Android - 自动回收列表视图元素？
我创建了一个具有自定义 SimpleCursorAdapter 的列表视图。我想在列表中的第一个元素中放置一个标题。屏幕上一次可显示 8 个视图。当我向下滚动到第九个视图时，会出现第一个元素的标题。至少我相信这就是正在发生的事情。我删除了列表视图上方的一个按钮，允许所有元素出现在屏幕上，并且只有第一个元素具有标题。
我相信我每次都在强迫一种新的观点被夸大。我已经阅读了一些关于 ConvertView 的内容，它似乎是您必须手动实现的东西。
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final LayoutInflater inflater = LayoutInflater.from(context);
int position = cursor.getPosition();
View v;
v = inflater.inflate(R.layout.roster_lv_row_entry_with_header, parent, false);
if(position > 0)
v = inflater.inflate(R.layout.roster_lv_row_entry_no_header, parent, false);
return v;
I created a listview that has a custom SimpleCursorAdapter. I want to place a header in the first element in the list. 8 views fit on the screen at a time. When I scroll down to the ninth view, the header of the 1st element appears. At least I believe that is what is happening. I removed a button above the listview allowing all of the elements to appear on screen and only the first element had the header.
I believe I am forcing a new view to be inflated each time. I have read up a bit on convertview and it appears to be something that you have to implement manually.
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
final LayoutInflater inflater = LayoutInflater.from(context);
int position = cursor.getPosition();
View v;
v = inflater.inflate(R.layout.roster_lv_row_entry_with_header, parent, false);
if(position > 0)
v = inflater.inflate(R.layout.roster_lv_row_entry_no_header, parent, false);
return v;
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您应该重写适配器类中的
(final intposition, View ConvertView, ViewGroupparent)方法，并将convertView参数分配给新值（如果需要，但如果类型正确，最好使用它，并根据
yourListData.get(position)使用正确的数据填充它，其中yourListData是一个List扩展。）You shoul override the
(final int position, View convertView, ViewGroup parent)method in your adapter class, andconvertViewparameter anew value (if necessary, but better just use it if it's the right type, and fill it with the proper data based on
yourListData.get(position), whereyourListDatais e.g. aList<?>extension.)