在實際開發過程中,經常會碰到ScrollView中嵌套ListView的情景。
可是如果直接使用ScrollView嵌套ListView的話,我們會發現,ListView只能顯示一行。
所以需要動態計算ListView 高度,如下代碼:
private HomeAdapter adapter; private List<GoodsBean> goods; private ListView ll_goods; ll_goods = view.findViewById(R.id.ll_goods); adapter = new HomeAdapter(getContext()); goods = new ArrayList<>(); goods.add(new GoodsBean("百仙草1",300f,"含有人體所需的【葉綠素】","權益積分 9000")); goods.add(new GoodsBean("百仙草2",300f,"含有人體所需的【葉綠素】","權益積分 9000")); goods.add(new GoodsBean("百仙草3",300f,"含有人體所需的【葉綠素】","權益積分 9000")); adapter.setDataList(goods); ll_goods.setAdapter(adapter); adapter.notifyDataSetChanged(); int totalHeight = 0; for (int i = 0, len = adapter.getCount(); i < len; i++) { // listAdapter.getCount()返回數據項的數目 View listItem = adapter.getView(i, null, ll_goods); // 計算子項View 的寬高 listItem.measure(0, 0); // 統計所有子項的總高度 totalHeight += listItem.getMeasuredHeight(); }
ViewGroup.LayoutParams params = ll_goods.getLayoutParams(); params.height = totalHeight+ (ll_goods.getDividerHeight() * (adapter.getCount() - 1)); // listView.getDividerHeight()獲取子項間分隔符佔用的高度 // params.height最後得到整個ListView完整顯示需要的高度 ll_goods.setLayoutParams(params);