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Android Studio: error package name is not set to a valid package name
I want a new page create Android Studio by using the activity Gallery. Here comes a naming error, which prevents me from creating the page.
Error message: package name is not set to a valid package name
When you create a new Android page (activity) in Android Studio error message indicates that the package name is not valid.

You have to change the view of your project on packages.
Go to packages: In the project window, a changing field, with which you can switch the view on packages is up.
Then if you click on the folder: layout-> right mouse button >new > activity-> Gallery

Then in the dialog: new Android activityAdd an activity to mobile >on empty activity
After that, no error is more available in the dialog view.



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