Stack

• The project is 100% Kotlin
• MVVM architecture have been followed.
• Hilt, Navigation compononents, Work Manager, Flows & Coroutines have been used

Build Instructions

• Clone the project and add it in Android Studio.
• Sync the project files by clicking on "Sync gradle files" button

Run Instructions

• Run the app on an emulator or a personal device by clicking on the run button in the top toolbar
• We need to provide PACKAGE_USAGE_STATS permission to use the app.
• Please refer to the screenshots in the /screenshots folder to check the UI

Assumptions or design decisions taken

• We needed to show a UI element from background. Android restricts on showing UI element from background. We had two options - System alert or push notifications. I decided top go ahead with the push notification approach because system alerts is a sensitive permission and user is more used to seeing push notifications for alert.
• Currently, if time limit set, the app checks in every 15 minutes for any app which has crossed the time limit. The 15 min time limit is an Android limitation if we want to cater to users on Android 12 and above. I have tried using a hack to listen for every 1 minute in case we have an which has crossed the limit but the result has been flaky.
• All the modules, packages and classes are implemented keeping testing in mind.

Screenshots

1.List of apps along with their respecting time usage for the day

2.Add/Edit time limit for an app

3.Alert when app is used over the set limit