[Settings] Convert to getSystemService(Class<T>)

Change to getSystemService(Class<T>) to align the capability with framework
part.

Bug: 179640862
Test: local
Change-Id: I1b4812044fc4876bec6645570049a60f9470dbbd

src/com/android/settings/deviceinfo/DeviceNamePreferenceController.java

@@ -55,7 +55,7 @@ public class DeviceNamePreferenceController extends BasePreferenceController
     public DeviceNamePreferenceController(Context context, String key) {
         super(context, key);
 
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
         mWifiDeviceNameTextValidator = new WifiDeviceNameTextValidator();
         mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
 

src/com/android/settings/deviceinfo/StorageWizardMigrateConfirm.java

@@ -115,7 +115,7 @@ public class StorageWizardMigrateConfirm extends StorageWizardBase {
         try {
             moveId = getPackageManager().movePrimaryStorage(mVolume);
         } catch (IllegalArgumentException e) {
-            StorageManager sm = (StorageManager) getSystemService(STORAGE_SERVICE);
+            StorageManager sm = getSystemService(StorageManager.class);
 
             if (Objects.equals(mVolume.getFsUuid(), sm.getPrimaryStorageVolume().getUuid())) {
                 final Intent intent = new Intent(this, StorageWizardReady.class);

src/com/android/settings/deviceinfo/aboutphone/MyDeviceInfoFragment.java

@@ -146,8 +146,8 @@ public class MyDeviceInfoFragment extends DashboardFragment
         // TODO: There may be an avatar setting action we can use here.
         final int iconId = bundle.getInt("icon_id", 0);
         if (iconId == 0) {
-            final UserManager userManager = (UserManager) getActivity().getSystemService(
+            final UserManager userManager = getActivity().getSystemService(
-                    Context.USER_SERVICE);
+                    UserManager.class);
             final UserInfo info = Utils.getExistingUser(userManager,
                     android.os.Process.myUserHandle());
             controller.setLabel(info.name);

src/com/android/settings/deviceinfo/firmwareversion/FirmwareVersionDetailPreferenceController.java

@@ -49,7 +49,7 @@ public class FirmwareVersionDetailPreferenceController extends BasePreferenceCon
 
     public FirmwareVersionDetailPreferenceController(Context context, String key) {
         super(context, key);
-        mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
+        mUserManager = mContext.getSystemService(UserManager.class);
         initializeAdminPermissions();
     }
 

src/com/android/settings/deviceinfo/imei/ImeiInfoPreferenceController.java

@@ -49,7 +49,7 @@ public class ImeiInfoPreferenceController extends BasePreferenceController {
 
     public ImeiInfoPreferenceController(Context context, String key) {
         super(context, key);
-        mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        mTelephonyManager = context.getSystemService(TelephonyManager.class);
         mIsMultiSim = mTelephonyManager.getPhoneCount() > 1;
     }
 

src/com/android/settings/deviceinfo/simstatus/SimStatusPreferenceController.java

@@ -46,9 +46,9 @@ public class SimStatusPreferenceController extends
     public SimStatusPreferenceController(Context context, Fragment fragment) {
         super(context);
 
-        mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        mTelephonyManager = context.getSystemService(TelephonyManager.class);
-        mSubscriptionManager = (SubscriptionManager) context.getSystemService(
+        mSubscriptionManager = context.getSystemService(
-                Context.TELEPHONY_SUBSCRIPTION_SERVICE);
+                SubscriptionManager.class);
         mFragment = fragment;
     }
 

src/com/android/settings/network/ApnEditor.java

@@ -1285,8 +1285,8 @@ public class ApnEditor extends SettingsPreferenceFragment
         mReadOnlyApnTypes = null;
         mReadOnlyApnFields = null;
 
-        final CarrierConfigManager configManager = (CarrierConfigManager)
+        final CarrierConfigManager configManager =
-                getSystemService(Context.CARRIER_CONFIG_SERVICE);
+                getSystemService(CarrierConfigManager.class);
         if (configManager != null) {
             final PersistableBundle b = configManager.getConfigForSubId(mSubId);
             if (b != null) {

src/com/android/settings/network/ApnSettings.java

@@ -206,8 +206,8 @@ public class ApnSettings extends RestrictedSettingsFragment
         mSubscriptionInfo = getSubscriptionInfo(mSubId);
         mTelephonyManager = activity.getSystemService(TelephonyManager.class);
 
-        final CarrierConfigManager configManager = (CarrierConfigManager)
+        final CarrierConfigManager configManager =
-                getSystemService(Context.CARRIER_CONFIG_SERVICE);
+                getSystemService(CarrierConfigManager.class);
         final PersistableBundle b = configManager.getConfigForSubId(mSubId);
         mHideImsApn = b.getBoolean(CarrierConfigManager.KEY_HIDE_IMS_APN_BOOL);
         mAllowAddingApns = b.getBoolean(CarrierConfigManager.KEY_ALLOW_ADDING_APNS_BOOL);

src/com/android/settings/network/EthernetTetherPreferenceController.java

@@ -43,7 +43,7 @@ public final class EthernetTetherPreferenceController extends TetherBasePreferen
         super(context, preferenceKey);
         mEthernetRegex = context.getString(
                 com.android.internal.R.string.config_ethernet_iface_regex);
-        mEthernetManager = (EthernetManager) context.getSystemService(Context.ETHERNET_SERVICE);
+        mEthernetManager = context.getSystemService(EthernetManager.class);
     }
 
