Android RecycleView使用（CheckBox全选、反选、单选）

本文实例为大家分享了checkbox全选、反选、单选的具体代码，供大家参考，具体内容如下

mainactiivity

package com.bwie.day06;

import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.support.v7.widget.linearlayoutmanager;
import android.support.v7.widget.recyclerview;
import android.view.view;

import com.bwie.day06.myadapter.myadapter;

public class mainactivity extends appcompatactivity {

  private myadapter myadapter;
  private linearlayoutmanager linearlayoutmanager;

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    //初始化控件
    recyclerview recyclerview = (recyclerview) findviewbyid(r.id.recyclerview);
    //在加载数据之前配置
    linearlayoutmanager = new linearlayoutmanager(this);
    recyclerview.setlayoutmanager(linearlayoutmanager);
    //创建一个适配器
    myadapter = new myadapter();
    recyclerview.setadapter(myadapter);


  }

  public void btnall(view view) {
    myadapter.all();
  }

  public void btnner(view view) {
    myadapter.neverall();
  }
}

adapter

package com.bwie.day06.myadapter;

import android.support.v7.widget.recyclerview;
import android.view.layoutinflater;
import android.view.view;
import android.view.viewgroup;
import android.widget.checkbox;
import android.widget.textview;

import com.bwie.day06.r;

import java.util.arraylist;
import java.util.hashmap;
import java.util.map;
import java.util.set;


public class myadapter extends recyclerview.adapter<myadapter.myviewholder> {
  //这个是checkbox的hashmap集合
  private final hashmap<integer, boolean> map;
  //这个是数据集合
  private final arraylist<string> list;

  public myadapter() {
    map = new hashmap<>();
    list = new arraylist<>();
    for (int i = 0; i < 30; i++) {
      //添加30条数据
      list.add("这是条目" + i);
      map.put(i, false);
    }

  }

  /**
   * 全选
   */
  public void all() {
    set<map.entry<integer, boolean>> entries = map.entryset();
    boolean shouldall = false;
    for (map.entry<integer, boolean> entry : entries) {
      boolean value = entry.getvalue();
      if (!value) {
        shouldall = true;
        break;
      }
    }
    for (map.entry<integer, boolean> entry : entries) {
      entry.setvalue(shouldall);
    }
    notifydatasetchanged();
  }

  /**
   * 反选
   */
  public void neverall() {
    set<map.entry<integer, boolean>> entries = map.entryset();
    for (map.entry<integer, boolean> entry : entries) {
      entry.setvalue(!entry.getvalue());
    }
    notifydatasetchanged();
  }

  /**
   * 单选
   *
   * @param postion
   */
  public void singlesel(int postion) {
    set<map.entry<integer, boolean>> entries = map.entryset();
    for (map.entry<integer, boolean> entry : entries) {
      entry.setvalue(false);
    }
    map.put(postion, true);
    notifydatasetchanged();
  }

  //这里主要初始化布局控件
  @override
  public myviewholder oncreateviewholder(viewgroup parent, int viewtype) {
    recyclerview.layoutmanager layoutmanager = ((recyclerview) parent).getlayoutmanager();
    //初始化布局文件
    view inflate = layoutinflater.from(parent.getcontext()).inflate(r.layout.check, parent, false);
    return new myviewholder(inflate);
  }

  @override
  public void onbindviewholder(final myviewholder holder, final int position) {
    //放入集合中的值
    holder.txt.settext(list.get(position));
    holder.checkbox.setchecked(map.get(position));
    holder.checkbox.setonclicklistener(new view.onclicklistener() {

      @override
      public void onclick(view v) {
        map.put(position, !map.get(position));
        //刷新适配器
        notifydatasetchanged();
        //单选
//        singlesel(position);

      }
    });

  }

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

  public class myviewholder extends recyclerview.viewholder {
    view itemview;
    private textview txt;
    private checkbox checkbox;

    //初始化控件
    public myviewholder(view itemview) {
      super(itemview);
      this.itemview = itemview;
      txt = (textview) itemview.findviewbyid(r.id.txt);
      checkbox = (checkbox) itemview.findviewbyid(r.id.cbox);
    }
  }
}

main.xml

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

  <button
    android:onclick="btnall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:text="全选" />

  <button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:text="反选"
    android:onclick="btnner"/>

</linearlayout>

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

check.xml

<checkbox
  android:id="@+id/cbox"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" />


<textview
  android:text="dfdfdfdf"
  android:id="@+id/txt"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:textsize="20sp" />

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。