如何更改在Java code TextView的价值？ [英] How do I change TextView Value inside Java Code?

问题描述

我工作的一个Android程序。用户点击一个按钮，我做一些数学，我想改变，我有我的一些TextView的对象视图中的值。是否有人可以告诉我怎么做，我的code？

I am working on a android program. A user clicks on a button I do some math and I would like to change the values that I have on my view in some TextView objects. Can someone please tell me how to do it in my code?

推荐答案

我presume，这个问题是一个延续的这个。

I presume that this question is a continuation of this one.

你到底想干什么？难道你真的想动态改变文本的TextView的对象，当用户点击一个按钮？你当然可以这样做，如果你有一个原因，但是，如果文本是静态的，它通常设置在main.xml中的文件，像这样的：

What are you trying to do? Do you really want to dynamically change the text in your TextView objects when the user clicks a button? You can certainly do that, if you have a reason, but, if the text is static, it is usually set in the main.xml file, like this:

<TextView  
android:id="@+id/rate"
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/rate"
/>

字符串@字符串/率是指在你的strings.xml文件，看起来像这样的条目：

The string "@string/rate" refers to an entry in your strings.xml file that looks like this:

<string name="rate">Rate</string>

如果你真的想以后更改本文中，您可以通过使用尼古拉的例子做 - 你会得到一个参考的TextView利用中main.xml中定义的ID，像这样的：

If you really want to change this text later, you can do so by using Nikolay's example - you'd get a reference to the TextView by utilizing the id defined for it within main.xml, like this:

final TextView textViewToChange = (TextView) findViewById(R.id.rate);
textViewToChange.setText(
    "The new text that I'd like to display now that the user has pushed a button.");

这篇关于如何更改在Java code TextView的价值？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！