enable Hermes

[matiasmateu]

I'm trying to activate Hermes without any success.

I tried this already:

1 - Make sure that "reactNativeEngine": "hermes" in the renative.json of the template

2 - Run the app with -r to generate the platformBuild folder again.

3 - After this if I check global.HermesInternal in runtime it always returns false.

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Another thing that I tried is to create a new build.gradle and add this piece of code:

This doesn't work neither.

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[mihaiblaga89]

the second variant should not work but the first one should. Can you set that, run it with -r and then check platformBuilds/xxx_android folder if rnv enabled it correctly in the native code?

[matiasmateu]

yes, it updates the build.gradle

But then in runtime I always get global.HermesInternal = false. And also Chrome Debugger doesn't find any Hermes app

[mihaiblaga89]

looking at the hermes docs that's all you need to do for android. We'll have to investigate this further

[matiasmateu]

Thanks!

[pauliusguzas]

Actual hermes engine is working as default but can't override it with other engines on 1.0.0-rc.6 new project

[ElenaDiachenko]

@GabrieleKaceviciute @pauliusguzas 1.0.0-rc.7. Hermes works in the repo and in new project as well. How to check: modify renative. json by set other engine. For example: "platforms": { "android":{ "reactNativeEngine": "v8-android" } },