Fix back button on iOS 13 (#5703)

lib/ios/RNNComponentPresenter.m

@@ -28,9 +28,6 @@
 
 - (void)applyOptionsOnWillMoveToParentViewController:(RNNNavigationOptions *)options {
 	[super applyOptionsOnWillMoveToParentViewController:options];
-	UIViewController* viewController = self.boundViewController;
-	RNNNavigationOptions *withDefault = [options withDefault:[self defaultOptions]];
-	[viewController setBackButtonIcon:[withDefault.topBar.backButton.icon getWithDefaultValue:nil] withColor:[withDefault.topBar.backButton.color getWithDefaultValue:nil] title:[withDefault.topBar.backButton.showTitle getWithDefaultValue:YES] ? [withDefault.topBar.backButton.title getWithDefaultValue:nil] : @""];
 }
 
 - (void)applyOptions:(RNNNavigationOptions *)options {
@@ -158,12 +155,6 @@
 	}
 
 	[self setTitleViewWithSubtitle:withDefault];
-	
-	if (options.topBar.backButton.hasValue) {
-		UIViewController *lastViewControllerInStack = viewController.navigationController.viewControllers.count > 1 ? viewController.navigationController.viewControllers[viewController.navigationController.viewControllers.count - 2] : viewController.navigationController.topViewController;
-	    RNNNavigationOptions * resolvedOptions	= (RNNNavigationOptions *) [[currentOptions overrideOptions:options] withDefault:[self defaultOptions]];
-		[lastViewControllerInStack applyBackButton:resolvedOptions.topBar.backButton];
-	}
 }
 
 - (void)removeTitleComponentIfNeeded:(RNNNavigationOptions *)options {

lib/ios/RNNStackPresenter.m

@@ -44,6 +44,7 @@
 	[stack setNavigationBarLargeTitleFontFamily:[withDefault.topBar.largeTitle.fontFamily getWithDefaultValue:nil] fontSize:[withDefault.topBar.largeTitle.fontSize getWithDefaultValue:nil] fontWeight:[withDefault.topBar.largeTitle.fontWeight getWithDefaultValue:nil] color:[withDefault.topBar.largeTitle.color getWithDefaultValue:nil]];
 	[stack setNavigationBarFontFamily:[withDefault.topBar.title.fontFamily getWithDefaultValue:nil] fontSize:[withDefault.topBar.title.fontSize getWithDefaultValue:nil] fontWeight:[withDefault.topBar.title.fontWeight getWithDefaultValue:nil] color:[withDefault.topBar.title.color getWithDefaultValue:nil]];
 	[stack setBackButtonColor:[withDefault.topBar.backButton.color getWithDefaultValue:nil]];
+    [stack setBackButtonIcon:[withDefault.topBar.backButton.icon getWithDefaultValue:nil] withColor:[withDefault.topBar.backButton.color getWithDefaultValue:nil] title:[withDefault.topBar.backButton.title getWithDefaultValue:nil] showTitle:[withDefault.topBar.backButton.showTitle getWithDefaultValue:YES]];
 }
 
 - (void)applyOptionsOnViewDidLayoutSubviews:(RNNNavigationOptions *)options {
@@ -59,6 +60,7 @@
 	[navigationController setTopBarBackgroundColor:[withDefault.topBar.background.color getWithDefaultValue:nil]];
 	[navigationController setNavigationBarFontFamily:[withDefault.topBar.title.fontFamily getWithDefaultValue:nil] fontSize:[withDefault.topBar.title.fontSize getWithDefaultValue:nil] fontWeight:[withDefault.topBar.title.fontWeight getWithDefaultValue:nil] color:[withDefault.topBar.title.color getWithDefaultValue:nil]];
 	[navigationController setNavigationBarLargeTitleVisible:[withDefault.topBar.largeTitle.visible getWithDefaultValue:NO]];
+    [navigationController setBackButtonIcon:[withDefault.topBar.backButton.icon getWithDefaultValue:nil] withColor:[withDefault.topBar.backButton.color getWithDefaultValue:nil] title:[withDefault.topBar.backButton.title getWithDefaultValue:nil] showTitle:[withDefault.topBar.backButton.showTitle getWithDefaultValue:YES]];
 }
 
 - (void)mergeOptions:(RNNNavigationOptions *)options resolvedOptions:(RNNNavigationOptions *)resolvedOptions {
@@ -135,6 +137,10 @@
 	if (options.topBar.background.component.name.hasValue) {
 		[self setCustomNavigationComponentBackground:options perform:nil];
 	}
+    
+    if (options.topBar.backButton.hasValue) {
+        [stack setBackButtonIcon:[withDefault.topBar.backButton.icon getWithDefaultValue:nil] withColor:[withDefault.topBar.backButton.color getWithDefaultValue:nil] title:[withDefault.topBar.backButton.title getWithDefaultValue:nil] showTitle:[withDefault.topBar.backButton.showTitle getWithDefaultValue:YES]];
+    }
 }
 
