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Android实现可复用的选择页面

2019年09月06日  | 移动技术网IT编程  | 我要评论

郑正雅,海尔洗衣机使用说明,广州摆地摊帅哥

本文实例为大家分享了android实现可复用的选择页面的具体代码，供大家参考，具体内容如下

窗口代码

/**
 * 根据上一个页面传过来的ismultipleenable判断是否可以多选
 * 1.单选页面选中一个条目直接结束并回传
 * 2.多选页面选中之后需要提交
 * 3.提交数据之后需要刷新列表
 */
public class userselectactivity extends appcompatactivity implements view.onclicklistener {

  private static final string tag = "userselectactivity";

  @bindview(r.id.tv_title_middle)
  textview title;
  @bindview(r.id.title_left)
  imageview back;
  @bindview(r.id.normal_user_listview)
  listview mlistview;
  @bindview(r.id.edit_tv)
  textview edit;
  @bindview(r.id.filter_tv)
  textview filter;

  private context mcontext;
  private boolean ismultipleenable;
  private userselectadapter madapter;
  private list<clsnormaluser> mclsnormaluserlist;

  @override
  protected void oncreate(@nullable bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_normal_user_list);
    //初始化butterknife
    butterknife.bind(this);

    initview();
    initdata();
    initlistener();
  }

  private void initdata() {
    mcontext = this;

    //通过源页面传过来的值来生成对应的视图，默认是单选
    ismultipleenable = getintent().getbooleanextra("ismultipleenable", false);

    //初始化数据源
    mclsnormaluserlist = new arraylist<>();
    madapter = new userselectadapter(mclsnormaluserlist, mcontext);
    mlistview.setadapter(madapter);

    getofflinedata(20);

    //多选页面要显示提交按钮和checkbox
    if (ismultipleenable) {
      edit.setcompounddrawableswithintrinsicbounds(r.drawable.ic_send_black_24dp, 0, 0, 0);
      edit.setvisibility(view.visible);

      for (clsnormaluser user : mclsnormaluserlist) {
        user.setischeckboxvisible(true);
      }
    }
  }

  //生成模拟数据
  private void getofflinedata(int num) {
    list<clsnormaluser> clsnormaluserlist = new arraylist<>();
    for (int i = 0; i < num; i++) {
      clsnormaluser clsnormaluser = new clsnormaluser();
      clsnormaluser.setuserid("userid " + i);
      clsnormaluser.setworknumber("worknumber " + i);
      clsnormaluser.setusertype("usertype " + i);
      clsnormaluser.setorgname("orgname " + i);
      clsnormaluser.setcname("cname " + i);
      clsnormaluser.setsysusername("sysusername " + i);
      clsnormaluser.setorgid("orgid " + i);
      clsnormaluser.setworkpos("workpos " + i);
      clsnormaluserlist.add(clsnormaluser);
    }
    //数据填充后要同时适配器刷新视图
    mclsnormaluserlist.addall(clsnormaluserlist);
    madapter.notifydatasetchanged();
  }

  private void initview() {
    title.settext("选择用户");
  }

  private void initlistener() {
    edit.setonclicklistener(this);

    mlistview.setonitemclicklistener((parent, view, position, id) -> {
      clsnormaluser clsnormaluser = mclsnormaluserlist.get(position);
      if (ismultipleenable) {
        //多选状态下点击选中当前条目
        if (clsnormaluser.getischeckboxvisible()) {
          clsnormaluser.setischecked(!clsnormaluser.getischecked());
          madapter.notifydatasetchanged();
        }
      } else {
        //单选状态下点击结束当前页并回传值
        intent intent = new intent();
        //实体类要实现序列化接口parcelable
        intent.putextra("user", clsnormaluser);
        setresult(result_ok, intent);
        finish();
      }
    });
  }


  @override
  public void onclick(view v) {

    //点击提交按钮将选中的值回传并结束当前页
    if (v.getid() == r.id.edit_tv) {
      arraylist<clsnormaluser> normaluserlist = new arraylist<>();
      for (clsnormaluser normaluser : mclsnormaluserlist) {
        if (normaluser.getischecked()) {
          normaluserlist.add(normaluser);
        }
      }
      intent intent = new intent();
      //实体类要实现序列化接口parcelable
      intent.putparcelablearraylistextra("users", normaluserlist);
      setresult(result_ok, intent);
      finish();
    }
  }
}

适配器代码

public class userselectadapter extends baseadapter {

  private list<clsnormaluser> mlist;
  private layoutinflater minflater;

  public userselectadapter(list<clsnormaluser> list, context mcontext) {
    mlist = list;
    minflater = layoutinflater.from(mcontext);
  }

  @override
  public int getcount() {
    return mlist.size();
  }

  @override
  public clsnormaluser getitem(int position) {
    return mlist.get(position);
  }

  @override
  public long getitemid(int position) {
    return position;
  }

  @override
  public view getview(final int position, view convertview, viewgroup root) {
    itemholder holder;
    clsnormaluser clsnormaluser = mlist.get(position);

    if (convertview == null) {
      convertview = minflater.inflate(r.layout.item_alluser_sys, null);
      holder = new itemholder();
      holder.id = convertview.findviewbyid(r.id.user_id);
      holder.name = convertview.findviewbyid(r.id.user_name);
      holder.org = convertview.findviewbyid(r.id.user_org);

      holder.checkbox = convertview.findviewbyid(r.id.user_checkbox);
      convertview.settag(holder);
    } else {
      holder = (itemholder) convertview.gettag();
    }

    holder.id.settext(clsnormaluser.getuserid());
    holder.name.settext(clsnormaluser.getcname());
    holder.org.settext(clsnormaluser.getorgname());

    //是否显示checkbox
    if (clsnormaluser.getischeckboxvisible()) {
      holder.checkbox.setvisibility(view.visible);
    } else {
      holder.checkbox.setvisibility(view.gone);
    }

    //条目是否选中
    if (clsnormaluser.getischecked()) {
      holder.checkbox.setimageresource(r.drawable.ic_check_box_black_24dp);
    } else {
      holder.checkbox.setimageresource(r.drawable.ic_check_box_outline_blank_black_24dp);
    }

    return convertview;
  }

  class itemholder {
    textview id;
    textview name;
    textview org;
    imageview checkbox;
  }
}

效果如图

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移动技术网。

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