For more on that, check out our guide to Android development for beginners. For the purposes of this Java tutorial, it may be easier to write your code directly into a Java compiler app.

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Today, Android tutorials typically provide examples in both Java and Kotlin, though there is still slightly more support for Java developers (if only because many old posts have yet to be updated).

To demonstrate multi-touch, we’re going to build a simple image viewer application that lets you zoom in and scroll around an image. See Part 1 for a screenshot of the finished product.

But one look at the UI on the Android device and you might think this is anything but simple. The truth is that [Kerimil] didn’t spend forever learning Java and programming the app. Instead he ...