     @OnLifecycleEvent(Lifecycle.Event.ON_START)

src/com/android/settings/network/MobilePlanPreferenceController.java

@@ -73,9 +73,9 @@ public class MobilePlanPreferenceController extends AbstractPreferenceController
             MobilePlanPreferenceHost host) {
         super(context);
         mHost = host;
-        mCm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        mCm = context.getSystemService(ConnectivityManager.class);
-        mTm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        mTm = context.getSystemService(TelephonyManager.class);
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        mUserManager = context.getSystemService(UserManager.class);
         mIsSecondaryUser = !mUserManager.isAdminUser();
     }
 

src/com/android/settings/network/NetworkResetRestrictionChecker.java

@@ -31,7 +31,7 @@ public class NetworkResetRestrictionChecker {
 
     public NetworkResetRestrictionChecker(Context context) {
         mContext = context;
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        mUserManager = context.getSystemService(UserManager.class);
     }
 
     @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)

src/com/android/settings/network/NetworkScorerPicker.java

@@ -140,6 +140,6 @@ public class NetworkScorerPicker extends InstrumentedPreferenceFragment implemen
 
     @VisibleForTesting
     NetworkScoreManager createNetworkScorerManager(Context context) {
-        return (NetworkScoreManager) context.getSystemService(Context.NETWORK_SCORE_SERVICE);
+        return context.getSystemService(NetworkScoreManager.class);
     }
 }

src/com/android/settings/network/NetworkScorerPickerPreferenceController.java

@@ -37,7 +37,7 @@ public class NetworkScorerPickerPreferenceController extends BasePreferenceContr
     public NetworkScorerPickerPreferenceController(Context context, String key) {
         super(context, key);
         mNetworkScoreManager =
-                (NetworkScoreManager) mContext.getSystemService(Context.NETWORK_SCORE_SERVICE);
+                mContext.getSystemService(NetworkScoreManager.class);
     }
 
     @Override

src/com/android/settings/network/TetherEnabler.java

@@ -128,10 +128,10 @@ public class TetherEnabler implements SwitchWidgetController.OnSwitchChangeListe
         mSwitchWidgetController = switchWidgetController;
         mDataSaverBackend = new DataSaverBackend(context);
         mConnectivityManager =
-                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+                context.getSystemService(ConnectivityManager.class);
-        mTetheringManager = (TetheringManager) context.getSystemService(Context.TETHERING_SERVICE);
+        mTetheringManager = context.getSystemService(TetheringManager.class);
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        mUserManager = context.getSystemService(UserManager.class);
         mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
         mBluetoothPan = bluetoothPan;
         mEthernetRegex =

src/com/android/settings/network/telephony/MobileNetworkSettings.java

@@ -194,7 +194,7 @@ public class MobileNetworkSettings extends AbstractMobileNetworkSettings {
 
         super.onCreate(icicle);
         final Context context = getContext();
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        mUserManager = context.getSystemService(UserManager.class);
         mTelephonyManager = context.getSystemService(TelephonyManager.class)
                 .createForSubscriptionId(mSubId);
 

src/com/android/settings/network/telephony/NetworkSelectSettings.java

@@ -106,8 +106,8 @@ public class NetworkSelectSettings extends DashboardFragment {
                 .createForSubscriptionId(mSubId);
         mNetworkScanHelper = new NetworkScanHelper(
                 mTelephonyManager, mCallback, mNetworkScanExecutor);
-        PersistableBundle bundle = ((CarrierConfigManager) getContext().getSystemService(
+        PersistableBundle bundle = (getContext().getSystemService(
-                Context.CARRIER_CONFIG_SERVICE)).getConfigForSubId(mSubId);
+                CarrierConfigManager.class)).getConfigForSubId(mSubId);
         if (bundle != null) {
             mShow4GForLTE = bundle.getBoolean(
                     CarrierConfigManager.KEY_SHOW_4G_FOR_LTE_DATA_ICON_BOOL);

src/com/android/settings/network/telephony/RenameMobileNetworkDialogFragment.java

@@ -190,8 +190,8 @@ public class RenameMobileNetworkDialogFragment extends InstrumentedDialogFragmen
 
         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
-            final LayoutInflater inflater = (LayoutInflater)
+            final LayoutInflater inflater =
-                    mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+                    mContext.getSystemService(LayoutInflater.class);
 
             if (convertView == null) {
                 convertView = inflater.inflate(mItemResId, null);

src/com/android/settings/sim/SimSelectNotification.java

@@ -104,8 +104,8 @@ public class SimSelectNotification extends BroadcastReceiver {
             subId = SubscriptionManager.getDefaultSmsSubscriptionId();
         }
 
