Rooper-Image-Library

Features:

• Downloading images with Caching mechanism

Working:

• cachedImages (declared in the CachingUtil)is used to cache the images downloaded. This is cleared in 2 cases - 1. When the application is low on memory 2. OnDestroy of the last activity - which in this case is ImageLoadingActivity

Add jitpack in your root build.gradle at the end of repositories:

allprojects {
  repositories {
    ...
    maven { url 'https://jitpack.io' }
  }
}

Add the dependency

dependencies {
  implementation 'com.github.rohegde7:Rooper-Image-Library:1.0.1'
}

Tech and Architecture:

• We have used Kotlin as the primary programming language
• The feature is shipped as a library
• The app module takes advantage of MVVM architecture
• Activity, ViewModel, Repository, LiveData, ObservableFields, DataBinding are the basic building blocks of this architecture
• All the UI related work like showing Toast, starting a new activity, showing the progress bar, etc is done in the Activity.
• Business logic is written in the ViewModel. Also the observable fields are present in the ViewModel which are observed from the XML when we use data binding.
• All API calls, DB calls, File operation and major calculation or operation happen from within the repository.
• It's a 1 way reference flow from Activity -> View Model -> Repository. For ViewModel/Repository to communicate back in the chain we use live data which is observed by the concerned entity.
• Constraint Layout has been used to design the UI

Libraries used:

• Retrofit2
• RxJava/RxAndroid
• Gson