diff --git a/demo/src/NavbarDemo.ts b/demo/src/NavbarDemo.ts
index 5f794790..01e8a7f2 100644
--- a/demo/src/NavbarDemo.ts
+++ b/demo/src/NavbarDemo.ts
@@ -1,4 +1,4 @@
-import { Group, Panel, navbar, text, gravity, Color, Stack, LayoutSpec, list, NativeCall, listItem, log, vlayout, Gravity, hlayout, Text, scroller, layoutConfig, image, IView, IVLayout, ScaleType, modal, IText, network } from "doric";
+import { Group, Panel, navbar, text, gravity, Color, Stack, LayoutSpec, list, NativeCall, listItem, log, vlayout, Gravity, hlayout, Text, scroller, layoutConfig, image, IView, IVLayout, ScaleType, modal, IText, network, navigator } from "doric";
 import { title, label, colors } from "./utils";
 
 @Entry
@@ -62,6 +62,17 @@ class NavbarDemo extends Panel {
                         })
                 }
             } as IText),
+            label('Pop').apply({
+                width: 200,
+                height: 50,
+                bgColor: colors[0],
+                textSize: 30,
+                textColor: Color.WHITE,
+                layoutConfig: layoutConfig().exactly(),
+                onClick: () => {
+                    navigator(context).pop()
+                }
+            } as IText),
         ]).apply({
             layoutConfig: layoutConfig().atmost().h(LayoutSpec.WRAP_CONTENT),
             gravity: gravity().center(),
diff --git a/iOS/Example/Example/QRScanViewController.m b/iOS/Example/Example/QRScanViewController.m
index b6baedca..81aa3292 100644
--- a/iOS/Example/Example/QRScanViewController.m
+++ b/iOS/Example/Example/QRScanViewController.m
@@ -86,7 +86,7 @@ - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:
         NSString *result = qrObject.stringValue;
         NSLog(@"Scan result is %@", result);
         [[DoricDriver instance] connectDevKit:[NSString stringWithFormat:@"ws://%@:7777", result]];
-        showToast([NSString stringWithFormat:@"Connected to %@", result], BOTTOM);
+        ShowToast([NSString stringWithFormat:@"Connected to %@", result], BOTTOM);
         [self.navigationController popViewControllerAnimated:NO];
     }
 }
diff --git a/iOS/Pod/Classes/DoricPanel.m b/iOS/Pod/Classes/DoricPanel.m
index 1ad24ff2..a1cf9117 100644
--- a/iOS/Pod/Classes/DoricPanel.m
+++ b/iOS/Pod/Classes/DoricPanel.m
@@ -25,11 +25,19 @@ @implementation DoricPanel
 - (void)config:(NSString *)script alias:(NSString *)alias {
     self.doricContext = [[[DoricContext alloc] initWithScript:script source:alias] also:^(DoricContext *it) {
         [it.rootNode setupRootView:[[DoricStackView new] also:^(DoricStackView *it) {
-            it.width = self.view.width;
-            it.height = self.view.height;
             [self.view addSubview:it];
         }]];
-        [it initContextWithWidth:self.view.width height:self.view.height];
+    }];
+}
+
+- (void)viewWillLayoutSubviews {
+    [super viewWillLayoutSubviews];
+    [self.doricContext.rootNode.view also:^(DoricStackView *it) {
+        if (it.width != self.view.width || it.height != self.view.height) {
+            it.width = self.view.width;
+            it.height = self.view.height;
+            [self.doricContext initContextWithWidth:it.width height:it.height];
+        }
     }];
 }
 
diff --git a/iOS/Pod/Classes/DoricViewController.m b/iOS/Pod/Classes/DoricViewController.m
index ca021b7f..637b5b62 100644
--- a/iOS/Pod/Classes/DoricViewController.m
+++ b/iOS/Pod/Classes/DoricViewController.m
@@ -23,10 +23,16 @@
 #import "DoricPanel.h"
 #import "UIView+Doric.h"
 #import "DoricExtensions.h"
+#import "DoricUtil.h"
+
+@interface DoricViewController ()
+@property(nonatomic, strong) DoricPanel *doricPanel;
+@end
 
