item_cb);
      item_name_tv = (textview) itemview.findviewbyid(r.id.item_name_tv);
      item_content_tv = (textview) itemview.findviewbyid(r.id.item_content_tv);
      item_time_tv = (textview) itemview.findviewbyid(r.id.item_time_tv);
      item_content_ll = (linearlayout) itemview.findviewbyid(r.id.item_content_ll);
    }
  }

  public interface checkitemlistener {

    void itemchecked(checkbean checkbean, boolean ischecked);
  }
}

测试数据实体bean:

public class checkbean implements serializable {
  private string order;
  private string name;
  private string content;
  private string time;
  private boolean ischecked;

  public string getorder() {
    return order;
  }

  public void setorder(string order) {
    this.order = order;
  }

  public string getname() {
    return name;
  }

  public void setname(string name) {
    this.name = name;
  }

  public string getcontent() {
    return content;
  }

  public void setcontent(string content) {
    this.content = content;
  }

  public string gettime() {
    return time;
  }

  public void settime(string time) {
    this.time = time;
  }

  public boolean ischecked() {
    return ischecked;
  }

  public void setchecked(boolean checked) {
    ischecked = checked;
  }
}

主界面布局文件：

<?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:layout_margin="10dp"
    android:background="@drawable/drawable_white_round_bg"
    android:orientation="vertical">

  <linearlayout
      android:layout_width="match_parent"
      android:layout_height="20dp"
      android:orientation="horizontal">

    <textview
        android:layout_width="40dp"
        android:layout_height="match_parent"
        android:text="序号"
        android:layout_marginleft="10dp"
        android:textsize="12sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <checkbox
        android:id="@+id/check_all_cb"
        android:layout_width="12dp"
        android:layout_gravity="center"
        android:button="@null"
        android:layout_marginleft="10dp"
        android:layout_marginright="10dp"
        android:layout_height="12dp"
        android:background="@drawable/drawable_cb_selector"
        />

    <textview
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="名称"
        android:layout_marginleft="10dp"
        android:textsize="12sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <textview
        android:layout_width="100dp"
        android:layout_height="match_parent"
        android:text="内容"
        android:layout_marginleft="10dp"
        android:textsize="12sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <textview
        android:layout_width="80dp"
        android:layout_height="match_parent"
        android:text="时间"
        android:layout_marginleft="10dp"
        android:textsize="12sp"
        android:textcolor="#333333"
        android:gravity="center"
        />
  </linearlayout>

  <view
      android:layout_width="match_parent"
      android:layout_height="1px"
      android:background="#bcbcbc"></view>

  <android.support.v7.widget.recyclerview
      android:id="@+id/check_rcy"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"></android.support.v7.widget.recyclerview>

</linearlayout>

列表item布局：

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:orientation="vertical"
       android:layout_width="match_parent"
       android:layout_height="wrap_content">

  <linearlayout
      android:id="@+id/item_content_ll"
      android:layout_width="match_parent"
      android:layout_height="40dp"
      android:orientation="horizontal">

    <textview
        android:id="@+id/item_order_tv"
        android:layout_width="40dp"
        android:layout_height="match_parent"
        android:layout_marginleft="10dp"
        android:textsize="15sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <checkbox
        android:id="@+id/item_cb"
        android:layout_width="20dp"
        android:layout_gravity="center"
        android:button="@null"
        android:layout_marginleft="10dp"
        android:layout_marginright="10dp"
        android:layout_height="20dp"
        android:background="@drawable/drawable_cb_selector"
        />

    <textview
        android:id="@+id/item_name_tv"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_marginleft="10dp"
        android:textsize="15sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <textview
        android:id="@+id/item_content_tv"
        android:layout_width="100dp"
        android:layout_height="match_parent"
        android:layout_marginleft="10dp"
        android:textsize="15sp"
        android:textcolor="#333333"
        android:gravity="center"
        />

    <textview
        android:id="@+id/item_time_tv"
        android:layout_width="120dp"
        android:layout_height="match_parent"
        android:layout_marginleft="10dp"
        android:textsize="15sp"
        android:textcolor="#333333"
        android:gravity="center"
        />
  </linearlayout>

  <view
      android:layout_width="match_parent"
      android:layout_height="1px"
      android:background="#bcbcbc"/>
</linearlayout>

界面布局是随意写的，请根据实际情况调整。上丑图：

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