Android Sample App Consolidation and Kotlin Conversion

[handstandsam]

It is confusing having two sample Android Applications. This is a step in the right direction to move everything to Kotlin and cleanup the codebase. There will still be more iterations that would make this ideal, but it's a good step forward.

Completed:

• Removed viewBinding
• Convert Original Sample App to Kotlin
• Use local.properties method of setting the APP_KEY for the original sample app
• Move over the code from the new sample app into the Android sample app.
• Migrated AsyncTasks to Kotlin Coroutines
• Fixed layout on smaller screens

[rharter]

This looks reasonable to me.

Not a blocker, but I think the example could be easier for users to use if everything wasn't named Dropbox*, since that makes it really hard to peruse and understand what is part of the Dropbox API and what's part of the example (i.e. DropboxApi isn't actually part of the Dropbox SDK 😆 ). Perhaps making the sample app Sample or something could help.

[alisonthemonster]

Looks good to me! Thank you!

[handstandsam]

Good call @rharter . I updated the naming to be clear. Also I moved all the *Task.kt (async task leftovers) to the DropboxApiWrapper.kt file as a metho

d. 😄