Android自定义单选多选下拉列表的实例代码

发疯的产品要做一个可以单选和多选的下拉列表，陪你玩玩吧。

直接上效果：

实现方案：

我的思路是自定义一个类继承popupwindow，里面的选项采用listview，再结合一些动画来实现。

核心代码：

public class multiselectpopupwindows extends popupwindow {

  private context context;
  private view parent;
  private list<search> data;
  private int ystart;
  private searchpopupwindowsadapter adapter;

  public multiselectpopupwindows(context context, view parent, int ystart, list<search> data) {
    this.context = context;
    this.parent = parent;
    this.ystart = ystart;
    this.data = data;
    initview();
  }

  private void initview() {
    view view = view.inflate(context, r.layout.popupwindows_multiselect, null);
    view.startanimation(animationutils.loadanimation(context, r.anim.fade_in_slow));
    linearlayout linearlayout = (linearlayout) view.findviewbyid(r.id.linearlayout_selector);
    linearlayout.startanimation(animationutils.loadanimation(context, r.anim.list_top_in));
    listview listview = (listview) view.findviewbyid(r.id.listview_selector);

    setwidth(viewgroup.layoutparams.match_parent);
    setheight(viewgroup.layoutparams.wrap_content);
    setbackgrounddrawable(new bitmapdrawable());
    setfocusable(true);
    setoutsidetouchable(true);
    setcontentview(view);
    showatlocation(parent, gravity.top, 0, densityutil.dip2px(context, ystart));
    update();

    initlistview(listview, data);
  }

  private void initlistview(listview listview, list<search> data) {
    adapter = new searchpopupwindowsadapter(context);
    adapter.setitems(data);
    listview.setadapter(adapter);
  }

  public list getitemlist() {
    return adapter.getitemlist();
  }

}
 

项目源码：https://github.com/hfrommane/multiselectpopupwindows

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