Automatically adjust content inset after view controller did layout subviews

React/Views/RCTAutoInsetsProtocol.h

@@ -17,4 +17,13 @@
 @property (nonatomic, assign, readwrite) UIEdgeInsets contentInset;
 @property (nonatomic, assign, readwrite) BOOL automaticallyAdjustContentInsets;
 
+/**
+ * Automatically adjusted content inset depends on view controller's top and bottom
+ * layout guides so if you've changed one of them (e.g. after rotation or manually) you should call this method
+ * to recalculate and refresh content inset.
+ * To handle case with changing navigation bar height call this method from viewDidLayoutSubviews:
+ * of your view controller.
+ */
+- (void)refreshContentInset;
+
 @end

React/Views/RCTScrollView.m

@@ -460,10 +460,6 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
   _scrollView.frame = self.bounds;
   _scrollView.contentOffset = originalOffset;
 
-  [RCTView autoAdjustInsetsForView:self
-                    withScrollView:_scrollView
-                      updateOffset:YES];
-
   [self updateClippedSubviews];
 }
 
@@ -523,6 +519,13 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
   [_scrollView zoomToRect:rect animated:animated];
 }
 
+- (void)refreshContentInset
+{
+  [RCTView autoAdjustInsetsForView:self
+                    withScrollView:_scrollView
+                      updateOffset:YES];
+}
+
 #pragma mark - ScrollView delegate
 
 #define RCT_SCROLL_EVENT_HANDLER(delegateMethod, eventName) \

React/Views/RCTWebView.m

@@ -95,9 +95,6 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
 {
   [super layoutSubviews];
   _webView.frame = self.bounds;
-  [RCTView autoAdjustInsetsForView:self
-                    withScrollView:_webView.scrollView
-                      updateOffset:YES];
 }
 
 - (void)setContentInset:(UIEdgeInsets)contentInset
@@ -133,6 +130,13 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
   return event;
 }
 
+- (void)refreshContentInset
+{
+  [RCTView autoAdjustInsetsForView:self
+                    withScrollView:_webView.scrollView
+                      updateOffset:YES];
+}
+
 #pragma mark - UIWebViewDelegate methods
 
 - (BOOL)webView:(__unused UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request

React/Views/RCTWrapperViewController.m

@@ -16,13 +16,15 @@
 #import "RCTUtils.h"
 #import "RCTViewControllerProtocol.h"
 #import "UIView+React.h"
+#import "RCTAutoInsetsProtocol.h"
 
 @implementation RCTWrapperViewController
 {
   UIView *_wrapperView;
   UIView *_contentView;
-  CGFloat _previousTopLayout;
+  RCTEventDispatcher *_eventDispatcher;
-  CGFloat _previousBottomLayout;
+  CGFloat _previousTopLayoutLength;
+  CGFloat _previousBottomLayoutLength;
 }
 
 @synthesize currentTopLayoutGuide = _currentTopLayoutGuide;
@@ -58,6 +60,32 @@ RCT_NOT_IMPLEMENTED(- (instancetype)initWithCoder:(NSCoder *)aDecoder)
   _currentBottomLayoutGuide = self.bottomLayoutGuide;
 }
 
+static BOOL RCTFindScrollViewAndRefreshContentInsetInView(UIView *view)
+{
+  if ([view conformsToProtocol:@protocol(RCTAutoInsetsProtocol)]) {
+    [(id <RCTAutoInsetsProtocol>) view refreshContentInset];
+    return YES;
+  }
+  for (UIView *subview in view.subviews) {
+    if (RCTFindScrollViewAndRefreshContentInsetInView(subview)) {
+      return YES;
+    }
+  }
+  return NO;
+}
+
+- (void)viewDidLayoutSubviews
+{
+  [super viewDidLayoutSubviews];
+
+  if (_previousTopLayoutLength != _currentTopLayoutGuide.length ||
+      _previousBottomLayoutLength != _currentBottomLayoutGuide.length) {
+    RCTFindScrollViewAndRefreshContentInsetInView(_contentView);
+    _previousTopLayoutLength = _currentTopLayoutGuide.length;
+    _previousBottomLayoutLength = _currentBottomLayoutGuide.length;
+  }
+}
+
 static UIView *RCTFindNavBarShadowViewInView(UIView *view)
 {
   if ([view isKindOfClass:[UIImageView class]] && view.bounds.size.height <= 1) {