diff --git a/samples/ThemedNavBarKeyboard/Android.bp b/samples/ThemedNavBarKeyboard/Android.bp
index d2fa55a5c..f41f29fa9 100644
--- a/samples/ThemedNavBarKeyboard/Android.bp
+++ b/samples/ThemedNavBarKeyboard/Android.bp
@@ -21,6 +21,8 @@ package {
 android_app {
     name: "ThemedNavBarKeyboard",
     srcs: ["**/*.java"],
+    min_sdk_version: "28",
+    target_sdk_version: "31",
     sdk_version: "current",
     dex_preopt: {
         enabled: false,
diff --git a/samples/ThemedNavBarKeyboard/AndroidManifest.xml b/samples/ThemedNavBarKeyboard/AndroidManifest.xml
index a979c31e8..d96b09872 100755
--- a/samples/ThemedNavBarKeyboard/AndroidManifest.xml
+++ b/samples/ThemedNavBarKeyboard/AndroidManifest.xml
@@ -19,6 +19,7 @@
 
     <application android:label="ThemedNavBarKeyboard">
         <service android:name=".ThemedNavBarKeyboard"
+            android:exported="true"
             android:label="ThemedNavBarKeyboard"
             android:permission="android.permission.BIND_INPUT_METHOD">
             <intent-filter>
diff --git a/samples/ThemedNavBarKeyboard/src/com/example/android/themednavbarkeyboard/ThemedNavBarKeyboard.java b/samples/ThemedNavBarKeyboard/src/com/example/android/themednavbarkeyboard/ThemedNavBarKeyboard.java
index 6b33f3fee..5e09a8341 100644
--- a/samples/ThemedNavBarKeyboard/src/com/example/android/themednavbarkeyboard/ThemedNavBarKeyboard.java
+++ b/samples/ThemedNavBarKeyboard/src/com/example/android/themednavbarkeyboard/ThemedNavBarKeyboard.java
@@ -59,7 +59,7 @@ public class ThemedNavBarKeyboard extends InputMethodService {
     @Override
     public void onCreate() {
         super.onCreate();
-        if (BuildCompat.EFFECTIVE_SDK_INT > Build.VERSION_CODES.P) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             // Disable contrast for extended navbar gradient.
             getWindow().getWindow().setNavigationBarContrastEnforced(false);
         }