-        SubscriptionManager subscriptionManager = ((SubscriptionManager) context.getSystemService(
+        SubscriptionManager subscriptionManager = (context.getSystemService(
-                Context.TELEPHONY_SUBSCRIPTION_SERVICE));
+                SubscriptionManager.class));
         if (!subscriptionManager.isActiveSubscriptionId(subId)) {
             Log.w(TAG, "onEnableMmsDataRequest invalid sub ID " + subId);
             return;
@@ -130,8 +130,8 @@ public class SimSelectNotification extends BroadcastReceiver {
             return;
         }
 
-        TelephonyManager tm = ((TelephonyManager) context.getSystemService(
+        TelephonyManager tm = (context.getSystemService(
-                Context.TELEPHONY_SERVICE)).createForSubscriptionId(subId);
+                TelephonyManager.class)).createForSubscriptionId(subId);
 
         if (tm.isDataEnabledForApn(TYPE_MMS)) {
             Log.w(TAG, "onEnableMmsDataRequest MMS data already enabled on sub ID " + subId);
@@ -229,14 +229,14 @@ public class SimSelectNotification extends BroadcastReceiver {
                 PendingIntent.FLAG_CANCEL_CURRENT);
         builder.setContentIntent(resultPendingIntent);
         NotificationManager notificationManager =
-                (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+                context.getSystemService(NotificationManager.class);
         notificationManager.createNotificationChannel(notificationChannel);
         notificationManager.notify(SIM_SELECT_NOTIFICATION_ID, builder.build());
     }
 
     public static void cancelSimSelectNotification(Context context) {
         NotificationManager notificationManager =
-                (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+                context.getSystemService(NotificationManager.class);
         notificationManager.cancel(SIM_SELECT_NOTIFICATION_ID);
     }
 
@@ -269,14 +269,14 @@ public class SimSelectNotification extends BroadcastReceiver {
 
         // Notify the notification.
         NotificationManager notificationManager =
-                (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+                context.getSystemService(NotificationManager.class);
         notificationManager.createNotificationChannel(notificationChannel);
         notificationManager.notify(ENABLE_MMS_NOTIFICATION_ID, builder.build());
     }
 
     private void cancelEnableMmsNotification(Context context) {
         NotificationManager notificationManager =
-                (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+                context.getSystemService(NotificationManager.class);
         notificationManager.cancel(ENABLE_MMS_NOTIFICATION_ID);
     }
 

src/com/android/settings/vpn2/AppManagementFragment.java

@@ -319,7 +319,7 @@ public class AppManagementFragment extends SettingsPreferenceFragment
     @VisibleForTesting
     static boolean appHasVpnPermission(Context context, @NonNull ApplicationInfo application) {
         final AppOpsManager service =
-                (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+                context.getSystemService(AppOpsManager.class);
         final List<AppOpsManager.PackageOps> ops = service.getOpsForPackage(application.uid,
                 application.packageName, new int[]{OP_ACTIVATE_VPN, OP_ACTIVATE_PLATFORM_VPN});
         return !ArrayUtils.isEmpty(ops);

src/com/android/settings/vpn2/VpnSettings.java

@@ -116,9 +116,9 @@ public class VpnSettings extends RestrictedSettingsFragment implements
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        mUserManager = (UserManager) getSystemService(Context.USER_SERVICE);
+        mUserManager = getSystemService(UserManager.class);
-        mConnectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
+        mConnectivityManager = getSystemService(ConnectivityManager.class);
-        mVpnManager = (VpnManager) getSystemService(Context.VPN_MANAGEMENT_SERVICE);
+        mVpnManager = getSystemService(VpnManager.class);
 
         mUnavailable = isUiRestricted();
         setHasOptionsMenu(!mUnavailable);
@@ -509,7 +509,7 @@ public class VpnSettings extends RestrictedSettingsFragment implements
         }
 
         // Fetch VPN-enabled apps from AppOps.
-        AppOpsManager aom = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+        AppOpsManager aom = context.getSystemService(AppOpsManager.class);
         List<AppOpsManager.PackageOps> apps =
                 aom.getPackagesForOps(new int[] {OP_ACTIVATE_VPN, OP_ACTIVATE_PLATFORM_VPN});
         if (apps != null) {

src/com/android/settings/wifi/ChangeWifiStateDetails.java

@@ -49,7 +49,7 @@ public class ChangeWifiStateDetails extends AppInfoWithHeader
         super.onCreate(savedInstanceState);
         final Context context = getActivity();
         mAppBridge = new AppStateChangeWifiStateBridge(context, mState, null);
-        mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
+        mAppOpsManager = context.getSystemService(AppOpsManager.class);
 
