react native deep links android 12

Question

React native deep links keep failing on android version 12, anybody has some help? On older versions it works fine, so the config must be fine and I checked probably 100 times the react native documentation.

Answer 1

Android 12 requires the developer to verify the domain to be able to use the links. For ios it is required to upload a json into a

.well-known

folder on your webhosting to verify the domain is really yours. Since Android 12 you have to do the same for Android.

You create a file called assetlinks.json and upload it to the same folder as the ios file.

 [{
  "relation": ["delegate_permission/common.handle_all_urls"],
  "target": {
    "namespace": "android_app",
    "package_name": "<Your App’s package name>",
    "sha256_cert_fingerprints":
    ["<Your App’s SHA256 finger print>"]
  }
}]

The fingerprint can get created via Android Studio:

/tools/App Links Assistant

There you can also verify that it worked, later of course also within the application.