 - (void)renderComponents:(RNNNavigationOptions *)options perform:(RNNReactViewReadyCompletionBlock)readyBlock {

lib/ios/UINavigationBar+utils.h

@@ -6,4 +6,6 @@
 
 - (void)rnn_setBackgroundColorTransparent;
 
+- (void)rnn_setBackIndicatorImage:(UIImage *)image;
+
 @end

lib/ios/UINavigationBar+utils.m

@@ -57,6 +57,16 @@ const NSInteger TOP_BAR_TRANSPARENT_TAG = 78264803;
     }
 }
 
+- (void)rnn_setBackIndicatorImage:(UIImage *)image {
+    if (@available(iOS 13.0, *)) {
+        [[self getNavigaitonBarStandardAppearance] setBackIndicatorImage:image transitionMaskImage:image];
+        [[self getNavigaitonBarCompactAppearance] setBackIndicatorImage:image transitionMaskImage:image];
+        [[self getNavigaitonBarScrollEdgeAppearance] setBackIndicatorImage:image transitionMaskImage:image];
+    } else {
+        [self setBackIndicatorImage:image];
+        [self setBackIndicatorTransitionMaskImage:image];
+    }
+}
 
 - (UINavigationBarAppearance*)getNavigaitonBarStandardAppearance  API_AVAILABLE(ios(13.0)) {
     if (!self.standardAppearance) {

lib/ios/UINavigationController+RNNOptions.h

@@ -30,4 +30,6 @@
 
 - (void)setBackButtonColor:(UIColor *)color;
 
+- (void)setBackButtonIcon:(UIImage *)icon withColor:(UIColor *)color title:(NSString *)title showTitle:(BOOL)showTitle;
+
 @end

lib/ios/UINavigationController+RNNOptions.m

@@ -1,5 +1,7 @@
 #import "UINavigationController+RNNOptions.h"
 #import "RNNFontAttributesCreator.h"
+#import "UIImage+tint.h"
+#import "UINavigationBar+utils.h"
 
 const NSInteger BLUR_TOPBAR_TAG = 78264802;
 
@@ -103,4 +105,24 @@ const NSInteger BLUR_TOPBAR_TAG = 78264802;
 	self.navigationBar.clipsToBounds = clipsToBounds;
 }
 
+- (void)setBackButtonIcon:(UIImage *)icon withColor:(UIColor *)color title:(NSString *)title showTitle:(BOOL)showTitle {
+    UIBarButtonItem *backItem = [[UIBarButtonItem alloc] init];
+    if (icon) {
+        icon = color
+        ? [[icon withTintColor:color] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]
+        : icon;
+    }
+    
+    [self.navigationBar rnn_setBackIndicatorImage:icon];
+
+    UIViewController *lastViewControllerInStack = self.viewControllers.count > 1 ? self.viewControllers[self.viewControllers.count - 2] : self.topViewController;
+
+    if (showTitle) {
+        backItem.title = title ? title : lastViewControllerInStack.navigationItem.title;
+    }
+    backItem.tintColor = color;
+
+    lastViewControllerInStack.navigationItem.backBarButtonItem = backItem;
+}
+
 @end

lib/ios/UIViewController+RNNOptions.h

@@ -34,8 +34,6 @@
 
 - (void)setInterceptTouchOutside:(BOOL)interceptTouchOutside;
 
-- (void)setBackButtonIcon:(UIImage *)icon withColor:(UIColor *)color title:(NSString *)title;
-
 - (void)applyBackButton:(RNNBackButtonOptions *)backButton;
 
 - (BOOL)isModal;

lib/ios/UIViewController+RNNOptions.m

@@ -1,6 +1,7 @@
 #import "UIViewController+RNNOptions.h"
 #import <React/RCTRootView.h>
 #import "UIImage+tint.h"
+#import "UINavigationBar+utils.h"
 #import "RNNBottomTabOptions.h"
 #import "RNNNavigationOptions.h"
 #import "RNNBackButtonOptions.h"
@@ -160,25 +161,6 @@ const NSInteger BLUR_STATUS_TAG = 78264801;
 	}
 }
 
