带有复选框问题的自定义列表视图 [英] Custom listview with checkbox problem

问题描述

我正在尝试创建一个自定义列表，其中包含允许您从列表中选择多个项目的复选框.

带有复选框的列表显示正常，但如果我选中一个复选框，然后将其他项目进一步向下滚动，列表也会被选中.

它与此处

我知道这与 android 回收视图的方式有关，但我不知道如何解决这个问题！有人可以帮我吗???

谢谢——迈克

解决方案

您需要一个数据结构来跟踪检查了哪些行.这可以像bool[]检查一样简单.

在您的 getView 中，确保将复选框状态设置为 checked[position] 的内容.您还应该设置一个 OnCheckedChangedListener 在 getView 中的复选框上，以便它们使用 checked[position] = isChecked 更新您的数据.

是的，ListView 中的行会被回收，因此请确保在离开 getView 之前填充一行的所有适当数据.

I'm trying to create a custom list which will have checkboxes that allow you to select several items from the list.

The list with the checkboxes is displayed ok but if i check a checkbox and then scroll other items further down the list are also checked.

Its basically the same problem as here

I understand that it has something to do with the way android recycles the view but I cant see how to fix this! Can somebody help me???

Thanks -- Mike

解决方案

You need a data structure to keep track of which rows are checked. This could be as simple as a bool[] checked.

In your getView, make sure that you set the checkbox state to the contents of checked[position]. You should also set an OnCheckedChangedListener on your check boxes in getView so that they update your data with checked[position] = isChecked.

Yes, the rows in a ListView are recycled, so make sure to populate all the appropriate data for a row before you leave getView.

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