Navigation between screens without previous states showing.

lib/screens/splash.dart

@@ -28,13 +28,28 @@ class SplashScreen extends BaseScreen {
 class _SplashScreenState extends BaseState<SplashScreen> {
 
   _SplashScreenState(SqliteHelper helper, String app) : super(helper, app);
+  bool a = false;
+
+  @override
+  void initState() {
+
+    print('init state!');
+
+    new Future.delayed(const Duration(milliseconds: 1000), () {
+      showNextScreen();
+      a = true;
+    });
+
+    super.initState();
+  }
 
   @override
   Widget build(BuildContext ctx) {
-    new Future.delayed(const Duration(milliseconds: 1000), () {
-      showNextScreen();
-    });
-    return getScreenContent();
+    return a ? new Container(
+      decoration: new BoxDecoration(
+        image: new DecorationImage(
+          image: new ExactAssetImage(Resources.getSplash(nullq)),
+          fit:  BoxFit.cover))) : getScreenContent();
   }
 
   @override
@@ -151,6 +166,7 @@ class _SplashScreenState extends BaseState<SplashScreen> {
     // Канал ловит вызовы методов из "нативной" части приложения.
     // Могут быть вызваны либо exit либо faq, либо purchase.
     platform.setMethodCallHandler((MethodCall call) {
+      print(this.toString());
       if (call.method == 'findUser') {
         String cardPhone = call.arguments[0];
         var userResponse = getUser(call.arguments[1], cardPhone, token);
@@ -190,18 +206,7 @@ class _SplashScreenState extends BaseState<SplashScreen> {
         String card = call.arguments[1];
         print('$userString, $card');
 
-        new Future.delayed(const Duration(milliseconds: 200), () {
-          var route = new MaterialPageRoute<bool>(
-            builder: (BuildContext context) => new PurchaseScreen(helper, app, userString, card),
-            fullscreenDialog: true);
-          Navigator.of(context).push(route).then((b) {
-            if (b) {
-              setState(() {
-                print('restart scanner!');
-              });
-            }
-          });
-        });
+        startScanner(token, userString, card);
       }
     });
 
@@ -221,6 +226,17 @@ class _SplashScreenState extends BaseState<SplashScreen> {
     });
   }
 
+  startScanner(String token, String userString, String card) {
+    new Future.delayed(const Duration(milliseconds: 200), () {
+      var route = new MaterialPageRoute<bool>(
+        builder: (BuildContext context) => new PurchaseScreen(helper, app, userString, card), fullscreenDialog: true);
+        Navigator.of(context).push(route).then((b) {
+          print('purchase closed: $b');
+          _initAndStartScanner(context, app, token, helper);
+      });
+    });
+  }
+
   Future<Response> getUser(String type, String cardPhone, String token) {
     try {
       switch (type) {