Android编程实现仿美团或淘宝的多级分类菜单效果示例【附demo源码下载】

popupWindow = new PopupWindow(this);
View view = LayoutInflater.from(this).inflate(R.layout.popup_layout, null);
leftLV = (ListView) view.findViewById(R.id.pop_listview_left);
rightLV = (ListView) view.findViewById(R.id.pop_listview_right);
popupWindow.setContentView(view);
popupWindow.setBackgroundDrawable(new PaintDrawable());
popupWindow.setFocusable(true);
popupWindow.setHeight(ScreenUtils.getScreenH(this) * 2 / 3);
popupWindow.setWidth(ScreenUtils.getScreenW(this));
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
  @Override
  public void onDismiss() {
    darkView.startAnimation(animOut);
    darkView.setVisibility(View.GONE);
    leftLV.setSelection(0);
    rightLV.setSelection(0);
  }
});

//左侧ListView点击事件
leftLV.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    //二级数据
    List<SecondClassItem> list2 = firstList.get(position).getSecondList();
    //如果没有二级类，则直接跳转
    if (list2 == null || list2.size() == 0) {
      popupWindow.dismiss();
      int firstId = firstList.get(position).getId();
      String selectedName = firstList.get(position).getName();
      handleResult(firstId, -1, selectedName);
      return;
    }
    FirstClassAdapter adapter = (FirstClassAdapter) (parent.getAdapter());
    //如果上次点击的就是这一个item，则不进行任何操作
    if (adapter.getSelectedPosition() == position){
      return;
    }
    //根据左侧一级分类选中情况，更新背景色
    adapter.setSelectedPosition(position);
    adapter.notifyDataSetChanged();
    //显示右侧二级分类
    updateSecondListView(list2, secondAdapter);
  }
});

//右侧ListView点击事件
rightLV.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    //关闭popupWindow，显示用户选择的分类
    popupWindow.dismiss();
    int firstPosition = firstAdapter.getSelectedPosition();
    int firstId = firstList.get(firstPosition).getId();
    int secondId = firstList.get(firstPosition).getSecondList().get(position).getId();
    String selectedName = firstList.get(firstPosition).getSecondList().get(position)
        .getName();
    handleResult(firstId, secondId, selectedName);
  }
});

if (popupWindow.isShowing()) {
  popupWindow.dismiss();
} else {
  popupWindow.showAsDropDown(findViewById(R.id.main_div_line));
  popupWindow.setAnimationStyle(-1);
  //背景变暗
  darkView.startAnimation(animIn);
  darkView.setVisibility(View.VISIBLE);
}

//刷新右侧ListView
private void updateSecondListView(List<SecondClassItem> list2,
    SecondClassAdapter secondAdapter) {
    secondList.clear();
    secondList.addAll(list2);
    secondAdapter.notifyDataSetChanged();
}