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handle-gradle-dependencies-clash.mo

Owner: Louis Zawadzki​

Prerequisites:

You have 2 dependencies that depend on different versions of the same package, so your Android build will fail with an error like:
com.android.dex.DexException: Multiple dex files define google/android/play-services/iid/R$anim;
If you're having an issue with Google Maps and Firebase you can have a look at this article.

Steps:

1. Find out which dependencies is causing the issue (~2min)

First, you need to figure out which package is causing the dependency issue.
Versions conflicts break your build when one method is present in one version and not in another.
N.B.: You can potentially have versions conflicts without any issue. Similarly your build can pass but you can still have issues if the logic inside a function has been changed.
Look at your error to know exactly which package is causing the issue (in the previous example it's probably com.google.android.gms:play-services-iid)
Then you must find out which version should be set.
To do so, run cd android && ./gradlew app:dependencies && cd ... This will print out your tree of dependencies.
In there, you must look for two instances of the dependency but with different versions. For example if it returns:
_debugCompile - ## Internal use, do not manually configure ##
+--- project :react-native-maps
| +--- com.google.android.gms:play-services-base:11.1.6
| \--- com.google.android.gms:play-services-basement:11.1.6
+--- com.salesforce.marketingcloud:marketingcloudsdk:5.3.+ -> 5.3.1
| +--- com.google.android.gms:play-services-gcm:11.0.1 -> 11.1.6
| | \--- com.google.android.gms:play-services-iid:11.0.1 -> 11.1.6
| | +--- com.google.android.gms:play-services-base:11.0.1 -> 11.1.6 (*)
| | \--- com.google.android.gms:play-services-basement:11.0.1 -> 11.1.6 (*)
A quick note on how to read this tree:
  • (*) indicates that this lib is already installed higher in the tree
  • -> indicates that a different version of the library was installed
You can see here for example that com.google.android.gms:play-services-base version is 11.1.6 for react-native-maps and version 11.0.1 for com.salesforce.marketingcloud:marketingcloudsdk, therefore forcing com.google.android.gms:play-services-iid to be at version 11.1.6.

2. Force dependency to use a specific version

If the highest version of the dependency does not work, your next guess has to be the lowest one required by your dependencies.
So now in your android/app/build.gradle you need to:
  • Tell react-native-maps not to compile com.google.android.gms:play-services-base:
    compile(project(':react-native-maps')){
    exclude group: 'com.google.android.gms', module: 'play-services-base'
    }
  • Tell com.salesforce.marketingcloud:marketingcloudsdk not to compile com.google.android.gms:play-services-base:
    compile('com.salesforce.marketingcloud:marketingcloudsdk:5.3.+') {
    exclude group: 'com.google.android.gms', module: 'play-services-base'
    }
  • Force the version of com.google.android.gms:play-services-base to be the lowest one, i.e. 11.0.1:
    compile ("com.google.android.gms:play-services-base:11.0.1") {
    force = true;
    }
  • Run cd android && ./gradlew clean && cd .. to update the dependencies
Check: your dependency tree should look like this:
_debugCompile - ## Internal use, do not manually configure ##
+--- project :react-native-maps
+--- com.salesforce.marketingcloud:marketingcloudsdk:5.3.+ -> 5.3.1
| +--- com.google.android.gms:play-services-gcm:11.0.1
| | \--- com.google.android.gms:play-services-iid:11.0.1
| | +--- com.google.android.gms:play-services-base:11.0.1 (*)
| | \--- com.google.android.gms:play-services-basement:11.0.1 (*)
+--- com.google.android.gms:play-services-maps:11.0.1
| +--- com.google.android.gms:play-services-base:11.0.1 (*)
| \--- com.google.android.gms:play-services-basement:11.0.1 (*)
+--- com.google.android.gms:play-services-base:11.0.1 (*)
Note that now com.google.android.gms:play-services-base's version is 11.0.1
Check: when you launch your build it either passes or error with a different error

3. Repeat if you have a different error

It's possible that the lib you've downgraded relies on a version of another lib that conflicts with another dependency so you will have to repeat this with this new dependency until your build passes :)
It's also possible that the lowest version does not have a method required by the highest version. In this case you can try a version between the two that works. It's possible that there is no version that works.
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