Android的：如何使一个ListView RadioGroup中正常工作？ [英] Android: How to make RadioGroup work correctly in a ListView?

问题描述

我有一个ListView，它有一个TextView和4单选按钮为儿童每一行中的RadioGroup中。 现在，我可以选择每个行中的单选按钮。但是，如果我滚动的ListView，我的选择是走还是不正确显示。例如，我选择了一个单选按钮排在第一位，如果我滚动ListView控件，然后再回到第一排一遍，要么没有在RadioGroup中的单选按钮的检查或单选C的检查，而不是A. 我怎样才能解决这个问题？我曾尝试7天了，但我仍然没有找到解决办法。任何人可以帮助我吗？我会很并欣赏这一点。

I have a ListView, which has a TextView and a RadioGroup with 4 RadioButtons as Children in each row. Now i can select a RadioButton in each row. But if i scroll the ListView, my Selection is gone or it does not show correctly. For example, i choose the RadioButton A in the first row, if i scroll through the ListView and then go back to the first row again, either none of the RadioButtons in the RadioGroup is checked or RadioButton C is checked instead of A. How can i fix this Problem? I have tried 7 days already, but still i find no solution. Can anybody help me? I'll be very appriciate of that.

推荐答案

在 getView（）（或 bindView（）如果您使用的是的CursorAdapter ）被称为您的适配器，您需要设置的状态 RadioGroup中 。 Android的回收行，是不会追踪那些 RadioGroup中规定你。

When getView() (or bindView() if you are using a CursorAdapter) is called on your adapter, you need to set the state of the RadioGroup. Android recycles rows and is not going to track those RadioGroup states for you.

看到这里的示例项目，有一个的RatingBar 在连续的通用技术。这也包括在这个免费的摘录从一个我的书。

See here for a sample project that has a RatingBar in a row for the general technique. This is also covered in this free excerpt from one my books.

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