我已经安装在我看来,一个SimpleCursorAdapter,它工作正常,当我从我的数据库获取数据。该查询使用ORDER BY日期DESC子句中运行。所有行被提取,并在我的ListView很好地显示出来,我使用adapter.setViewBinder(),以一些逻辑添加到项目(增加了缩略图)。
I have setup a SimpleCursorAdapter on my view and it works fine when I'm fetching the data from my database. The query is run using a ORDER BY date DESC-clause. All rows are fetched and displayed nicely in my ListView, and I'm using adapter.setViewBinder() to add some logic to the items (adding a thumbnail).
在code是这样的:
// Setup the adapter
adapter = new SimpleCursorAdapter(this, R.layout.rowitem, cursor, FROM, TO);
adapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() {
@Override
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
// Only taylor the ImageView in the adapter-list, skip everything else.
if (view.getId() != R.id.imageItem)
return false;
// here goes the logic, but it's cut away due to its size
}
return true;
}
});
现在我想添加一些更多的逻辑:我想补充包含日期的小分隔栏,如果日期是两个项目之间的变化,这样的:
Now I want to add some more logic: I want to add a small separator bar containing the date if the date is changed between two items, like this:
=== DATE1 ===============
Item 1
Item 2
=== DATE2 ===============
Item 3
=== DATE3 ===============
Item 4
Item 5
Item 6
=== DATE4 ===============
Item 7
等。但是,我不知道如何插入一个新视图元素的适配器的内部,我似乎无法找到developer.android.com答案。
and so on. However, I'm not sure how to insert a new View-element inside of an adapter and I cannot seem to find an answer on developer.android.com.
我怎样才能做到这一点?
How can I accomplish this?
- 编辑 -
好这里是这个问题的一个简单的解决方案:
Okay here is an easy solution for this problem:
Custom ListView控件与日期为SectionHeader(使用定制SimpleCursorAdapter)
---旧帖子--- 我不能对你的第一篇文章发表评论,但我想恳请你,如果你能在一个更详细一点,你如何设法得到该列表日期头解释。 你将不得不遍历所有的光标,行还是有框架提供一个更好的办法?
--- old post --- I couldn't comment on your first Post but I wanted to kindly ask you if you could explain in a little more detail how you managed to get this list with date headers. You would have to iterate over all the curser-rows or is there a better way provided by the framework?
我有好几个项目,如果我重复与而(listData.moveToNext()){
它需要长。 (我也有从unixtime戳来计算一个日历,一个日期,到一个月 - 诠释)。
I have quite a few items and if I iterate with while(listData.moveToNext()){
it takes to long. (I also have to calculate from a unixtime stamp to a Calendar, to a Date, to a month-Int).