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

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。