Java Android Activity for Event Editing

I need an Android activity window written in Java to edit event details.

The editing capabilities should include:
- Event Date and Time
- Event Location
- Event Title
- Event Description

For the input fields, I require:
- Text fields for the event title and description
- Date and time pickers for the event's schedule
- A location text field to edit location details.

The activity should pre- populated with data. An event should have an id, but not visible to user.

Please send an example android studio project so that I can test your code.

Some of these fields will need validation while others won't. The ideal freelancer for this project should have:
- Extensive experience with Android development
- Proficiency in Java
- A solid understanding of input field validation and restrictions.