在 Android Studio 中重命名 package 和重命名目录有什么不同？

Question

I add a new module for a project in Android Studio. I hope to rename package, so I select Refactor -> Rename item , you can see Image 1.

I find that the Image 2 is displayed to let me select between Rename package and Rename directory , I'm confused.

I think that the name of package and the name of directory are matched, I think that the name of directory will be changed when I change the name of package, and the name of package must be changed when I change the name of directory.

And more, the Image 3 is displayed when I add a new module for the project, I don't know what Application/Library name mean, I can't find the string My Library in whole project.

Image 1

Image 2

Image3

Added Content

To oiyio: Thanks!

But the file string.xml file isn't be created automatically when I create a new module for the project, so I can't find the string My Library in string.xml .

You can see the tree structure with Image 4, and you download the code at https://www.dropbox.com/s/jwhjb7vq4hfxfi8/MyTest.zip?dl=0 for test.

Image 4

Answer 1

Rename package will rename all the files which have package name imported with the new package name and rename directory will rename the directory folder and will not change the package name which is imported in each file.

Answer 2

You can use the following way to rename full package name Alternatively, you can use the following trick to rename a package:

1. Create a new package by right clicking on the Java folder → New → Package and give it a name what you want.
2. Then, select and drag all your classes to the new package. Android Studio will refactor the package name everywhere.
3. Delete the old package.
4. Edit the package name in AndroidManifest.xml and build.gradle file to the new package.

Let me answer your last question, When I tested by creating a new module -> Android Library, as shown in your picture 3, My Library is added to strings.xml. If there are 2 app_name string available as shown below, the one in the app module overrides the one in the library module