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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.

 
Solution:
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.

 
 
Mobile

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