Common Android issues

Version inconsistency between local and Codemagic

Description: Builds succeed locally but not on Codemagic and throw vague errors, such as Gradle task bundleRelease failed with exit code 1, or the build is successful, but some functions aren’t working.

Cause: These issues are likely caused because plugin and gradle versions used locally are different from the versions used on Codemagic. If you are using a gradle version that is different from Codemagic, you have to define it in gradle wrapper. Otherwise, Codemagic ignores your build.gradle file, and your build won’t work properly. See which software versions Codemagic uses.

Solution: First, you need to make sure that the gradlew file isn’t in .gitignore. Look for **/android/gradlew, and if it’s in .gitignore, delete it from there. Then add !gradle-wrapper.jar to a new line in .gitignore to create an exception so that gradle-wrapper.jar would also be excluded from .gitignore.

Run ./gradlew wrapper --gradle-version [your gradle version] locally to create gradlew and files in your repository. Commit the changes and rerun your Codemagic build.

Additional steps: Additional steps are required if you see the following error during the build process:

Error! Failed to check gradle version. Malformed executable tmpABCDEF/gradlew

Codemagic runs ./gradlew --version on the builder side to check if it’s suitable for execution. If you see the error message shown above, there is something wrong with checking the gradle version.

To investigate and fix the issues:

  • Make a clean clone of the repository and execute the following commands:
cd <project_root>
chmod +x gradlew
./gradlew --version
  • Make a fix for the issue found.
  • Commit changes to the repo.
  • Run the build again in Codemagic.

Troubleshooting Gradle plugin errors

Android users experiencing issues resolving plugins because of the sunset of JCenter.

On February 3, 2021, JFrog, the company that maintains JCenter, announced that they will be shutting down Bintray and JCenter.

To avoid disruptions to your build pipelines, start migrating to a new hosting solution like mavenCentral(), rather than using JCenter or Bintray.

Steps to prepare your build for the JCenter shutdown

  • Developers who use packages from JCenter must point their projects to the new repositories to be able to get the latest versions.
  • To fully migrate away from JCenter, replace all jcenter() occurrences with mavenCentral() in all build.gradle files.
    repositories {
        //other repos
  • Disable or delete cache.
  • Run your build pipeline to see if everything works still.
    • If your build is successful, you’re done.
    • If your build still fails, you’ll need to troubleshoot which dependencies still require JCenter. The errors in the failed build step will point out the dependecies using JCenter.
Note: You’ll have to completely upgrade all dependencies that require JCenter to avoid failed builds.