How to add billing permission to expo managed app?

Expo SDK
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  1. I’m using expo sdk 42.0.0
  2. The relevant platform is android

I’m using expo managed workflow, and right now I’m trying to implement IAP (In App Purchases). I saw that google play won’t let me add In App Product because I don’t have the BILLING permission in my apk/aab.

What I already did:

  1. I’ve installed expo-in-app-purchases because I though it would make expo add the BILLING permission automatically.
  2. I tried added to the app.json file the following line, although it’s not available in the expo app.json documentation:
    "permissions": ["com.android.vending.BILLING"]
  3. I also notice that when I add other permissions, it does not work. Maybe there is a problem with expo app.json permission in android.

Nothing worked. What can I do more to add the BILLING permission to my app?

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Actually the second point did work. It was a problem of the build process. It didn’t take the current app.json, it used cached app.json because I used --no-publish in the build process

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Android - In App Purchase - you need to add the BILLING permission to your APK

  1. I downloaded TRIVAL-DRIVER project.
  2. Create a new library Project “BILLLING LIBRARY” with my Custom package name eg: Abc.xyz.
  3. Copy All UTLITY files ALONG .AIDL file[with default package name com.android.vending.billing]in my new Project.
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