I would advise anyone doing this specialization, to take the Java for Android first, then do the Engineering Maintainable Android apps, as its only in the Engineering Maintainable Android apps that there is an optional coursework to create and test a very simple app for the first time. All the other MOOCs optional courseworks start from very complex pre-existing app examples. I was able to complete these courseworks but I didnt really understand all the surrounding code that did a lot of important UI stuff, or the JUnit test. Its good to be forced to make a simple app and get used to JUnit from day 1. I did not take this route, but I wish I had.
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