         // find preferences
         addPreferencesFromResource(R.xml.change_wifi_state_details);

src/com/android/settings/wifi/ConfigureWifiSettings.java

@@ -68,7 +68,7 @@ public class ConfigureWifiSettings extends DashboardFragment {
 
     @Override
     protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
-        final WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
+        final WifiManager wifiManager = getSystemService(WifiManager.class);
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
         controllers.add(new WifiP2pPreferenceController(context, getSettingsLifecycle(),
                 wifiManager));

src/com/android/settings/wifi/UseOpenWifiPreferenceController.java

@@ -51,7 +51,7 @@ public class UseOpenWifiPreferenceController extends TogglePreferenceController
         super(context, KEY_USE_OPEN_WIFI_AUTOMATICALLY);
         mContentResolver = context.getContentResolver();
         mNetworkScoreManager =
-                (NetworkScoreManager) context.getSystemService(Context.NETWORK_SCORE_SERVICE);
+                context.getSystemService(NetworkScoreManager.class);
         mSettingObserver = new SettingObserver();
         updateEnableUseWifiComponentName();
         checkForFeatureSupportedScorers();

src/com/android/settings/wifi/WifiAPITest.java

@@ -64,7 +64,7 @@ public class WifiAPITest extends SettingsPreferenceFragment implements
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
+        mWifiManager = getSystemService(WifiManager.class);
     }
 
     @Override

src/com/android/settings/wifi/WifiConfigInfo.java

@@ -38,7 +38,7 @@ public class WifiConfigInfo extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
+        mWifiManager = getSystemService(WifiManager.class);
         setContentView(R.layout.wifi_config_info);
         mConfigList = (TextView) findViewById(R.id.config_list);
     }

src/com/android/settings/wifi/WifiEnabler.java

@@ -75,7 +75,7 @@ public class WifiEnabler implements SwitchWidgetController.OnSwitchChangeListene
     public WifiEnabler(Context context, SwitchWidgetController switchWidget,
         MetricsFeatureProvider metricsFeatureProvider) {
         this(context, switchWidget, metricsFeatureProvider,
-            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE));
+            context.getSystemService(ConnectivityManager.class));
     }
 
     @VisibleForTesting
@@ -86,7 +86,7 @@ public class WifiEnabler implements SwitchWidgetController.OnSwitchChangeListene
         mSwitchWidget = switchWidget;
         mSwitchWidget.setListener(this);
         mMetricsFeatureProvider = metricsFeatureProvider;
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
         mConnectivityManager = connectivityManager;
 
         mIntentFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);

src/com/android/settings/wifi/WifiNoInternetDialog.java

@@ -102,7 +102,7 @@ public final class WifiNoInternetDialog extends AlertActivity implements
             }
         };
 
-        mCM = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
+        mCM = getSystemService(ConnectivityManager.class);
         mCM.registerNetworkCallback(request, mNetworkCallback);
 
         final NetworkInfo ni = mCM.getNetworkInfo(mNetwork);

src/com/android/settings/wifi/WifiStatusTest.java

@@ -116,7 +116,7 @@ public class WifiStatusTest extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
+        mWifiManager = getSystemService(WifiManager.class);
 
         mWifiStateFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
         mWifiStateFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);

src/com/android/settings/wifi/WifiUtils.java

@@ -83,7 +83,7 @@ public class WifiUtils {
         final DevicePolicyManager dpm =
                 (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
         final PackageManager pm = context.getPackageManager();
-        final UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        final UserManager um = context.getSystemService(UserManager.class);
 
         // Check if device has DPM capability. If it has and dpm is still null, then we
         // treat this case with suspicion and bail out.

src/com/android/settings/wifi/WifiWakeupPreferenceController.java

@@ -73,7 +73,7 @@ public class WifiWakeupPreferenceController extends TogglePreferenceController i
 
     public WifiWakeupPreferenceController(Context context) {
         super(context, KEY_ENABLE_WIFI_WAKEUP);
-        mLocationManager = (LocationManager) context.getSystemService(Service.LOCATION_SERVICE);
+        mLocationManager = context.getSystemService(LocationManager.class);
         mWifiManager = context.getSystemService(WifiManager.class);
     }
 

src/com/android/settings/wifi/calling/WifiCallingSettingsForSub.java

@@ -124,8 +124,8 @@ public class WifiCallingSettingsForSub extends SettingsPreferenceFragment
 
             boolean isWfcModeEditable = true;
             boolean isWfcRoamingModeEditable = false;
-            final CarrierConfigManager configManager = (CarrierConfigManager)
+            final CarrierConfigManager configManager =
-                    activity.getSystemService(Context.CARRIER_CONFIG_SERVICE);
+                    activity.getSystemService(CarrierConfigManager.class);
             if (configManager != null) {
                 PersistableBundle b =
                         configManager.getConfigForSubId(WifiCallingSettingsForSub.this.mSubId);
@@ -340,8 +340,8 @@ public class WifiCallingSettingsForSub extends SettingsPreferenceFragment
             return;
         }
 
-        final CarrierConfigManager configManager = (CarrierConfigManager)
+        final CarrierConfigManager configManager =
-                getSystemService(Context.CARRIER_CONFIG_SERVICE);
+                getSystemService(CarrierConfigManager.class);
         boolean isWifiOnlySupported = true;
 
         if (configManager != null) {

src/com/android/settings/wifi/details2/AddDevicePreferenceController2.java

@@ -42,7 +42,7 @@ public class AddDevicePreferenceController2 extends BasePreferenceController {
     public AddDevicePreferenceController2(Context context) {
         super(context, KEY_ADD_DEVICE);
 
