[SOLVED] android Java graph JAVA & Android APP

JAVA & Android APP
You are to design and implement a simple, attractive, and easy-to-use Android application to satisfy the follow goals. Your design must be flexible enough to allow developers to extend or migrate it.
To assist in understanding the emotional states and triggers of individuals and groups, we want a mobile application that allows one to post, track, and share their moods.
For university students or staff that participate in using the app, this could allow a clearer picture of their experiences, perceptions, and mental well-being in the face of challenges in academic life.
Moods
US 01.01.01
As a participant, I want to add a mood event to my mood history, each event with the current date and time, a required emotional state, optional reason, and optional social situation.
US 01.02.01
As a participant, I want consistent emoticons and colors to depict and distinguish the emotional states in any view.
US 01.03.01
As a participant, I want to view a given mood event and all its available details.
US 01.04.01
As a participant, I want to edit the details of a given mood event of mine.
US 01.05.01
As a participant, I want to delete a given mood event of mine.
Other Mood Details
US 02.01.01
As a participant, I want to express the reason why for a mood event using a brief textual explanation (no more than 20 characters or 3 words).
US 02.02.01
As a participant, I want to express the reason why for a mood event using a photograph. US 02.03.01
As a participant, I want to specify the social situation for a mood event to be one of: alone, with one other person, with two to several people, or with a crowd.

Deliverables
1. Code Base of Prototype:
Your source code will be inspected. The code should conform to some consistent coding convention. Your prototype should provide something tangible to the user, supporting about half the requirements. Maintain the source code in your source repository.
2. Code Documentation:
For each source code file, you should have a brief introductory comment describing its purpose or role within the application or a design pattern, as well as any currently outstanding issues. Provide Javadoc interface documentation for your model classes and their public methods (at least).