android - DexException: Cannot merge new index 65536 into a non-jumbo instruction

Question

For some unknown reason my app suddenly won't build from Android Studio.

I'm keep getting

> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
    /home/martynas/android-sdk/build-tools/19.1.0/dx --dex --num-threads=4 --output
...
...
...
Error Code:
2
Output:
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Cannot merge new index 65536 into a non-jumbo instruction!

While the same application is built successfully from command line. I've checked method references count and it's way below the dreaded 64k.

I'm using AS 0.8.11 now.

Answer 1

Set the jumboMode property in build.gradle:

android {
    ...
    dexOptions {
        jumboMode true
    }

}

I also found this useful: Showing dex method count by package.