由网友(bilibili最新昵称大全 哔哩哔哩取什么名字好)分享简介：我想在我的Andr​​oid应用程序扩展应用。我已经做到了这一点，这样我已经创建了一个名为MyApplication的扩展应用程序对象，并把它添加到清单。I'd like to extend Application in my Android app. I've done this such that I've c...

我想在我的Andr​​oid应用程序扩展应用。我已经做到了这一点，这样我已经创建了一个名为MyApplication的扩展应用程序对象，并把它添加到清单。

I'd like to extend Application in my Android app. I've done this such that I've created an extended Application object called MyApplication and added it to the manifest.

我现在想添加一些getter和setter方法​​来保存一些信息。它看起来像我需要应用程序上下文传递给它不包含任何上下文类。

I'd now like to add some getters and setters to hold some information. It looks like I'll need to pass the application Context to any classes which do not contain a Context.

举例来说，假设我创建了一个类叫MyObject的（在它自己的Java文件）：

For example, say I create a class called MyObject (in its own java file):

public class MyObject {
  public void doStuff() {
    // do stuff
  }
}

我怎么可能从doStuff访问所有MyApplication（）？它看起来像我需要的应用程序上下文传递给MyObject来。这是典型的？是否有泄漏的可能？

How might I access MyApplication from doStuff()? It looks like I'll need to pass the application Context to MyObject. Is this typical? Is there a possibility of leaks?

此外，为确保我清楚，将所有MyApplication（和内部变量）住在整个应用程序的生命周期，还是没有？无论哪种方式是罚款。我只是想确保我考虑到这一点，如果我需要。

Also, to make sure I'm clear, will MyApplication (and the variables within) live throughout the application's lifecycle, or not? Either way is fine. I just want to make sure I account for this if I need to.

最后，一些示范来源的任何链接，展示一下不同的东西将AP preciated扩展应用是很有用的。

And lastly, any links to some example source to show what different things extending Application is useful for would be appreciated.

推荐答案

据我所知，还有上下文传球也不例外在Android开发。好了，如果不是这样，我是做错了。

As far as I know, passing along contexts is not exceptional in Android development. Well, either that or I'm doing it wrong.

我不知道，如果你需要这种回答与否，而是来自一个背景下，您可以访问应用程序这样的对象：

I'm not sure if you needed this answered or not, but from a context, you can access the Application object like this:

((MyApplication) context.getApplicationContext()).getMyGlobalVariable();

您所有MyApplication 类应该生活在整个应用程序生命周期，是的。

Your MyApplication class should live throughout the entire application lifecycle, yes.

另外，请查阅this回答。