两个XML元素具有相同的ID [英] Two XML elements with same id

问题描述

我想修改两个TextViews在完全相同的方式。我想我可以给他们相同的ID，用findViewById（）和的setText（）方法改变这些TextViews两行。但似乎只有一个TextView的改变。

I'm trying to modify two TextViews in exactly the same way. I thought I can give them same id and with findViewById() and setText() methods change those TextViews in two lines. But it seems only one TextView is changed.

有没有办法做到这一点？ 或者我必须做出不同的ID的每一个元素，通过findViewById获得每一个元素（）方法，并设置它的文本？

Is there a way to do this? Or I have to make different ids for every element, get every element by findViewById() method and set it's text?

推荐答案

查看ID是纯整数，所以你可以简单地有要更改ID数组。例如：

View IDs are plain integers, so you can simply have an array of ids you want to change. For example:

int[] ids = { R.id.text1, R.id.text2, ... };
for (int id: ids) {
    TextView tv = (TextView) findViewById(id);
    tv.setText("Hello, World!");
}

当然，这将是最好有 IDS 为静态final类成员。即：

Of course, it would be best to have ids as a static final class member. I.e.:

public class MyActivity extends Activity {
    private static final int[] textViewIDs = {
        R.id.text1,
        R.id.text2,
        ...
    }
    ...
}

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