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问题描述

我期待在从Android开发者网站上的记事本教程。我有一个关于重载函数调用超一流的活动问题。例如,

I'm looking at the Notepad tutorial from the Android developer's site. I have a question about overridden functions calling the super-class of activities. For example,

public class Notepadv3 extends ListActivity {
    ...

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    menu.add(0, INSERT_ID, 0, R.string.menu_insert);
    return true;
    }
}

什么是在 super.onCreateOptionsMenu()的地步?我看着,发现这样的解释:

What's the point of the super.onCreateOptionsMenu()? I looked at the developer's site and found this explanation:

呼叫super.onCreateOptionsMenu(菜单),所以原来的菜单项的创建,然后用menu.add添加新的菜单项()。

但原来的菜单项目有哪些?

But what original menu items are there?

同样,有什么其他的超点。(overridden_​​function),如 super.onCreateContextMenu

Similarly, what's the point of other super.(overridden_function), such as super.onCreateContextMenu?

推荐答案

活动有多项业务,他们在其整个生命周期内完成 - 其中一些是家里打扫(垃圾收集),UI的东西,等等。

Activities have a number of operations they perform throughout their life cycle - some of these are house cleaning (garbage collection), UI stuff, etc.

据我所知, super.onCreateContextMenu()没有被调用,像不像方法的onCreate onResume 等等。

As far as I know, super.onCreateContextMenu() doesn't have to be called, unlike methods like onCreate, onResume, etc.

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10-20 15:49