Im sure my answer / comment on What is Gradle in Android Studio? will get downvoted into oblivion with short-shrift fairly soon. (Maybe deservedly).
But I’ll make it here :
At the risk of being discursive I think behind this is the question of why the Android Studio / Gradle experience is so bad.
Typical Clojure experience :
- download project with dependencies listed in project.clj.
- Leiningen gets the dependencies thanks to Clojars and Maven.
- Project compiles.
Typical Android Studio / Gradle experience :
- “Import my Eclipse project”.
- OK project imported.
- Gradle is doing it’s thang … wait … wait … wait … Gradle has finished.
- Compile … can’t compile because I don’t know what an X is / can’t find Y library.
I’m not sure this is Gradle’s fault exactly. But the “import from Eclipse project” seems pretty flaky. For all of Gradle’s alleged sophistication and the virtues of a build-system, Android Studio just doesn’t seem to import the build dependencies or build-process from Eclipse very well.
It doesn’t tell you when it’s failed to import a complete dependency graph. The Android Studio gives no useful help or tips as to how to solve the problem. It doesn’t tell you where you can manually look in the Eclipse folders. It doesn’t tell you which library seems to be missing. Or help you search Maven etc. for them.
In 2016 things like Leiningen / Clojars, or node’s npm, or Python’s pip, or the Debian apkg (and I’m sure many similar package managers for other languages and systems) all work beautifully … missing dependencies are thing of the past.
Except with Android. Android Studio is now the only place where I still seem to experience missing-dependency hell.
I’m inclined to say this is Google’s fault. They broke the Android ecosystem (and thousands of existing Android projects / online tutorials) when they cavalierly decided to shift from Eclipse to Android Studio / Gradle without producing a robust conversion process. People whose projects work in Eclipse aren’t adapting them to AS (presumably because it’s a pain for them). And people trying to use those projects in AS are hitting the same issues.
And anyway, if Gradle is this super-powerful build system, why am I still managing a whole lot of other dependencies in the sdk manager? Why can’t a project that needs, say, the ndk specify this in its Gradle file so that it gets automatically installed and built-against when needed? Why is NDK special? Similarly for target platforms? Why am I installing them explicitly in the IDE rather than just checking my project against them and having this all sorted for me behind the scenes?