Android Studio gradle's "calculate task graph" takes too long

Question

When building app in Android Studio, it takes too long (besides I use offline mode, latest gradle, etc).

I investigate, and see progress of each task, where most time is spent in Calculate task graph item.

Every single gradle task that I choose from Gradle tool window spend at least 9 seconds in this Calculate task graph.

How can I speed up this task, and why it takes so long, when other gradle tasks are usually cached (UP-TO-DATE)? I could possibly build much faster, but each app build adds 10 seconds, which is killer of productivity.

Any advice is welcome. Thanks.

Answer 1

Inside "Calculate task graph" phase Gradle also appears to be resolving dependencies (not sure why this isn't in its own separate time slot, it could be a bug). That means that you can follow Gradle's guide to dependency resolution performance.

What helped in my project:

• Remove any unused repositories (removing mavenLocal() made the biggest difference)
• Remove any SNAPSHOT libraries and repositories that contain snapshots (use stable versions instead)
• Interestingly enough, disabling Android Plugin's jetifier (set android.enableJetifier=false in gradle.properties) seems to also help significantly but of course that means that you cannot depend on libraries that did not migrate to AndroidX yet. It appears this is a bug in jetifier.