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
     }
 
     public void setWifiEntry(WifiEntry wifiEntry) {

src/com/android/settings/wifi/details2/WifiNetworkDetailsFragment2.java

@@ -140,8 +140,8 @@ public class WifiNetworkDetailsFragment2 extends DashboardFragment implements
                     if (admin == null) {
                         final DevicePolicyManager dpm = (DevicePolicyManager)
                                 getContext().getSystemService(Context.DEVICE_POLICY_SERVICE);
-                        final UserManager um = (UserManager)
+                        final UserManager um =
-                                getContext().getSystemService(Context.USER_SERVICE);
+                                getContext().getSystemService(UserManager.class);
                         final int profileOwnerUserId = Utils.getManagedProfileId(
                                 um, UserHandle.myUserId());
                         if (profileOwnerUserId != UserHandle.USER_NULL) {

src/com/android/settings/wifi/details2/WifiPrivacyPreferenceController2.java

@@ -45,7 +45,7 @@ public class WifiPrivacyPreferenceController2 extends BasePreferenceController i
     public WifiPrivacyPreferenceController2(Context context) {
         super(context, KEY_WIFI_PRIVACY);
 
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
     }
 
     public void setWifiEntry(WifiEntry wifiEntry) {

src/com/android/settings/wifi/dpp/WifiDppUtils.java

@@ -403,8 +403,8 @@ public class WifiDppUtils {
      *                        device security or if lock screen is unlocked
      */
     public static void showLockScreen(Context context, Runnable successRunnable) {
-        final KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(
+        final KeyguardManager keyguardManager = context.getSystemService(
-                Context.KEYGUARD_SERVICE);
+                KeyguardManager.class);
 
         if (keyguardManager.isKeyguardSecure()) {
             final BiometricPrompt.AuthenticationCallback authenticationCallback =

src/com/android/settings/wifi/p2p/WifiP2pPreferenceController.java

@@ -71,7 +71,7 @@ public class WifiP2pPreferenceController extends AbstractPreferenceController
         super(context);
         mWifiManager = wifiManager;
         lifecycle.addObserver(this);
-        mLocationManager = (LocationManager) context.getSystemService(Service.LOCATION_SERVICE);
+        mLocationManager = context.getSystemService(LocationManager.class);
     }
 
     @Override

src/com/android/settings/wifi/p2p/WifiP2pSettings.java

@@ -200,7 +200,7 @@ public class WifiP2pSettings extends DashboardFragment
     public void onActivityCreated(Bundle savedInstanceState) {
         final Activity activity = getActivity();
         if (mWifiP2pManager == null) {
-            mWifiP2pManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
+            mWifiP2pManager = getSystemService(WifiP2pManager.class);
         }
 
         if (mWifiP2pManager != null) {

src/com/android/settings/wifi/qrcode/QrCamera.java

@@ -202,7 +202,7 @@ public class QrCamera extends Handler {
         }
 
         final WindowManager winManager =
-                (WindowManager) mContext.get().getSystemService(Context.WINDOW_SERVICE);
+                mContext.get().getSystemService(WindowManager.class);
         final int rotation = winManager.getDefaultDisplay().getRotation();
         int degrees = 0;
         switch (rotation) {

src/com/android/settings/wifi/tether/TetherService.java

@@ -255,7 +255,7 @@ public class TetherService extends Service {
     }
 
     private void disableTethering(final int tetheringType) {
-        final TetheringManager tm = (TetheringManager) getSystemService(Context.TETHERING_SERVICE);
+        final TetheringManager tm = getSystemService(TetheringManager.class);
         tm.stopTethering(tetheringType);
     }
 

src/com/android/settings/wifi/tether/WifiTetherBasePreferenceController.java

@@ -45,8 +45,8 @@ public abstract class WifiTetherBasePreferenceController extends AbstractPrefere
             OnTetherConfigUpdateListener listener) {
         super(context);
         mListener = listener;
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
-        mTm = (TetheringManager) context.getSystemService(Context.TETHERING_SERVICE);
+        mTm = context.getSystemService(TetheringManager.class);
         mWifiRegexs = mTm.getTetherableWifiRegexs();
     }
 

src/com/android/settings/wifi/tether/WifiTetherPreferenceController.java

@@ -63,7 +63,7 @@ public class WifiTetherPreferenceController extends AbstractPreferenceController
             boolean initSoftApManager) {
         super(context);
         mTetheringManager = context.getSystemService(TetheringManager.class);
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
         mWifiRegexs = mTetheringManager.getTetherableWifiRegexs();
         mLifecycle = lifecycle;
         if (lifecycle != null) {

src/com/android/settings/wifi/tether/WifiTetherSettings.java

@@ -110,7 +110,7 @@ public class WifiTetherSettings extends RestrictedDashboardFragment
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
         mTetherChangeReceiver = new TetherChangeReceiver();
 
         mSSIDPreferenceController = use(WifiTetherSSIDPreferenceController.class);

src/com/android/settings/wifi/tether/WifiTetherSwitchBarController.java

@@ -73,8 +73,8 @@ public class WifiTetherSwitchBarController implements
         mSwitch = mSwitchBar.getSwitch();
         mDataSaverBackend = new DataSaverBackend(context);
         mConnectivityManager =
-                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+                context.getSystemService(ConnectivityManager.class);
-        mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
+        mWifiManager = context.getSystemService(WifiManager.class);
         mSwitchBar.setChecked(mWifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_ENABLED);
         updateWifiSwitch();
     }

tests/robotests/src/com/android/settings/deviceinfo/imei/ImeiInfoPreferenceControllerTest.java

