Android 中的“一般”功能放在哪里？

Question

I want to write a general function for my project that will be used across many different files and I don't want to have it in a particular class.

Where am I supposed to put it?
Inside a new package as a class?

Is this the only option?

Answer 1

Create a new package as util and create all common methods in there, for example:

Create package as com.xyz.util .

Create a class as Util in above package.

Then write your all common methods in this Util class.

You can write static methods in this class and access them as Util.method_name(); .

Answer 2

In Java every method lives in a class. So yes, its the only option. A common approach is to use a utility class containing only static methods. You can use it from everywhere without creating any instances.