-- (void)setBackButtonIcon:(UIImage *)icon withColor:(UIColor *)color title:(NSString *)title {
-	UIBarButtonItem *backItem = [[UIBarButtonItem alloc] init];
-	if (icon) {
-		backItem.image = color
-		? [[icon withTintColor:color] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]
-		: icon;
-
-		[self.navigationController.navigationBar setBackIndicatorImage:[UIImage new]];
-		[self.navigationController.navigationBar setBackIndicatorTransitionMaskImage:[UIImage new]];
-	}
-
-	UIViewController *lastViewControllerInStack = self.navigationController.viewControllers.count > 1 ? self.navigationController.viewControllers[self.navigationController.viewControllers.count - 2] : self.navigationController.topViewController;
-
-	backItem.title = title ? title : lastViewControllerInStack.navigationItem.title;
-	backItem.tintColor = color;
-
-	lastViewControllerInStack.navigationItem.backBarButtonItem = backItem;
-}
-
 - (void)applyBackButton:(RNNBackButtonOptions *)backButton {
 	UIBarButtonItem *backItem = [UIBarButtonItem new];
 	if (backButton.icon.hasValue) {

playground/ios/NavigationTests/RNNComponentPresenterTest.m

@@ -173,37 +173,6 @@
 	XCTAssertEqual(self.uut.boundComponentId, @"componentId");
 }
 
-- (void)testApplyOptionsOnWillMoveToParent_shouldSetBackButtonOnBoundViewController_withTitle {
-	Text* title = [[Text alloc] initWithValue:@"Title"];
-	self.options.topBar.backButton.title = title;
-	[[(id) self.boundViewController expect] setBackButtonIcon:nil withColor:nil title:title.get];
-	[self.uut applyOptionsOnWillMoveToParentViewController:self.options];
-	[(id)self.boundViewController verify];
-}
-
-- (void)testApplyOptionsOnWillMoveToParent_shouldSetBackButtonOnBoundViewController_withHideTitle {
-	Text* title = [[Text alloc] initWithValue:@"Title"];
-	self.options.topBar.backButton.title = title;
-	self.options.topBar.backButton.showTitle = [[Bool alloc] initWithValue:@(0)];
-	[[(id) self.boundViewController expect] setBackButtonIcon:nil withColor:nil title:@""];
-	[self.uut applyOptionsOnWillMoveToParentViewController:self.options];
-	[(id)self.boundViewController verify];
-}
-
-- (void)testApplyOptionsOnWillMoveToParent_shouldSetBackButtonOnBoundViewController_withIcon {
-	Image* image = [[Image alloc] initWithValue:[UIImage new]];
-	self.options.topBar.backButton.icon = image;
-	[[(id) self.boundViewController expect] setBackButtonIcon:image.get withColor:nil title:nil];
-	[self.uut applyOptionsOnWillMoveToParentViewController:self.options];
-	[(id)self.boundViewController verify];
-}
-
-- (void)testApplyOptionsOnWillMoveToParent_shouldSetBackButtonOnBoundViewController_withDefaultValues {
-	[[(id) self.boundViewController expect] setBackButtonIcon:nil withColor:nil title:nil];
-	[self.uut applyOptionsOnWillMoveToParentViewController:self.options];
-	[(id)self.boundViewController verify];
-}
-
 - (void)testRemoveTitleComponentIfNeeded_componentIsRemovedIfTitleTextIsDefined {
 	id mockTitle = [OCMockObject niceMockForClass:[RNNReactView class]];
     OCMStub([self.componentRegistry createComponentIfNotExists:[OCMArg any] parentComponentId:[OCMArg any] reactViewReadyBlock:nil]).andReturn(mockTitle);

playground/ios/NavigationTests/RNNStackPresenterTest.m

@@ -57,4 +57,35 @@
 	XCTAssertFalse([[self.uut.boundViewController navigationBar] prefersLargeTitles]);
 }
 
+- (void)testApplyOptions_shouldSetBackButtonOnBoundViewController_withTitle {
+	Text* title = [[Text alloc] initWithValue:@"Title"];
+	self.options.topBar.backButton.title = title;
+	[[_boundViewController expect] setBackButtonIcon:nil withColor:nil title:title.get showTitle:YES];
+	[self.uut applyOptions:self.options];
+	[_boundViewController verify];
+}
+
+- (void)testApplyOptions_shouldSetBackButtonOnBoundViewController_withHideTitle {
+	Text* title = [[Text alloc] initWithValue:@"Title"];
+	self.options.topBar.backButton.title = title;
+	self.options.topBar.backButton.showTitle = [[Bool alloc] initWithValue:@(0)];
+	[[(id) self.boundViewController expect] setBackButtonIcon:nil withColor:nil title:title.get showTitle:self.options.topBar.backButton.showTitle.get];
+	[self.uut applyOptions:self.options];
+	[(id)self.boundViewController verify];
+}
+
+- (void)testApplyOptions_shouldSetBackButtonOnBoundViewController_withIcon {
+	Image* image = [[Image alloc] initWithValue:[UIImage new]];
+	self.options.topBar.backButton.icon = image;
+	[[(id) self.boundViewController expect] setBackButtonIcon:image.get withColor:nil title:nil showTitle:YES];
+	[self.uut applyOptions:self.options];
+	[(id)self.boundViewController verify];
+}
+
+- (void)testApplyOptions_shouldSetBackButtonOnBoundViewController_withDefaultValues {
+	[[(id) self.boundViewController expect] setBackButtonIcon:nil withColor:nil title:nil showTitle:YES];
+	[self.uut applyOptions:self.options];
+	[(id)self.boundViewController verify];
+}
+
 @end