@@ -181,8 +181,8 @@ public class ImeiInfoPreferenceControllerTest {
 
         mController.copy();
 
-        final ClipboardManager clipboard = (ClipboardManager) mContext.getSystemService(
+        final ClipboardManager clipboard = mContext.getSystemService(
-                CLIPBOARD_SERVICE);
+                ClipboardManager.class);
         final CharSequence data = clipboard.getPrimaryClip().getItemAt(0).getText();
         assertThat(data.toString()).isEqualTo(meid);
     }

tests/robotests/src/com/android/settings/network/BluetoothTetherPreferenceControllerTest.java

@@ -57,7 +57,7 @@ public class BluetoothTetherPreferenceControllerTest {
 
         mContext = spy(ApplicationProvider.getApplicationContext());
         mSwitchPreference = spy(SwitchPreference.class);
-        when(mContext.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(mContext.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(mTetheringManager.getTetherableBluetoothRegexs()).thenReturn(new String[] {""});
         mController = new BluetoothTetherPreferenceController(mContext, "BLUETOOTH");
         mController.setTetherEnabler(mTetherEnabler);

tests/robotests/src/com/android/settings/network/EthernetTetherPreferenceControllerTest.java

@@ -62,9 +62,9 @@ public class EthernetTetherPreferenceControllerTest {
     public void setUp() {
         mContext = spy(ApplicationProvider.getApplicationContext());
         mPreference = spy(SwitchPreference.class);
-        when(mContext.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(mContext.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(mTetheringManager.getTetherableIfaces()).thenReturn(new String[]{ETHERNET_REGEX});
-        when(mContext.getSystemService(Context.ETHERNET_SERVICE)).thenReturn(mEthernetManager);
+        when(mContext.getSystemService(EthernetManager.class)).thenReturn(mEthernetManager);
         mController = new EthernetTetherPreferenceController(mContext, "ethernet");
         mController.setTetherEnabler(mTetherEnabler);
         ReflectionHelpers.setField(mController, "mEthernetRegex", ETHERNET_REGEX);

tests/robotests/src/com/android/settings/network/NetworkResetRestrictionCheckerTest.java

@@ -45,14 +45,14 @@ public class NetworkResetRestrictionCheckerTest {
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
-        when(mContext.getSystemService(Context.USER_SERVICE)).thenReturn(mUserManager);
+        when(mContext.getSystemService(UserManager.class)).thenReturn(mUserManager);
         mRestrictionChecker = spy(new NetworkResetRestrictionChecker(mContext));
     }
 
     @Test
     public void testHasRestriction_notAdmin_shouldReturnTrue() {
         final Context context = mock(Context.class);
-        when(context.getSystemService(Context.USER_SERVICE)).thenReturn(mUserManager);
+        when(context.getSystemService(UserManager.class)).thenReturn(mUserManager);
         when(mUserManager.isAdminUser()).thenReturn(false);
 
         assertThat(mRestrictionChecker.hasRestriction()).isTrue();

tests/robotests/src/com/android/settings/network/PrivateDnsPreferenceControllerTest.java

@@ -125,7 +125,7 @@ public class PrivateDnsPreferenceControllerTest {
         mContext = spy(RuntimeEnvironment.application);
         mContentResolver = mContext.getContentResolver();
         mShadowContentResolver = Shadow.extract(mContentResolver);
-        when(mContext.getSystemService(Context.CONNECTIVITY_SERVICE))
+        when(mContext.getSystemService(ConnectivityManager.class))
                 .thenReturn(mConnectivityManager);
         doNothing().when(mConnectivityManager).registerDefaultNetworkCallback(
                 mCallbackCaptor.capture(), nullable(Handler.class));

tests/robotests/src/com/android/settings/network/TetherEnablerTest.java

@@ -95,10 +95,10 @@ public class TetherEnablerTest {
         AtomicReference<BluetoothPan> panReference = spy(AtomicReference.class);
         mSwitchBar = spy(new SwitchBar(context));
         mSwitchWidgetController = spy(new SwitchBarController(mSwitchBar));
-        when(context.getSystemService(Context.WIFI_SERVICE)).thenReturn(mWifiManager);
+        when(context.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
-        when(context.getSystemService(Context.CONNECTIVITY_SERVICE)).thenReturn(
+        when(context.getSystemService(ConnectivityManager.class)).thenReturn(
                 mConnectivityManager);
-        when(context.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(context.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(context.getSystemService(Context.NETWORK_POLICY_SERVICE)).thenReturn(
                 mNetworkPolicyManager);
         when(mTetheringManager.getTetherableIfaces()).thenReturn(new String[0]);

tests/robotests/src/com/android/settings/network/UsbTetherPreferenceControllerTest.java

