NativeScript
diff --git a/‎tns-core-modules/ui/core/view-base/view-base.ts‎
Lines changed: 2 additions & 2 deletions b/‎tns-core-modules/ui/core/view-base/view-base.ts‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎tns-core-modules/ui/core/view/view.android.ts‎
Lines changed: 2 additions & 2 deletions b/‎tns-core-modules/ui/core/view/view.android.ts‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎tns-core-modules/ui/frame/frame.android.ts‎
Lines changed: 18 additions & 3 deletions b/‎tns-core-modules/ui/frame/frame.android.ts‎
Lines changed: 18 additions & 3 deletions
diff --git a/‎tns-core-modules/ui/styling/style-scope.ts‎
Lines changed: 1 addition & 1 deletion b/‎tns-core-modules/ui/styling/style-scope.ts‎
Lines changed: 1 addition & 1 deletion
@@ -595,13 +595,13 @@ export abstract class ViewBase extends Observable implements ViewBaseDefinition
     }
 
     public loadView(view: ViewBase): void {
-        if (!view.isLoaded) {
+        if (view && !view.isLoaded) {
             view.callLoaded();
         }
     }
 
     public unloadView(view: ViewBase): void {
-        if (view.isLoaded) {
+        if (view && view.isLoaded) {
             view.callUnloaded();
         }
     }
 
@@ -185,7 +185,7 @@ function initializeDialogFragment() {
             }
 
             const owner = this.owner;
-            if (!owner.isLoaded) {
+            if (owner && !owner.isLoaded) {
                 owner.callLoaded();
             }
 
@@ -201,7 +201,7 @@ function initializeDialogFragment() {
             }
 
             const owner = this.owner;
-            if (owner.isLoaded) {
+            if (owner && owner.isLoaded) {
                 owner.callUnloaded();
             }
         }
 
@@ -9,7 +9,7 @@ import { Page } from "../page";
 import * as application from "../../application";
 import {
     FrameBase, stack, goBack, View, Observable,
-    traceEnabled, traceWrite, traceCategories
+    traceEnabled, traceWrite, traceCategories, traceError
 } from "./frame-common";
 
 import {
@@ -720,8 +720,23 @@ class FragmentCallbacksImplementation implements AndroidFragmentCallbacks {
         }
 
         const entry = this.entry;
+        if (!entry) {
+            traceError(`${fragment}.onCreateView: entry is null or undefined`);
+            return null;
+        }
+
         const page = entry.resolvedPage;
+        if (!page) {
+            traceError(`${fragment}.onCreateView: entry has no resolvedPage`);
+            return null;
+        }
+
         const frame = this.frame;
+        if (!frame) {
+            traceError(`${fragment}.onCreateView: this.frame is null or undefined`);
+            return null;
+        }
+
         if (page.parent === frame) {
             // If we are navigating to a page that was destroyed
             // reinitialize its UI.
@@ -730,12 +745,12 @@ class FragmentCallbacksImplementation implements AndroidFragmentCallbacks {
                 page._setupUI(context);
             }
         } else {
-            if (!this.frame._styleScope) {
+            if (!frame._styleScope) {
                 // Make sure page will have styleScope even if parents don't.
                 page._updateStyleScope();
             }
 
-            this.frame._addView(page);
+            frame._addView(page);
         }
 
         if (frame.isLoaded && !page.isLoaded) {
 
@@ -328,7 +328,7 @@ export class CssState {
      * As a result, at some point in time, the selectors matched have to be requerried from the style scope and applied to the view.
      */
     public onChange(): void {
-        if (this.view.isLoaded) {
+        if (this.view && this.view.isLoaded) {
             this.unsubscribeFromDynamicUpdates();
             this.updateMatch();
             this.subscribeForDynamicUpdates();
Original file line number	Diff line number	Diff line change
@@ -595,13 +595,13 @@ export abstract class ViewBase extends Observable implements ViewBaseDefinition
595	595	}
596	596
597	597	public loadView(view: ViewBase): void {
598		- if (!view.isLoaded) {
	598	+ if (view && !view.isLoaded) {
599	599	view.callLoaded();
600	600	}
601	601	}
602	602
603	603	public unloadView(view: ViewBase): void {
604		- if (view.isLoaded) {
	604	+ if (view && view.isLoaded) {
605	605	view.callUnloaded();
606	606	}
607	607	}
Original file line number	Diff line number	Diff line change
@@ -185,7 +185,7 @@ function initializeDialogFragment() {
185	185	}
186	186
187	187	const owner = this.owner;
188		- if (!owner.isLoaded) {
	188	+ if (owner && !owner.isLoaded) {
189	189	owner.callLoaded();
190	190	}
191	191
@@ -201,7 +201,7 @@ function initializeDialogFragment() {
201	201	}
202	202
203	203	const owner = this.owner;
204		- if (owner.isLoaded) {
	204	+ if (owner && owner.isLoaded) {
205	205	owner.callUnloaded();
206	206	}
207	207	}