DexException - Multiple dex files define Lokio/Sink

[rochapablo]

I can work normally running locally but when I try to build my production APK I got:

Error:Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lokio/Sink;

Error:Execution failed for task ':app:transformDexWithDexForRelease'.
> com.android.build.api.transform.TransformException: 
com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: 
com.android.ide.common.process.ProcessException: Error while executing java process with main 
class com.android.dx.command.Main with arguments {--dex --num-threads=4 --output
build/intermediates/transforms/dex/release/0 --min-sdk-version 16 
build/intermediates/transforms/preDex/release/59.jar 
build/intermediates/transforms/preDex/release/16.jar 
build/intermediates/transforms/preDex/release/41.jar 
build/intermediates/transforms/preDex/release/68.jar 
build/intermediates/transforms/preDex/release/7.jar 
build/intermediates/transforms/preDex/release/25.jar 
build/intermediates/transforms/preDex/release/8.jar 
build/intermediates/transforms/preDex/release/15.jar 
build/intermediates/transforms/preDex/release/42.jar 
build/intermediates/transforms/preDex/release/67.jar 
build/intermediates/transforms/preDex/release/50.jar 
build/intermediates/transforms/preDex/release/24.jar 
build/intermediates/transforms/preDex/release/9.jar 
build/intermediates/transforms/preDex/release/14.jar 
build/intermediates/transforms/preDex/release/30.jar 
build/intermediates/transforms/preDex/release/43.jar 
build/intermediates/transforms/preDex/release/60.jar 
build/intermediates/transforms/preDex/release/39.jar 
build/intermediates/transforms/preDex/release/3.jar 
build/intermediates/transforms/preDex/release/69.jar 
build/intermediates/transforms/preDex/release/26.jar 
build/intermediates/transforms/preDex/release/31.jar 
build/intermediates/transforms/preDex/release/44.jar 
build/intermediates/transforms/preDex/release/13.jar 
build/intermediates/transforms/preDex/release/61.jar 
build/intermediates/transforms/preDex/release/2.jar 
build/intermediates/transforms/preDex/release/46.jar 
build/intermediates/transforms/preDex/release/11.jar 
build/intermediates/transforms/preDex/release/29.jar 
build/intermediates/transforms/preDex/release/12.jar 
build/intermediates/transforms/preDex/release/62.jar 
build/intermediates/transforms/preDex/release/1.jar 
build/intermediates/transforms/preDex/release/38.jar 
build/intermediates/transforms/preDex/release/64.jar 
build/intermediates/transforms/preDex/release/28.jar 
build/intermediates/transforms/preDex/release/45.jar 
build/intermediates/transforms/preDex/release/0.jar 
build/intermediates/transforms/preDex/release/20.jar 
build/intermediates/transforms/preDex/release/63.jar 
build/intermediates/transforms/preDex/release/65.jar 
build/intermediates/transforms/preDex/release/52.jar 
build/intermediates/transforms/preDex/release/51.jar 
build/intermediates/transforms/preDex/release/5.jar 
build/intermediates/transforms/preDex/release/19.jar 
build/intermediates/transforms/preDex/release/49.jar 
build/intermediates/transforms/preDex/release/21.jar 
build/intermediates/transforms/preDex/release/36.jar 
build/intermediates/transforms/preDex/release/23.jar 
build/intermediates/transforms/preDex/release/10.jar 
build/intermediates/transforms/preDex/release/53.jar 
build/intermediates/transforms/preDex/release/40.jar 
build/intermediates/transforms/preDex/release/17.jar 
build/intermediates/transforms/preDex/release/66.jar 
build/intermediates/transforms/preDex/release/6.jar 
build/intermediates/transforms/preDex/release/18.jar 
build/intermediates/transforms/preDex/release/22.jar 
build/intermediates/transforms/preDex/release/35.jar 
build/intermediates/transforms/preDex/release/48.jar}

"react-native": "^0.48.4"
"react-native-splash-screen": "^3.0.6"

I've tried those, but still not working.

compile (project(':react-native-splash-screen')) {
        // this is a case for duplicate support library version.
        exclude group: 'com.android.support'
        exclude group: 'com.facebook.react'
}

[rochapablo]

Worked! I had just to add module, just like this:

compile (project(':react-native-splash-screen')) {
        exclude group: 'com.android.support', module: 'appcompat-v7'
}

[budiga]

This worked for me,add this to my build.gradle:
android {
dexOptions {
preDexLibraries = false
}
}
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