Android的：两个EditTexts依赖对方 [英] Android: Two EditTexts dependent on each other

问题描述

我有两个EditTexts。一个用于以℃例如温度，而另一个是在°F的温度。当用户编辑1 EditTexts我想其他相应地改变。

I have two EditTexts. One is for example temperature in °C and the other is temperature in °F. When user edits one EditTexts I want the other to change accordingly.

问题是，这种变化使循环，其中EditTexts使对方的改变。如何解决此问题？我想还有其他的EditText反应当我改变第一个编程连，但没有环......

Problem is that this changes make loop, where EditTexts make changes of each other. How to solve this? I would like to still have reaction in other EditText when I change the first one even programmatically, but without loop...

推荐答案

检查每个的EditText 具有焦点第一个也是唯一改变它编程，如果它不具有焦点。

Check if each EditText has focus first and only change it programmatically if it doesn't have focus.

http://developer.android.com/reference/安卓/浏览/ View.html＃hasFocus（）

的其中之一由用户编辑将具有焦点。另一种则不会。

The one being edited by the user will have focus. The other one won't.

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