DO NOT MERGE: Persist UWB State in AOSP stack.

Test: Manual
Bug: 191608501
Change-Id: Ib3ff55ab509b5794e2ed0aa0b3a805a6baee8246

services/tests/servicestests/src/com/android/server/uwb/UwbServiceImplTest.java

@@ -82,6 +82,7 @@ public class UwbServiceImplTest {
         MockitoAnnotations.initMocks(this);
         when(mUwbInjector.getVendorService()).thenReturn(mVendorService);
         when(mUwbInjector.checkUwbRangingPermissionForDataDelivery(any(), any())).thenReturn(true);
+        when(mUwbInjector.isPersistedUwbStateEnabled()).thenReturn(true);
         when(mVendorService.asBinder()).thenReturn(mVendorServiceBinder);
         mUwbServiceImpl = new UwbServiceImpl(mContext, mUwbInjector);
     }

services/uwb/java/com/android/server/uwb/UwbInjector.java

@@ -21,10 +21,13 @@ import static android.content.PermissionChecker.PERMISSION_GRANTED;
 
 import android.annotation.NonNull;
 import android.content.AttributionSource;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.PermissionChecker;
 import android.os.IBinder;
 import android.os.ServiceManager;
+import android.provider.Settings;
+import android.uwb.AdapterState;
 import android.uwb.IUwbAdapter;
 
 
@@ -80,4 +83,16 @@ public class UwbInjector {
                 mContext, UWB_RANGING, -1, attributionSource, message);
         return permissionCheckResult == PERMISSION_GRANTED;
     }
+
+    /** Returns true if UWB state saved in Settings is enabled. */
+    public boolean isPersistedUwbStateEnabled() {
+        final ContentResolver cr = mContext.getContentResolver();
+        try {
+            return Settings.Global.getInt(cr, Settings.Global.UWB_ENABLED)
+                    == AdapterState.STATE_ENABLED_ACTIVE;
+        } catch (Settings.SettingNotFoundException e) {
+            Settings.Global.putInt(cr, Settings.Global.UWB_ENABLED, AdapterState.STATE_DISABLED);
+            return false;
+        }
+    }
 }

services/uwb/java/com/android/server/uwb/UwbServiceImpl.java

@@ -18,13 +18,16 @@ package com.android.server.uwb;
 
 import android.annotation.NonNull;
 import android.content.AttributionSource;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.os.Binder;
 import android.os.IBinder;
 import android.os.PersistableBundle;
 import android.os.RemoteException;
+import android.provider.Settings;
 import android.util.ArrayMap;
 import android.util.Log;
+import android.uwb.AdapterState;
 import android.uwb.IUwbAdapter;
 import android.uwb.IUwbAdapterStateCallbacks;
 import android.uwb.IUwbRangingCallbacks;
@@ -225,13 +228,15 @@ public class UwbServiceImpl extends IUwbAdapter.Stub implements IBinder.DeathRec
         mVendorUwbAdapter = null;
     }
 
-    private synchronized IUwbAdapter getVendorUwbAdapter() throws IllegalStateException {
+    private synchronized IUwbAdapter getVendorUwbAdapter()
+            throws IllegalStateException, RemoteException {
         if (mVendorUwbAdapter != null) return mVendorUwbAdapter;
         mVendorUwbAdapter = mUwbInjector.getVendorService();
         if (mVendorUwbAdapter == null) {
             throw new IllegalStateException("No vendor service found!");
         }
         Log.i(TAG, "Retrieved vendor service");
+        mVendorUwbAdapter.setEnabled(mUwbInjector.isPersistedUwbStateEnabled());
         linkToVendorServiceDeath();
         return mVendorUwbAdapter;
     }
@@ -320,6 +325,13 @@ public class UwbServiceImpl extends IUwbAdapter.Stub implements IBinder.DeathRec
 
     @Override
     public synchronized void setEnabled(boolean enabled) throws RemoteException {
+        persistUwbState(enabled);
         getVendorUwbAdapter().setEnabled(enabled);
     }
+
+    private void persistUwbState(boolean enabled) {
+        final ContentResolver cr = mContext.getContentResolver();
+        int state = enabled ? AdapterState.STATE_ENABLED_ACTIVE : AdapterState.STATE_DISABLED;
+        Settings.Global.putInt(cr, Settings.Global.UWB_ENABLED, state);
+    }
 }