java 是否需要在 onActivityResult() 中使用 super.onActivityResult()？
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Is there a need to use super.onActivityResult() in onActivityResult()?
提问by Prizoff
Which one is better and why?
哪个更好，为什么？
This one:
这个：
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
...
}
or this:
或这个：
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
// do not call super.onActivityResult()
...
}
采纳答案by hcarver
The first one is better.
第一个更好。
It's more consistent with other event functions in the ActivityAPI, it costs you nothing (the code you're calling does nothing at the moment), and it means you don't need to remember to add the call in the future when the behaviour of the base class changes.
它与ActivityAPI中的其他事件函数更加一致，它不会花费您任何费用（您正在调用的代码目前什么都不做），这意味着您不需要记住在以后的行为发生时添加调用基类发生变化。
Edit
编辑
As Su-Au Hwang has pointed out, my prediction about the behaviour of the base class changing in the future has come true! FragmentActivityrequiresyou to call the method on super.
正如 Su-Au Hwang 所指出的，我对未来基类行为变化的预测已经实现了！FragmentActivity要求您在 上调用该方法super。
回答by Su-Au Hwang
You should call super.onActivityResult if you are using FragmentActivity from the support package (also SherlockFragmentActivity). Otherwise it isn't necessary, however i'd just plug it in there for the sake of it. Check the source of FragmentActivity (no onActivityResult is not empty).
如果您正在使用支持包（也是 SherlockFragmentActivity）中的 FragmentActivity，您应该调用 super.onActivityResult。否则没有必要，但是我只是为了它而将它插入那里。检查 FragmentActivity 的来源（没有 onActivityResult 不为空）。
回答by wsanville
Unless you have multiple subclasses of Activitywhich depend on it in your application, it doesn't look like calling super.onActivityResult()is needed, since the implementation of onActivityResult()is empty (I checked API level 15).
除非您Activity的应用程序中有多个依赖于它的子类，否则看起来super.onActivityResult()不需要调用，因为 的实现onActivityResult()是空的（我检查了 API 级别 15）。
回答by Squonk
You can answer this yourself by looking at the source code for Activity.
您可以通过查看Activity的源代码自己回答这个问题。
Basically it's implementation of onActivityResult(...)looks like this...
基本上它的实现onActivityResult(...)看起来像这样......
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
}
...so does nothing.
......所以什么都不做。
回答by Mike
Although it seems the default implementation is empty, it's possible that in future updates that might not always be the case. I would recommend using it
尽管默认实现似乎是空的，但在未来的更新中可能并非总是如此。我会推荐使用它
