的setText（的getString（R.strings.whatever）或的setText（R.strings.whatever）？ [英] setText(getString(R.strings.whatever) or setText(R.strings.whatever)?

问题描述

这两个工作，很明显，如果你开始串联，你需要得到的字符串，以避免显示一个int。

Both work, obviously if you start concatenating you'll need get string in order to avoid displaying an int.

问：这是最优雅或推荐使用

Question: which is the most 'elegant' or 'recommended' to use?

感谢您

推荐答案

第二种方法是更优雅，因为内部的的TextView （或任何查看级）会做的越来越字符串为您指定的资源的工作。

The second approach is more elegant, since internally, the TextView (or whatever View-class) will do the job of getting the String for your specified resource.

放生组件做内部工作总是preferred。此外，它是更短，更具有可读性。

Letting components do the internal work is always preferred. Also, it is shorter and more readable.

关于我谈到了内部：如果您对机器人源 - code一看，你可以看到的setText（INT） -method的是，的TextView <一个href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/2.2_r1.1/android/widget/TextView.java#TextView.setText%28int%29"相对=nofollow>这样的实现：

About the internals I talked about: If you have a look on Androids source-code, you can see that the setText(int)-method of TextView is implemented like this:

public final void setText(int resid) {
  setText(getContext().getResources().getText(resid));
}

所以，它在内部使用了上下文级获得的资源ID字符串。现在，如果你看看的getText（） - 方法（这也来自于上下文级），你可以看到，它<一个href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/2.1_r2/android/content/Context.java#Context.getString%28int%29"相对=nofollow>实施方式相同：在

So, it internally uses the Context-class to get the string from the resource-id. Now, if you look at the getText()-method (which also comes from the Context-class), you can see that it is implemented the same way:

public final String getString(int resId) {
  return getResources().getString(resId);
}

因此​​，对于性能和可靠性的原因，这都没有区别。尽管如此，它短小，可读性更强：D

So for performance or reliability reasons, it makes no difference. Still, it is shorter and more readable :D

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