如何从任何地方获取包名?

问题描述

我知道 Context.getApplicationContext() 和 View.getContext()，我可以通过它实际调用Context.getPackageName() 检索应用程序的包名.

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.

如果我从 View 或 Activity 对象可用的方法调用它们，但如果我想从完全**的类中找到包名称，它们会起作用如果没有 View 或 Activity，有没有办法(直接或间接)做到这一点?

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

一个想法是在你的主要活动中拥有一个静态变量，实例化为包名.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.

您必须在主活动的 onCreate() 方法中对其进行初始化:

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

类全局:

public static String PACKAGE_NAME;

那么..

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

    PACKAGE_NAME = getApplicationContext().getPackageName();
}

然后您可以通过 Main.PACKAGE_NAME 访问它.

You can then access it via Main.PACKAGE_NAME.