Add functionality to refresh button.

[pandyah5]

Hitting refresh should update the users live location and alter the safety message accordingly

[pandyah5]

This is much more complicated than I initially believed. Our current code has a lot of side-effects and the location data is not tracked/remembered. Hence, when we change configuration/activity/refresh the screen, the new location data is NOT propagated to the UI.

PS: The old method of using XML could have easily solved our need but hey the compose method is like a bitter pill that is good for long-term maintenance 🥲

[pandyah5]

Upon doing some googling and watching tutorials, I have come up with the following plan:

• [x] Develop an MVVM (Model-View-ModelView) architecture for handling location data
• [x] Creating a data repository for storing CSV data
• [x] Creating shared viewModel so that the location data is available to ALL activities in the app.
• [ ] Using viewModel makes our app data resilient to configuration changes, but we will need to integrate our viewModel with savedStateHandle to survive accidental process shutdown.

[pandyah5]

Source for more info on viewModels:

• Documantation: https://developer.android.com/topic/libraries/architecture/viewmodel
• Video tutorial: https://www.youtube.com/watch?v=9sqvBydNJSg&t=6s&ab_channel=PhilippLackner

[pandyah5]

The resolution is as follows:

• I have implemented an automatic refresh functionality, by creating location as a LiveData class
• There is a looper setup to fetch updated location every minute
• We have tried to integrate this with a viewModel for automatic UI updates, however, there is a lot of scope for optimization!

[pandyah5]

Fixed in 89481241c777a8b6764e2f92476fc395edcc3831