Stuck with Gradle Build Running

46
votes

While trying to build my Application on Android Studio 2.1 (On Ubuntu 16.04), it gets stuck on the below note: 

Executing tasks: [:app:generateDebugSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:generateDebugAndroidTestSources]

Can anybody please help me out.

9
androidandroid-studiogradle
while my problem wasn't exactly the same (i had an endless "Starting gradle daemon..." loop), this fixed it for me. – Ace

9 Answers

91
votes

Actually it is not stuck. It takes more time to build. I have got almost 3 solutions that can fix the issue.

Solution-1:

Following the steps will make it 10 times faster and reduce build time 90%

First create a file named gradle.properties in the following directory:

/home/<username>/.gradle/ (Linux)
/Users/<username>/.gradle/ (Mac)
C:\Users\<username>\.gradle (Windows)

Add this line to the file:

org.gradle.daemon=true

org.gradle.parallel=true

Solution-2:

If Android Studio has a proxy server setting and can't reach the server then it takes a long time to build, probably its trying to reach the proxy server and waiting for a timeout. When I removed the proxy server setting its working fine.

In Android Studio go to File -> Settings -> Build, Execution, Deployment -> Build Tools -> Gradle

Check the 'Offline work' under 'Global Gradle settings'

It will reduce 90% gradle build time.

Solution-3

If you are using Google Play services, make sure you aren't using this in your Gradle build script:

compile 'com.google.android.gms:play-services:8.3.0'

Only use those Google APIs that your app is really using. If all you are using is Google Maps, you would use this:

com.google.android.gms:play-services-maps:8.3.0

When I did this, my compile time went from over 2 minutes to around 25 seconds. For a list of the Google apis that you can selectively compile against, see:

https://developers.google.com/android/guides/setup

Resource Link:

  1. Android Studio gradle takes too long to build
  2. Discussion about stuck in gradle build

Solution#4:

Arun George has commented the following solution.

the issue was due to certain 32 bit libraries missing. Had to do sudo apt-get install lib32z1. Adding to gradle.properties helped reduce the build time.

6
votes

Changing buildToolsVersion was the solution for me.

6
votes

The issue is that the project isn't synced with the gradle files. The resolution I did was go to File > Sync Project with Gradle Files and it was able to sync.

3
votes

For my case I had to install gcc-multilib 

$ sudo apt-get install gcc-multilib

Check the Gradle Console at the bottom right as it has more output than the Event log.

1
votes

You're probably behind the proxy, you might have recently changed your password or something has changed. Go to

/home/<username>/.gradle/ (Linux)
/Users/<username>/.gradle/ (Mac)
C:\Users\<username>\.gradle (Windows)

in gradle.properties file, delete/ change proxy settings. They are different to your android studio proxy settings.

Had the same issue, gradle used to take an hour to build. After I deleted proxy settings from gragle.properties file, it now takes couple seconds.

1
votes

I have tried all solution. Nothing has worked. So I just restarted my PC and its working fine. You can try it.

0
votes

Adding more to @SkyWalker's answer:

Also check if you have the latest version of gradle. Updating gradle plug-in to the latest version could help.

Note: I have a similar setup(Android Studio 2.1 on Ubuntu 16.04), and I had a similar problem. Updating gradle to the latest version solved the problem for me.

0
votes

Resolution for Gradle stuck using Android Studio version 4.2.2:

When the resources are downloaded successfully the Android Studio should be restarted with "Invalidate cache and restart" and offline Gradle mode should be activated before platform-tools indexing.

0
votes

May be it's bad way, but start studio with sudo nice --17 IDE name seems worked for me