如何从任何地方获取包名称? [英] How to get package name from anywhere?

问题描述

我知道 Context.getApplicationContext() 和 View.getContext()，通过它我实际上可以调用Context.getPackageName() 以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.

如果我从一个 View 或 Activity 对象可用的方法调用它们，它们就可以工作，但是如果我想从一个完全独立的类中找到包名没有 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

一个想法是在您的主要活动中有一个静态变量，实例化为包名称.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:

全局到类:

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.

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