问题描述
我有一个显示多个项目的列表视图.现在我想滚动到某个特定项目(例如第 33 个项目).我知道这可以通过
I have a listview which displays several items. Now I want to scroll to some specific item (e.g. the 33th item). I know that this can be done via
myList.setSelection(32);
但在 UI 上，该项目没有收到任何突出显示(因为它处于触摸模式?！).如何为该项目应用特定的背景颜色?我试过了
But on the UI the item doesn't receive any highlighting (because it is in touch mode?!). How can I apply a specific background color for this item? I tried
myList.getSelection().getSelectedView().setBackgroundColor(Color.Red);
但我得到一个 NullPointerException 因为 getSelectedView() 返回 null.有没有办法实现这种突出显示?我必须以某种方式通知用户哪个项目是活动"项目...
but i get a NullPointerException because getSelectedView() returns null. Is there a way to achieve this highlighting? I have to notify the user somehow about which item is the "active" one...
推荐答案
试试这个，会成功的-
myList.getChildAt(myList.getSelectedItemPosition()).setBackgroundColor(Color.RED);
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