@@ -55,7 +55,7 @@ public class UsbTetherPreferenceControllerTest {
         MockitoAnnotations.initMocks(this);
 
         mContext = spy(ApplicationProvider.getApplicationContext());
-        when(mContext.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(mContext.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(mTetheringManager.getTetherableUsbRegexs()).thenReturn(new String[]{""});
         mController = new UsbTetherPreferenceController(mContext, "USB");
         mController.setTetherEnabler(mTetherEnabler);

tests/robotests/src/com/android/settings/network/WifiTetherDisablePreferenceControllerTest.java

@@ -100,7 +100,7 @@ public class WifiTetherDisablePreferenceControllerTest {
 
         mContext = spy(ApplicationProvider.getApplicationContext());
         mPreference = spy(SwitchPreference.class);
-        when(mContext.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(mContext.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(mTetheringManager.getTetherableWifiRegexs()).thenReturn(new String[]{""});
         mController = new WifiTetherDisablePreferenceController(mContext, WIFI_TETHER_DISABLE_KEY);
         mController.setTetherEnabler(mTetherEnabler);

tests/robotests/src/com/android/settings/network/telephony/MobileDataSliceTest.java

@@ -74,7 +74,7 @@ public class MobileDataSliceTest {
         MockitoAnnotations.initMocks(this);
         mContext = spy(RuntimeEnvironment.application);
 
-        doReturn(mTelephonyManager).when(mContext).getSystemService(Context.TELEPHONY_SERVICE);
+        doReturn(mTelephonyManager).when(mContext).getSystemService(TelephonyManager.class);
         doReturn(mSubscriptionManager).when(mContext).getSystemService(SubscriptionManager.class);
         doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);
         doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(anyInt());

tests/robotests/src/com/android/settings/network/telephony/NetworkSelectSettingsTest.java

@@ -77,7 +77,7 @@ public class NetworkSelectSettingsTest {
         MockitoAnnotations.initMocks(this);
 
         mContext = spy(RuntimeEnvironment.application);
-        when(mContext.getSystemService(Context.TELEPHONY_SERVICE)).thenReturn(mTelephonyManager);
+        when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
         when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
         when(mTelephonyManager.createForSubscriptionId(SUB_ID)).thenReturn(mTelephonyManager);
 

tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java

@@ -66,7 +66,7 @@ public class NetworkRequestDialogActivityTest {
         mActivity = spy(activity);
 
         mWifiManager = mock(WifiManager.class);
-        when(mActivity.getSystemService(Context.WIFI_SERVICE)).thenReturn(mWifiManager);
+        when(mActivity.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
     }
 
     @Test

tests/robotests/src/com/android/settings/wifi/WifiEnablerTest.java

@@ -53,7 +53,7 @@ public class WifiEnablerTest {
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
-        when(mContext.getSystemService(Context.WIFI_SERVICE)).thenReturn(mWifiManager);
+        when(mContext.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
         mEnabler = new WifiEnabler(mContext, mock(SwitchWidgetController.class),
                 mock(MetricsFeatureProvider.class), mConnectivityManager);
     }

tests/robotests/src/com/android/settings/wifi/WifiMasterSwitchPreferenceControllerTest.java

@@ -78,7 +78,7 @@ public class WifiMasterSwitchPreferenceControllerTest {
         when(mContext.getSystemService(NetworkScoreManager.class)).thenReturn(mNetworkScoreManager);
         mController = new WifiMasterSwitchPreferenceController(mContext, mMetricsFeatureProvider);
         when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
-        when(mContext.getSystemService(Context.WIFI_SERVICE)).thenReturn(mWifiManager);
+        when(mContext.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
         when(mWifiManager.getWifiState()).thenReturn(WifiManager.WIFI_STATE_DISABLED);
     }
 

tests/robotests/src/com/android/settings/wifi/WifiSettings2Test.java

@@ -209,7 +209,7 @@ public class WifiSettings2Test {
         final Resources.Theme theme = mContext.getTheme();
         when(activity.getTheme()).thenReturn(theme);
         UserManager userManager = mock(UserManager.class);
-        when(activity.getSystemService(Context.USER_SERVICE))
+        when(activity.getSystemService(UserManager.class))
                 .thenReturn(userManager);
 
         when(mWifiSettings2.findPreference(WifiSettings2.PREF_KEY_DATA_USAGE))

tests/robotests/src/com/android/settings/wifi/calling/DisclaimerItemListAdapterTest.java

@@ -77,7 +77,7 @@ public class DisclaimerItemListAdapterTest {
 
         when(mLayoutInflater.inflate(anyInt(), anyObject(), anyBoolean())).thenReturn(mView);
         when(mViewGroup.getContext()).thenReturn(mContext);
-        when(mViewGroup.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).thenReturn(
+        when(mViewGroup.getContext().getSystemService(LayoutInflater.class)).thenReturn(
                 mLayoutInflater);
         when(mView.findViewById(ID_DISCLAIMER_ITEM_TITLE)).thenReturn(mTestView);
         when(mView.findViewById(ID_DISCLAIMER_ITEM_DESCRIPTION)).thenReturn(mDescView);

tests/robotests/src/com/android/settings/wifi/calling/EmergencyCallLimitationDisclaimerTest.java

