Android的ListView控件与复选框：自动取消选中 [英] Android ListView with Checkbox: automatically unchecks

问题描述

我有一个自定义的BaseAdapter一个ListView。列表项包含需要从数据库中重新present属性复选框。

I've got a ListView with a custom BaseAdapter. The list items contain CheckBoxes that need to represent a property from a database.

我用CheckBox.setOnCheckedChangeListener一个新的OnCheckedChangeListener及时发现变化，这样我就可以根据复选框的当前状态更改数据库。 pretty的简单的东西为止。

I use CheckBox.setOnCheckedChangeListener with a new OnCheckedChangeListener to detect changes, so I can change the database based on the current state of the CheckBox. Pretty straightforward stuff so far.

然而，进一步在列表中向下滚动时，previously选中的复选框取消选中获得。我猜想一旦意见被循环发生这种情况（我使用了convertView / ViewHolder技术）。

However, when scrolling further down the list, previously checked CheckBoxes get unchecked. I suspect this happens as soon as the views are recycled (I'm using the convertView/ViewHolder technique).

我怎样才能停止？这是怎么回事了？

How can I stop this? What's going wrong?

在此先感谢。

编辑：为了让事情更清楚一点，问题是，回收的观点在某种程度上要求OnCheckedChangeListener＃onCheckedChanged（buttonView，器isChecked）与==器isChecked假

To make things a bit clearer, the problem is that recycling views somehow calls OnCheckedChangeListener#onCheckedChanged(buttonView, isChecked) with isChecked == false.

推荐答案

显然的问题是，通过获取使用convertView.findViewById（）复选框，则onCheckedChangeListeners仍然完好无缺，如果有人回收。调用checkbox.setOnCheckedChangeListener（空），并获得成功。

Apparently the problem was that, by getting the checkbox using convertView.findViewById(), the onCheckedChangeListeners were still intact if the view was recycled. Calling checkbox.setOnCheckedChangeListener(null) did the trick.

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