Problem: As female college students, we often do not feel safe traveling at night and simply rely on our gut instincts or by word of mouth regarding which areas to avoid.
Solution: To solve this problem, our team developed Safer, an android app that displays nearby dangers in real time. Users are able to view all dangerous activities that have occurred near their location. Anyone in the community can help to alert others by signing into Safer and creating a danger post. Each posted danger has a details page with the date, time, location, description, and respective image or video.
Watch Presentation Video Here https://www.youtube.com/watch?v=We2zheGOxu8&feature=youtu.be
- Category: Safety
- Mobile: This application will be a mobile solution.
- Story: Students and local residents are now aware of crimes or dangers nearby. They have more control over their own safety.
- Market: This app will be primarily targeted towards students that attend college.
- Habit: Students will most likely use this app at night if they are walking alone, or during the day when they are notified of a nearby danger.
- Scope: This project will enable students to see nearby dangers and be able to alert others of dangers they have witnessed.
- Demo Video - User Stories
Required Must-have Stories
- Users can log in to post a danger notice
- All nearby dangers are displayed on a map
- An aggregated list of dangers can be viewed
- Each danger has a detailed page with the respective image or video
Optional Nice-to-have Stories
- Navigation to safe locations such as police stations, hospitals, or other shelters
- Login Page
- Map with pinned danger locations
- Filter/Toggle danger types
- Main Activity Page/Map
- Map with pinned danger locations
- Filter/Toggle danger types
- Danger Posting Page
- Address autocompletion
- Get address by pin on map
- Latitude/Longitude information
- Post Pictures and Videos
- Post with categories
- Danger Viewing Page
- Recycler view, with each row showing address, time, description
- Danger Detail Viewing Page
- Imageview / videoview
- Description view
- Comment view
- Comment input
- Profile Page
Tab Navigation (Tab to Screen)
- Map
- Post Danger
- Nearby Dangers
Flow Navigation (Screen to Screen)
- Welcome Page
- Main Map Page
- Main Map Page
- Nearby Danger Page
- Post Danger Page (logged in)
- Login Page/Register Page
- Nearby Danger Page
- Danger Details Page
- Danger Details Page
- Edit Danger Page
- Post Danger Page
- Danger Details Page
- Profile Page
- Main Map Page
Digital Wireframe -> https://github.com/ZhouXing19/Safer/tree/master/design/digital_wireframe.pdf
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Danger Schema
Property Type Description category String danger's category description String danger description id String unqiue id of danger imageUrl String image url from Firebase storage latitude double latitude of danger location String location of danger longitude double longitude of danger time DateTime date and time this danger occured title String title of danger userId String unique id of user that created this danger post -
User Schema
Property Type Description dangerid String id of danger the user posted email String user's email firstName String user's first name id String unique id of user imageUrl String user's profile image lastName String user's last name password String user's password
- Main Map Activity Screen
- (Read/GET) Get all dangers from Firebase
DatabaseReference ref = FirebaseDatabase.getInstance().getReference().child("Danger"); // Attach a listener to read the data at our posts reference ref.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { for (DataSnapshot snapshot: dataSnapshot.getChildren()) { DangerHelperClass danger = snapshot.getValue(DangerHelperClass.class); } } }
- (Read/GET) Get all dangers from Firebase
- Create Danger Screen
- (Create/POST) Create a new danger
- (Update) Update a danger
- (Delete) Delete a danger
- Profile Screen
- (Create/POST) Add a new user to the database
- (Read/GET) Get user's information
- (Update/PUT) Update user's profile image
- Java
- Google Map API
- Firebase
- Adobe XD
- Joda Time
- Developed in AndroidStudio 4.0.1
- Tested in Pixel 2 API 30
- A fake location simulator is needed in the AVD
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