playground/ios/NavigationTests/UINavigationController+RNNOptionsTest.m

@@ -11,4 +11,42 @@
     [super setUp];
 }
 
+- (void)testSetBackButtonIcon_withColor_shouldSetColor {
+	UIViewController* vc = [UIViewController new];
+	UINavigationController* uut = [[UINavigationController alloc] initWithRootViewController:vc];
+	UIColor* color = [UIColor blackColor];
+
+	[uut setBackButtonIcon:nil withColor:color title:nil showTitle:nil];
+	XCTAssertEqual(color, vc.navigationItem.backBarButtonItem.tintColor);
+}
+
+- (void)testSetBackButtonIcon_withColor_shouldSetTitle {
+	UIViewController* vc = [UIViewController new];
+	UINavigationController* uut = [[UINavigationController alloc] initWithRootViewController:vc];
+    NSString* title = @"Title";
+
+    [uut setBackButtonIcon:nil withColor:nil title:title showTitle:YES];
+	XCTAssertEqual(title, vc.navigationItem.backBarButtonItem.title);
+}
+
+//- (void)testSetBackButtonIcon_withColor_shouldSetIcon {
+//	UIViewController* vc = [UIViewController new];
+//	UINavigationController* uut = [[UINavigationController alloc] initWithRootViewController:vc];
+//    UIImage* icon = [UIImage new];
+//
+//    [uut setBackButtonIcon:icon withColor:nil title:nil showTitle:nil];
+//	XCTAssertEqual(icon, vc.navigationItem.backBarButtonItem.image);
+//}
+
+- (void)testSetBackButtonIcon_shouldSetTitleOnPreviousViewControllerIfExists {
+	UIViewController* viewController1 = [UIViewController new];
+	UIViewController* viewController2 = [UIViewController new];
+	UINavigationController* uut = [[UINavigationController alloc] init];
+	[uut setViewControllers:@[viewController1, viewController2]];
+	NSString* title = @"Title";
+
+	[uut setBackButtonIcon:nil withColor:nil title:title showTitle:YES];
+	XCTAssertEqual(title, viewController1.navigationItem.backBarButtonItem.title);
+}
+
 @end

playground/ios/NavigationTests/UIViewController+LayoutProtocolTest.m

@@ -42,44 +42,6 @@
 	XCTAssertEqual(uut.viewControllers[1], child2);
 }
 
-- (void)testSetBackButtonIcon_withColor_shouldSetColor {
-	UIViewController* uut = [UIViewController new];
-	[[UINavigationController alloc] initWithRootViewController:uut];
-	UIColor* color = [UIColor blackColor];
-
-    [uut setBackButtonIcon:nil withColor:color title:nil];
-	XCTAssertEqual(color, uut.navigationItem.backBarButtonItem.tintColor);
-}
-
-- (void)testSetBackButtonIcon_withColor_shouldSetTitle {
-	UIViewController* uut = [UIViewController new];
-    UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:uut];
-    NSString* title = @"Title";
-
-    [uut setBackButtonIcon:nil withColor:nil title:title];
-	XCTAssertEqual(title, uut.navigationItem.backBarButtonItem.title);
-}
-
-- (void)testSetBackButtonIcon_withColor_shouldSetIcon {
-	UIViewController* uut = [UIViewController new];
-    UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:uut];
-    UIImage* icon = [UIImage new];
-
-    [uut setBackButtonIcon:icon withColor:nil title:nil];
-	XCTAssertEqual(icon, uut.navigationItem.backBarButtonItem.image);
-}
-
-- (void)testSetBackButtonIcon_shouldSetTitleOnPreviousViewControllerIfExists {
-	UIViewController* uut = [UIViewController new];
-	UIViewController* viewController2 = [UIViewController new];
-	UINavigationController* nav = [[UINavigationController alloc] init];
-	[nav setViewControllers:@[uut, viewController2]];
-	NSString* title = @"Title";
-
-    [uut setBackButtonIcon:nil withColor:nil title:title];
-	XCTAssertEqual(title, uut.navigationItem.backBarButtonItem.title);
-}
-
 - (void)testResolveOptions {
 	RNNComponentPresenter* presenter = [[RNNComponentPresenter alloc] init];