Android上的ApplicationInfo静态方法

Question

Not that complicated of a question today:

Is there a way to get the ApplicationInfo in a static method?

Answer 1

No.

To get to ApplicationInfo you need instance of Context , which you get via and instance of Application or Activity .

So, normally you'd do:

ApplicationInfo appIngo = this. getPackageManager().getApplicationInfo("your.app.package.name", GET_META_DATA) 

where this is and instance of Context, either Activity, Service or Application.

Answer 2

You can inherit your your application class from Application

public class TestApplication extends Application

create private static instance variable inside this class

private static TestApplication instance = null;

instantiate it in onCreate method:

instance = this;

write access method

public static TestApplication getInstance() {
        return instance;
    }

From any place you can call

TestApplication.getInstance().getApplicationInfo()

Same way you can get ApplicationContext.