86.4 Associating the App with a Website
By default, Android will provide the user with a range of options for handling an app link using the panel shown in Figure 86-1. This will usually consist of the Chrome browser and the target app.
To prevent this from happening the app link URL needs to be associated with the website on which the app link is based. This is achieved by creating a Digital Assets Link file named assetlinks.json and installing it within the website’s .well-known folder. Note that digital asset linking is only possible for websites that are https based.
A digital asset link file comprises a relation statement granting permission for a target app to be launched using the web site’s link URLs and a target statement declaring the companion app package name and SHA-256 certificate fingerprint for that project. A typical asset link file might, for example, read as follows:
[{
"relation": [...
