You can use this Android App to get SHA Key.
https://play.google.com/store/apps/details?id=dev.conn.assetlinkstool
Create a Folder name .well-known > Paste the generated assetslink.json File in that folder.
If you want to create 3 apps - Customer, Restaurant Owner & Delivery Guy app in the same assetslink.json.
Then follow this format.
[{
"relation": ["delegate_permission/common.handle_all_urls"],
"target": {
"namespace": "android_app",
"package_name": "your application id",
"sha256_cert_fingerprints":
["Your-Generated-SHAKey"]
}
},
{
"relation": ["delegate_permission/common.handle_all_urls"],
"target": {
"namespace": "android_app",
"package_name": "your application id",
"sha256_cert_fingerprints":
["Your-Generated-SHAKey"]
}
},
{
"relation": ["delegate_permission/common.handle_all_urls"],
"target": {
"namespace": "android_app",
"package_name": "your application id",
"sha256_cert_fingerprints":
["Your-Generated-SHAKey"]
}
}
]