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androidgradledex

Android gradle DexException : Library dex files are not supported in multi-dex mode

My application reached the 64k limit recently. I tried to create multiple dexes using --multidex option by adding : 

exec java $javaOpts -jar "$jarpath" --multi-dex "$@"

in dx batch file.

While the build process completed successfully but upon running the application it gave DexException : Library dex files are not supported in multi-dex mode

Now what does this mean ? I searched google for this but could not find anything useful.

Solution

  • The --multi-dex option to dx is incompatible with pre-dexing library projects. So if your app uses library projects, you need to disable pre-dexing before you can use --multi-dex.

    That said, I have no idea why this occurred to you at runtime. This clearly is a build time failure exposed by the dx tool. Maybe what happened to you is that parts of the app were rebuild when running from the IDE, triggering the build error.