fix(ios): revert "feat: remove unneeded view controller (#74)" (#78)

This reverts commit fb78459.

Author: vonovak

ios/RNSimpleToast.mm

@@ -1,9 +1,9 @@
 #import "RNSimpleToast.h"
 
 #import "UIView+Toast.h"
+#import "RNToastViewController.h"
 #import <React/RCTConvert.h>
 #import "RNToastView.h"
-#import "RNToastWindow.h"
 
 static double defaultPositionId = 2.0;
 
@@ -106,17 +106,18 @@ - (void)_show:(NSString *)msg
 
     NSString *positionString = RNToastPositionMap[@(position)] ?: CSToastPositionBottom;
     dispatch_async(dispatch_get_main_queue(), ^{
-        UIWindow *window = [RNToastWindow new];
+        RNToastViewController *controller = [RNToastViewController new];
+        [controller show];
         BOOL kbdAvoidEnabled = [CSToastPositionBottom isEqualToString:positionString];
-        UIView *view = [[RNToastView alloc] initWithFrame:window.bounds kbdHeight:self->_kbdHeight kbdAvoidEnabled:kbdAvoidEnabled];
-        [window addSubview:view];
+        UIView *view = [[RNToastView alloc] initWithFrame:controller.toastWindow.bounds kbdHeight:self->_kbdHeight kbdAvoidEnabled:kbdAvoidEnabled];
+        [controller.toastWindow addSubview:view];
         UIView __weak *weakView = view;
 
         UIView *toast = [view toastViewForMessage:msg title:nil image:nil style:style];
 
         void (^completion)(BOOL) = ^(BOOL didTap) {
             [weakView removeFromSuperview];
-            [window setHidden:YES];
+            [controller hide];
         };
         // CSToastManager state is shared among toasts, and is used when toast is shown
         // so modifications to it should happen in the dispatch_get_main_queue block

ios/RNToastViewController.h

@@ -0,0 +1,10 @@
+#import <UIKit/UIKit.h>
+
+@interface RNToastViewController : NSObject
+
+@property(nonatomic, strong) UIWindow *toastWindow;
+
+- (void)show;
+- (void)hide;
+
+@end

ios/RNToastViewController.m

@@ -0,0 +1,54 @@
+
+#import "RNToastViewController.h"
+#import <React/RCTUtils.h>
+#import "RNToastWindow.h"
+
+@implementation RNToastViewController
+
+- (UIWindow *)toastWindow
+{
+    if (_toastWindow == nil) {
+        _toastWindow = [self getUIWindowFromScene];
+        
+        if (_toastWindow == nil) {
+            UIWindow *keyWindow = RCTSharedApplication().keyWindow;
+            if (keyWindow) {
+                _toastWindow = [[RNToastWindow alloc] initWithFrame:keyWindow.bounds];
+            } else {
+                // keyWindow is nil, so we cannot create and initialize _toastWindow
+                NSLog(@"Unable to create alert window: keyWindow is nil");
+            }
+        }
+    }
+    
+    return _toastWindow;
+}
+
+- (void)show {
+    [self.toastWindow setHidden:NO];
+}
+
+- (void)hide {
+    [_toastWindow setHidden:YES];
+
+    if (@available(iOS 13, *)) {
+        _toastWindow.windowScene = nil;
+    }
+
+    _toastWindow = nil;
+}
+
+- (UIWindow *)getUIWindowFromScene
+{
+    if (@available(iOS 13.0, *)) {
+        for (UIScene *scene in RCTSharedApplication().connectedScenes) {
+            if (scene.activationState == UISceneActivationStateForegroundActive &&
+                [scene isKindOfClass:[UIWindowScene class]]) {
+                return [[RNToastWindow alloc] initWithWindowScene:(UIWindowScene *)scene];
+            }
+        }
+    }
+    return nil;
+}
+
+@end

ios/RNToastWindow.m

@@ -1,29 +1,16 @@
 #import "RNToastWindow.h"
-#import <React/RCTUtils.h>
 
 @implementation RNToastWindow
 
-- (instancetype)init
-{
-    if (@available(iOS 13.0, *)) {
-        for (UIScene *scene in RCTSharedApplication().connectedScenes) {
-            if (scene.activationState == UISceneActivationStateForegroundActive &&
-                [scene isKindOfClass:[UIWindowScene class]]) {
-                self = [super initWithWindowScene:(UIWindowScene *)scene];
-            }
-        }
-    }
-    if (!self) {
-        UIWindow *keyWindow = RCTSharedApplication().keyWindow;
-        if (keyWindow) {
-            self = [super initWithFrame:keyWindow.bounds];
-        } else {
-            // keyWindow is nil, so we cannot create and initialize _toastWindow
-            NSLog(@"Unable to create alert window: keyWindow is nil");
-        }
+- (instancetype)initWithFrame:(CGRect)frame {
+    if (self = [super initWithFrame:frame]) {
+        self.windowLevel = UIWindowLevelAlert + 1;
     }
-    if (self) {
-        [self setHidden:NO];
+    return self;
+}
+
+- (instancetype)initWithWindowScene:(UIWindowScene *)windowScene {
+    if (self = [super initWithWindowScene:windowScene]) {
         self.windowLevel = UIWindowLevelAlert + 1;
     }
     return self;
@@ -35,11 +22,4 @@ - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
   else return hitView;
 }
 
-- (void)dealloc
-{
-    if (@available(iOS 13, *)) {
-        self.windowScene = nil;
-    }
-}
-
 @end