Flutter downloads (and uses?) old Android SDK build tools

If only latest Android SDK build tools are installed (currently 29.0.2), Flutter will force the download of an old version (28.0.3) to run/build an app (both debug and release modes).

Steps to Reproduce

Remove all build tools versions
Install only latest build tools version (currently, 29.0.2)
flutter run

Flutter Doctor

[√] Flutter (Channel master, v1.10.7-pre.53, on Microsoft Windows [VersiÃ³n 10.0.18362.356], locale es-ES)
    • Flutter version 1.10.7-pre.53 at C:\src\flutter
    • Framework revision f11c34109c (77 minutes ago), 2019-09-27 10:46:45 +0200
    • Engine revision 18bc0b2596
    • Dart version 2.6.0 (build 2.6.0-dev.3.0 403c4af720)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at C:\Users\Cristian\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.2
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 39.0.3
    • Dart plugin version 191.8423
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] Connected device (1 available)
    • Pixel 3 XL • 89PY09NNV • android-arm64 • Android 10 (API 29)

• No issues found!

@jonahwilliams

Is this a problem for you?
@jonahwilliams is there a reason for this?

Not really, just noticed it while freeing space on my computer, because as I specified SDK version 29, I expected Flutter to use it to build the app, but instead it redownloaded version 28. Now that version 29 is out and stable, I think Flutter should target it.

Thanks for bringing this to our attention

I have same problem. I only need build tools 29.0.2 instead of using 28.0.3
So, any update about this issue ? when the flutter team target this build tools to 29.0.2

@jonahwilliams

@jonahwilliams do you know anything about the plan on this?

This is not a very good thing. I use a machine with small but efficient ssd storage so I deleted old android platforms so save space. When I started building, flutter downloaded the platforms again...

Appear to have come across this problem as well. Had a plugin using Cirrus CI to build the example apps as part of the CI process I've setup. The apps and plugin have the compile and target SDK version set to 29. Builds end up failing (e.g. see https://github.com/MaikuB/flutter_appauth/pull/59/checks?check_run_id=303940871). Contacted Cirrus CI that then found this issue on GitHub

I have same problem.

Same issue here. Any news on this?

Gradle will download whatever build tools it requires - Flutter does not request these. I can't really provide any insight into why they are being downloaded, but it is possible some transitive dependency requires them for some reason.

@joaoatgoogle

@joaoatgoogle might be because of

flutter/packages/flutter_tools/templates/plugin/android-java.tmpl/build.gradle.tmpl

Line 25 in 4d404da

compileSdkVersion 28

Thats a template file though, it is only meant to be a default. If plugins are compiling against 28, you'll need to download that tool regardless

@jonahwilliams

@jonahwilliams is there any easy way to find out which plugins are targeting which sdk? I'd like to determine which plugin is forcing the download of the old android sdk as it's slowing down my CI build, and I may be able to bump that plugin version etc.

Installed the stable version of flutter today. I'm still facing this issue

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

For future readers: see my comment in a different issue

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Flutter downloads (and uses?) old Android SDK build tools #41462

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Flutter downloads (and uses?) old Android SDK build tools #41462

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escamoteur commented on Sep 27, 2019

Zazo032 commented on Sep 27, 2019

escamoteur commented on Sep 27, 2019

budioktaviyan commented on Oct 8, 2019

escamoteur commented on Oct 23, 2019

solokingjec commented on Oct 25, 2019

MaikuB commented on Nov 27, 2019

AttSee commented on Dec 9, 2019

vincentderidder commented on Jan 19, 2020

jonahwilliams commented on Feb 4, 2020

fkorotkov commented on Feb 4, 2020

jonahwilliams commented on Feb 4, 2020

andy-g commented on Mar 4, 2020

SatyanarayanaGhadiyaram commented on Mar 15, 2020

lock commented on Apr 4, 2020

bartekpacia commented on Mar 30, 2024

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