Add Documentation for Android Deep Link Handling

admin_manual/configuration_server/android_deep_link_handling.rst

@@ -0,0 +1,47 @@
+==========================
+Android Deep Link Handling
+==========================
+
+Deep linking in Android allows your application to be launched directly from a URL, 
+making it easier for users to navigate to specific content within your app. 
+Starting from Android 12, handling deep links requires additional configuration 
+using an ``assetlinks.json`` file to ensure the app and the host domain are properly
+associated.
+
+Android 11 and Below
+--------------------
+For Android 11 and below, deep linking is straightforward and does not require additional 
+configuration beyond the usual manifest settings.
+
+Android 12 and Above
+--------------------
+For Android 12 and above, an additional configuration step is required to verify the 
+relationship between your app and the host domain using the ``assetlinks.json`` file.
+
+Creating assetlinks.json
+~~~~~~~~~~~~~~~~~~~~~~~~
+Create a file named ``assetlinks.json`` and host it in the .well-known directory of 
+your website (e.g., https://www.cloud.example.com/.well-known/assetlinks.json).
+
+Example ``assetlinks.json``::
+
+    [
+      {
+        "relation": ["delegate_permission/common.handle_all_urls"],
+        "target": {
+          "namespace": "android_app",
+          "package_name": "com.cloud.example.nextcloud",
+          "sha256_cert_fingerprints": [
+            "FB:00:95:22:F6:5E:25:80:22:61:B6:7B:10:A4:5F:D7:0E:61:00:31:97:6F:40:B2:8A:64:9E:15:2D:ED:03:73"
+          ]
+        }
+      }
+    ]
+
+Nextcloud Configuration Limitation
+==================================
+Due to the additional requirement of hosting an ``assetlinks.json`` file
+for Android 12 and above, Nextcloud cannot configure the Android client 
+for all different hosts. This is because each host needs its own ``assetlinks.json``
+file to establish a verified relationship with the app, and Nextcloud cannot manage 
+this file for every possible host domain.

go.php

@@ -55,6 +55,7 @@
     'admin-warnings'          => '/admin_manual/configuration_server/security_setup_warnings.html',
     'admin-windows-compatible-filenames' => '/admin_manual/configuration_files/windows_compatible_filenames.html',
     'admin-workflowengine'    => '/admin_manual/file_workflows/index.html',
+    'admin-android-deep-link-handling'    => 'admin_manual/configuration_server/android_deep_link_handling.html',
 
     'developer-manual'        => '/developer_manual',
     'developer-backports'     => '/developer_manual/getting_started/development_process.html#bugfixes',