我知道Context.getApplicationContext()和View.getContext(),通过它我可以真正称之为Context.getPackageName()检索应用程序的包名称

I am aware of the availability of Context.getApplicationContext() and View.getContext(), through which I can actually call Context.getPackageName() to retrieve the package name of an application.

他们的工作，如果我从一个方法调用到一个查看或活动对象是可用的，但如果我想从一个完全独立的阶级，没有查看或活动查找软件包名称，有没有办法做到这（直接或间接）？

They work if I call from a method to which a View or an Activity object is available, but if I want to find the package name from a totally independent class with no View or Activity, is there a way to do that (directly or indirectly)?

推荐答案

这是想法是在你的主要活动一个静态变量，实例化是包名。然后，只需引用该变量。

An idea is to have a static variable in your main activity, instantiated to be the package name. Then just reference that variable.

您必须初始化它的主要活动的的onCreate（）方法：

You will have to initialize it in the main activity's onCreate() method:

全球的类：

public static String PACKAGE_NAME;

然后..

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    PACKAGE_NAME = getApplicationContext().getPackageName();
}

您可以然后通过 Main.PACKAGE_NAME 访问它。

You can then access it via Main.PACKAGE_NAME.