It is currently in use by another Gradle instance

Question

I\'m new to Gradle build system. I want to do some basic functions on it. I\'m running/building it in command line. I am referring User guide. And, doing some simple tasks.<

Answer 1

I could be late but look like quick and efficient solution.

Execute following steps.

1. Execute ps -ef | grep gradle
2. Open terminal and move to ~/.gradle/caches path
3. Execute find ~/.gradle -type f -name "*.lock" | while read f; do rm $f; done

It's done.

Answer 2

I had same problem and i did two steps and it became solved.

1. My JDK was not installed on Mac (i forgot to install) i installed it.
2. I deleted all items from caches folder located in this path /Users/icon_developer/.gradle/ and rebuilt the project. It worked!

Answer 3

To resolve this problem in windows

1. Goto Task Manager
2. Find the Owner PID in "details" of task manager
3. End the task

Answer 4

Have tried all this answers, including kill java process, delete .gradle in HOME_DIR and in project dir, restarted Android Studio, and even restarted OS.

It started to work normally only after I launched gradle sync.

Answer 5

In my case, just closed the Android Studio and reopened it, the problem solved.

Answer 6

While killing the process and/or removing the lock file works, Gradle should be able to handle this on its own, solving the problem permanently. This problem report hints at the solution: Gradle cannot communicate with the gradle service.

Have a look at your local network firewall. In my case,

• allowing outbound traffic from 127.0.0.1 to 127.0.0.1,

  sudo iptables -A OUTPUT -p udp -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT
  

• allowing incoming traffic from 127.0.0.1

  sudo iptables -A INPUT -s 127.0.0.1 -p udp -j ACCEPT
  

solved the issue. A discussion of a similar problem at github.

And, Please refer any link to improve my knowledge on Gradle Build system in Android.

The udacity gradle course, if you have some time.