How to fix sudden and generic Gradle Project Sync Failed error

Question

I've been developing an Android app for a few months. When I left work last night, everything was fine, but when I returned this morning I had to restart my computer and therefore Android Studio. Now when I attempt to build the project I get the error "Failed to resolve: com.android.support", along with "Grade project sync failed. Basic functionality (e.g. editing, debugging) will not work properly."

I've tried updating to the latest Android Studio version, updating Gradle to the latest version (I used the table in this thread to properly sync the plugin/gradle versions), rolling back to a working version via Git, and switching the google() repository to

maven {
    url 'https://maven.google.com'
}

Here's a screenshot of the Build view showing the error.

And here's a screenshot of the app build.gradle file

"Failed to resolve: com.android.support" has proven to be too generic to find a solution via Google.

@AshokKumar I solved the problem, see my answer if you're interested. Thanks for your help. — possum_pendulum, Aug 29 '19 at 18:54

score 1 · Accepted Answer · answered Aug 29 '19 at 18:54

I solved my own problem in a pretty simple way. I created a new project, opened the app-level build.gradle file, added all the extra dependencies from the old project, then replaced the old file with the newly created one. This solved the issue. Upon inspecting the differences between old and new I realized that somehow

android {
    buildToolsVersion '29.x.x'
}

had been added to the old project and it was one version greater than the compileSdkVersion. After Gradle finally synced successfully it notified me to fix the buildToolsVersion, which is now the same as the compileSdkVersion.

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'
}

score 0 · Answer 2 · answered Aug 29 '19 at 17:24

0

try using invalidate cache/restart option from android studio

answered Aug 29 '19 at 17:24

Ashok Kumar

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also cross check gradle offline work is unchecked and there is no problem from android studio proxy. – Ashok Kumar Aug 29 '19 at 17:44
I've confirmed gradle offline is unchecked, what do you mean by android studio proxy? – possum_pendulum Aug 29 '19 at 17:50
is there any proxy required in your connected internet? – Ashok Kumar Aug 29 '19 at 17:53
Not sure but I doubt anything changed between yesterday and today – possum_pendulum Aug 29 '19 at 17:57

score 0 · Answer 3 · answered Aug 29 '19 at 17:45

0

When i encounter that kind of error I always do the same routine:

File > Invalidate caches/Restart
Build > Clear Project
Build > Rebuild Project
File > Sync project with Gradle files

I hope that it will help you too. Good luck!

answered Aug 29 '19 at 17:45

VIAX

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I solved the problem, see my answer if you're interested. Thanks for your help. – possum_pendulum Aug 29 '19 at 18:54

How to fix sudden and generic Gradle Project Sync Failed error

3 Answers3