v1.2

Changes from version 1.1:

• Introduced Dagger to manage dependencies.
• Added in-app purchase option allowing users remove ads using Google Play Billing library.
• In WatchlistFragment: switched from using a RecyclerView to using a DragLinearLayout.
  • Using a RecyclerView to manipulate objects whose contents change dynamically upon user input was very problematic, caused many issues/bugs, and made the code very messy.
  • RecyclerView is overkill for lists that will realistically be very small.
• Upgraded theme to MaterialComponents.
• Change scrolling library from MaterialScrollBar to RecyclerBubble.
• Added Spanish translation.
• Fix issues relating to input validation and formatting.
• Added intuitive transition animations for better UX.
• Removed the Fragment to see the source code as it's irrelevant/confusing to most users.
• Added a short app tutorial with TapTargetView so new users can discover hidden features.

v1.1

Changes from version 1.0:

• Refactored entire project from Java to Kotlin.
• Use of MVVM instead of god classes in Activities and Fragments.
• Migrated from Volley to Retrofit as it has a larger community and is more popular.
• Change the database schema
  • Before: The selected currencies were kept in a separate table.
  • Now: All currencies are kept in the same table. The selected currencies are the filtered currencies with the property of isSelected being ‘true’.
• Migrated from Gson to Moshi as it is more recommended by the Kotin Android community and integrates better with other Square libraries such as Retrofit.
• Introduced Coroutines for expensive tasks and database access calls.
• Changed the theme to an AMOLED black style to maximize battery saving.
• Using Jetpack’s Navigation component instead of maintaining a Fragment manager.
• Use of ConstraintLayout for views with complex nestation for more efficient view rendering.
• Use of DiffUtil for more efficient adapter changes instead of manual calls to the notify methods from the Adapter class.
• Remove interstitial ads to enhance user experience.
• Switched from presenting the conversions in an EditText using the system keyboard for input to using a TextView with a custom keyboard.
  • Some things were very difficult, ugly, buggy, or downright impossible to do with the EditText + system keyboard. These include:
    • Setting hint values dynamically in accordance to the focused EditText view.
    • Formatting the contents of the EditText fields with a grouping separator.
    • Validating the input.

v1.0

This is the first release of the app using Java. Future plans are to publish another release using Kotlin alongside Android architecture components.