2 files changed, 21 insertions, 0 deletions
diff --git a/service/java/com/android/server/wifi/FrameworkFacade.java b/service/java/com/android/server/wifi/FrameworkFacade.java
index 2c3e5f7e0..ba114df8a 100644
--- a/service/java/com/android/server/wifi/FrameworkFacade.java
+++ b/service/java/com/android/server/wifi/FrameworkFacade.java
@@ -16,6 +16,7 @@
 
 package com.android.server.wifi;
 
+import android.app.ActivityManager;
 import android.app.AppGlobals;
 import android.app.PendingIntent;
 import android.content.Context;
@@ -161,4 +162,14 @@ public class FrameworkFacade {
     public boolean inStorageManagerCryptKeeperBounce() {
         return StorageManager.inCryptKeeperBounce();
     }
+
+    /**
+     * Check if the provided uid is the app in the foreground.
+     * @param uid the uid to check
+     * @return true if the app is in the foreground, false otherwise
+     * @throws RemoteException
+     */
+    public boolean isAppForeground(int uid) throws RemoteException {
+        return ActivityManager.getService().isAppForeground(uid);
+    }
 }
diff --git a/service/java/com/android/server/wifi/WifiServiceImpl.java b/service/java/com/android/server/wifi/WifiServiceImpl.java
index d3f5b13de..2dff54a50 100644
--- a/service/java/com/android/server/wifi/WifiServiceImpl.java
+++ b/service/java/com/android/server/wifi/WifiServiceImpl.java
@@ -1160,6 +1160,16 @@ public class WifiServiceImpl extends IWifiManager.Stub {
             return LocalOnlyHotspotCallback.ERROR_TETHERING_DISALLOWED;
         }
 
+        // the app should be in the foreground
+        try {
+            if (!mFrameworkFacade.isAppForeground(uid)) {
+                return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE;
+            }
+        } catch (RemoteException e) {
+            mLog.trace("RemoteException during isAppForeground when calling startLOHS");
+            return LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE;
+        }
+
         mLog.trace("startLocalOnlyHotspot uid=% pid=%").c(uid).c(pid).flush();
 
         synchronized (mLocalOnlyHotspotRequests) {