Refine the plural strings design in Settings

- Use MessageFormat instead of getQuantityString().

Bug: 199229953
Test: manual test
See b/199229953#comment2 for a screenshot result.

Change-Id: I4fc9cecc83f503203ec5dbc1af638036d7026e07

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

@@ -37,6 +37,7 @@ import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnStart;
 import com.android.settingslib.core.lifecycle.events.OnStop;
 import com.android.settingslib.wifi.WifiEnterpriseRestrictionUtils;
+import com.android.settingslib.wifi.WifiUtils;
 
 import java.util.List;
 
@@ -136,8 +137,8 @@ public class WifiTetherPreferenceController extends AbstractPreferenceController
                         if (mPreference != null
                                 && mSoftApState == WifiManager.WIFI_AP_STATE_ENABLED) {
                             // Only show the number of clients when state is on
-                            mPreference.setSummary(mContext.getResources().getQuantityString(
-                                    R.plurals.wifi_tether_connected_summary, clients.size(),
+                            mPreference.setSummary(
+                                    WifiUtils.getWifiTetherSummaryForConnectedDevices(mContext,
                                             clients.size()));
                         }
                     }