As I wrote a few weeks ago, we were working on integrating Google Drive into our Tikkun app. We had all of the key capabilities working for the Android version of the app, and were next diving into doing the same for iOS. Since we are relatively new to iOS and Swift programming, we are always on a learning curve as we start the next part of the project there. And, of course, the way that Android/Java accesses Google Drive differs significantly from the way that iOS/Swift does.
In particular, although calls to Google Drive occur asynchronously, they are handled in Android/Java in a way that basically results in things happening in order, without having to do any special programming. In iOS/Swift, the asynchronous nature of the interactions must be accounted for by the programmer. This led to learning how to use PromiseKit, a third-party Swift library for simplifying asynchronous code.
We are almost done now with bringing the iOS app’s functionality up to the same level as the we already had in the Android app. Next up: designing how user files should be represented in the app, and then how to arrange the user interface to simplify the sharing of files.