@@ -54,7 +54,7 @@ public class EmergencyCallLimitationDisclaimerTest {
         mContext = spy(RuntimeEnvironment.application);
 
         doReturn(mCarrierConfigManager).when(mContext).getSystemService(
-                Context.CARRIER_CONFIG_SERVICE);
+                CarrierConfigManager.class);
         when(mCarrierConfigManager.getConfigForSubId(anyInt())).thenReturn(mBundle);
 
         doReturn(getSharedPreferences()).when(mContext).getSharedPreferences(anyString(), anyInt());

tests/robotests/src/com/android/settings/wifi/calling/LocationPolicyDisclaimerTest.java

@@ -54,7 +54,7 @@ public class LocationPolicyDisclaimerTest {
         mContext = spy(RuntimeEnvironment.application);
 
         doReturn(mCarrierConfigManager).when(mContext).getSystemService(
-                Context.CARRIER_CONFIG_SERVICE);
+                CarrierConfigManager.class);
         when(mCarrierConfigManager.getConfigForSubId(anyInt())).thenReturn(mBundle);
         doReturn(getSharedPreferences()).when(mContext).getSharedPreferences(anyString(), anyInt());
     }

tests/robotests/src/com/android/settings/wifi/tether/WifiTetherApBandPreferenceControllerTest.java

@@ -73,8 +73,8 @@ public class WifiTetherApBandPreferenceControllerTest {
         MockitoAnnotations.initMocks(this);
         mContext = spy(RuntimeEnvironment.application);
         mPreference = new ListPreference(RuntimeEnvironment.application);
-        when(mContext.getSystemService(Context.WIFI_SERVICE)).thenReturn(mWifiManager);
+        when(mContext.getSystemService(WifiManager.class)).thenReturn(mWifiManager);
-        when(mContext.getSystemService(Context.TETHERING_SERVICE)).thenReturn(mTetheringManager);
+        when(mContext.getSystemService(TetheringManager.class)).thenReturn(mTetheringManager);
         when(mTetheringManager.getTetherableWifiRegexs()).thenReturn(new String[]{"1", "2"});
         when(mContext.getResources()).thenReturn(RuntimeEnvironment.application.getResources());
         when(mScreen.findPreference(anyString())).thenReturn(mPreference);

tests/robotests/src/com/android/settings/wifi/tether/WifiTetherSettingsTest.java

@@ -79,10 +79,10 @@ public class WifiTetherSettingsTest {
 
         MockitoAnnotations.initMocks(this);
         doReturn(mConnectivityManager)
-                .when(mContext).getSystemService(Context.CONNECTIVITY_SERVICE);
+                .when(mContext).getSystemService(ConnectivityManager.class);
-        doReturn(mTetheringManager).when(mContext).getSystemService(Context.TETHERING_SERVICE);
+        doReturn(mTetheringManager).when(mContext).getSystemService(TetheringManager.class);
         doReturn(WIFI_REGEXS).when(mTetheringManager).getTetherableWifiRegexs();
-        doReturn(mUserManager).when(mContext).getSystemService(Context.USER_SERVICE);
+        doReturn(mUserManager).when(mContext).getSystemService(UserManager.class);
 
         mWifiTetherSettings = new WifiTetherSettings();
     }
@@ -131,7 +131,7 @@ public class WifiTetherSettingsTest {
         when(settings.getContext()).thenReturn(mContext);
         final Resources.Theme theme = mContext.getTheme();
         when(activity.getTheme()).thenReturn(theme);
-        when(activity.getSystemService(Context.USER_SERVICE)).thenReturn(mUserManager);
+        when(activity.getSystemService(UserManager.class)).thenReturn(mUserManager);
         doNothing().when(settings)
             .onCreatePreferences(any(Bundle.class), nullable(String.class));
         final FakeFeatureFactory fakeFeatureFactory = FakeFeatureFactory.setupForTest();

tests/unit/src/com/android/settings/network/EnabledNetworkModePreferenceControllerTest.java

@@ -94,7 +94,7 @@ public class EnabledNetworkModePreferenceControllerTest {
 
         when(mContext.getSystemService(CarrierConfigManager.class)).thenReturn(
                 mCarrierConfigManager);
-        when(mContext.getSystemService(Context.TELEPHONY_SERVICE)).thenReturn(mTelephonyManager);
+        when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
         when(mContext.getSystemService(TelephonyManager.class)).thenReturn(mTelephonyManager);
         doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);
         doReturn(mInvalidTelephonyManager).when(mTelephonyManager).createForSubscriptionId(

tests/unit/src/com/android/settings/network/telephony/MobileDataPreferenceControllerTest.java

@@ -73,7 +73,7 @@ public class MobileDataPreferenceControllerTest {
         MockitoAnnotations.initMocks(this);
 
         mContext = spy(ApplicationProvider.getApplicationContext());
-        doReturn(mTelephonyManager).when(mContext).getSystemService(Context.TELEPHONY_SERVICE);
+        doReturn(mTelephonyManager).when(mContext).getSystemService(TelephonyManager.class);
 
         when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);
         doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);