corrected invalid signatures

notifications/ios/applepushnotifications.cpp

@@ -32,7 +32,7 @@ ApplePushNotifications::ApplePushNotifications()
     connect( mNotificationInstance, &IosNotificationReceiver::switchChannelByName, this, &ApplePushNotifications::onSwitchRequest );
 }
 
-void ApplePushNotifications::receiveMessage( QString pServer, QString pRid, QString pName, QString pType )
+void ApplePushNotifications::receiveMessage(const QString &pServer, const QString &pRid,const QString &pName,const QString &pType )
 {
     emit messageReceived( pServer, pRid, pName, pType );
 }
@@ -60,7 +60,7 @@ void ApplePushNotifications::checkForPendingMessages()
     emit switchChannelByName( mRoomName );
 }
 
-void ApplePushNotifications::onSwitchRequest( QString pName )
+void ApplePushNotifications::onSwitchRequest( const QString &pName )
 {
     mRoomName = pName;
     emit switchChannelByName( pName );

notifications/notificationabstract.h

@@ -46,7 +46,7 @@ class NotificationAbstract : public QObject
     signals:
         void tokenReceived( QString pToken );
         void messageReceived( QString pServer, QString pRid, QString pName, QString pType );
-        void switchChannelByName( QString &pChannel );
+        void switchChannelByName( QString pChannel );
 
 };