 @implementation DoricViewController
 - (instancetype)initWithScheme:(NSString *)scheme alias:(NSString *)alias {
     if (self = [super init]) {
+        self.edgesForExtendedLayout = UIRectEdgeNone;
         DoricAsyncResult <NSString *> *result = [DoricJSLoaderManager.instance request:scheme];
         result.resultCallback = ^(NSString *result) {
             dispatch_async(dispatch_get_main_queue(), ^{
@@ -34,20 +40,26 @@ - (instancetype)initWithScheme:(NSString *)scheme alias:(NSString *)alias {
                 [panel.view also:^(UIView *it) {
                     it.backgroundColor = [UIColor whiteColor];
                     it.width = self.view.width;
-                    it.height = self.view.height - 88;
-                    it.top = 88;
+                    it.height = self.view.height;
                 }];
                 [self.view addSubview:panel.view];
                 [self addChildViewController:panel];
                 [panel config:result alias:alias];
                 panel.doricContext.navigator = self;
                 panel.doricContext.navBar = self;
+                self.doricPanel = panel;
             });
         };
     }
     return self;
 }
 
+- (void)viewWillLayoutSubviews {
+    [super viewWillLayoutSubviews];
+    self.doricPanel.view.width = self.view.width;
+    self.doricPanel.view.height = self.view.height;
+}
+
 - (void)doric_navigator_push:(NSString *)scheme alias:(NSString *)alias animated:(BOOL)animated {
     DoricViewController *viewController = [[DoricViewController alloc] initWithScheme:scheme alias:alias];
     [self.navigationController pushViewController:viewController animated:animated];
@@ -70,7 +82,7 @@ - (void)doric_navBar_setTitle:(NSString *)title {
 }
 
 - (void)doric_navBar_setBackgroundColor:(UIColor *)color {
-    [self.navigationController.navigationBar setBackgroundColor:color];
+    [self.navigationController.navigationBar setBackgroundImage:UIImageWithColor(color) forBarMetrics:UIBarMetricsDefault];
 }
 
 
diff --git a/iOS/Pod/Classes/Plugin/DoricModalPlugin.m b/iOS/Pod/Classes/Plugin/DoricModalPlugin.m
index e9925e34..77944f23 100644
--- a/iOS/Pod/Classes/Plugin/DoricModalPlugin.m
+++ b/iOS/Pod/Classes/Plugin/DoricModalPlugin.m
@@ -32,7 +32,7 @@ - (void)toast:(NSDictionary *)dic withPromise:(DoricPromise *)promise {
         [dic[@"gravity"] also:^(NSNumber *it) {
             gravity = (DoricGravity) [it integerValue];
         }];
-        showToast(dic[@"msg"], gravity);
+        ShowToast(dic[@"msg"], gravity);
     });
 }
 
diff --git a/iOS/Pod/Classes/Util/DoricUtil.h b/iOS/Pod/Classes/Util/DoricUtil.h
index 8931970d..ec67ceee 100644
--- a/iOS/Pod/Classes/Util/DoricUtil.h
+++ b/iOS/Pod/Classes/Util/DoricUtil.h
@@ -37,4 +37,6 @@ NSBundle *_Nonnull DoricBundle(void);
 #define DC_UNLOCK(lock) dispatch_semaphore_signal(lock);
 #endif
 
-void showToast(NSString *_Nonnull text, DoricGravity gravity);
\ No newline at end of file
+void ShowToast(NSString *_Nonnull text, DoricGravity gravity);
+
+UIImage *_Nonnull UIImageWithColor(UIColor *color);
\ No newline at end of file
diff --git a/iOS/Pod/Classes/Util/DoricUtil.m b/iOS/Pod/Classes/Util/DoricUtil.m
index 5d6f5cc2..bf41f236 100644
--- a/iOS/Pod/Classes/Util/DoricUtil.m
+++ b/iOS/Pod/Classes/Util/DoricUtil.m
@@ -48,7 +48,7 @@ void DoricLog(NSString *_Nonnull format, ...) {
 }
 
 
-void showToast(NSString *text, DoricGravity gravity) {
+void ShowToast(NSString *text, DoricGravity gravity) {
     UIView *superView = [UIApplication sharedApplication].windows.lastObject;
     UILabel *label = [[UILabel alloc] init];
     label.font = [UIFont systemFontOfSize:20.f];
@@ -74,4 +74,15 @@ void showToast(NSString *text, DoricGravity gravity) {
     dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t) (2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
         [label removeFromSuperview];
     });
-}
\ No newline at end of file
+}
+
+UIImage *UIImageWithColor(UIColor *color) {
+    CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
+    UIGraphicsBeginImageContext(rect.size);
+    CGContextRef context = UIGraphicsGetCurrentContext();
+    CGContextSetFillColorWithColor(context, [color CGColor]);
+    CGContextFillRect(context, rect);
+    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+    return image;
+}