diff --git a/android/buildIcons.nix b/android/buildIcons.nix
index 9f6f7b856..ac19679f7 100644
--- a/android/buildIcons.nix
+++ b/android/buildIcons.nix
@@ -1,8 +1,17 @@
-{ runCommand, imagemagick }:
-{ src }:
+{ runCommand, imagemagick, lib }:
+{ src ? null # Base raster image for fixed-size icons (must be a path)
+, adaptiveIcon ? null
+  # Path to a XML file containing the adaptive icon specification (SDK
+  # 26 and up).
+}:
+let
+  rasterInput =
+    if (src == null) && (adaptiveIcon == null)
+      then abort "Either src or adaptiveIcon must be specified!"
+      else src;
+in
 runCommand "android-icons" {
-  inherit src;
-  buildCommand = ''
+  buildCommand = lib.optionalString (src != null) ''
     mkdir "$out"
 
     launcherIconSize() {
@@ -20,8 +29,11 @@ runCommand "android-icons" {
     for x in l m tv h xh xxh xxxh ; do
       local dir="$out/drawable-''${x}dpi"
       mkdir "$dir"
-      convert -resize "$(launcherIconSize "$x")" -flatten "$src" "$dir/ic_launcher.png"
+      convert -resize "$(launcherIconSize "$x")" -flatten "${rasterInput}" "$dir/ic_launcher.png"
     done
+  '' + lib.optionalString (adaptiveIcon != null) ''
+    mkidr -p "$out/mipmap-anydpi-v26/"
+    cp "${adaptiveIcon}" "$out/mipmap-anydpi-v26/ic_launcher.xml"
   '';
   nativeBuildInputs = [
     imagemagick