Merge pull request #534 from GEDYSIntraWare/fix-show-ios13

Fix inappbrowser not opening on iOS 13 by using reusable window. Resolves #492

src/ios/CDVWKInAppBrowser.h

@@ -27,6 +27,8 @@
 @class CDVWKInAppBrowserViewController;
 
 @interface CDVWKInAppBrowser : CDVPlugin {
+    UIWindow * tmpWindow;
+
     @private
     NSString* _beforeload;
     BOOL _waitForBeforeload;

src/ios/CDVWKInAppBrowser.m

@@ -80,6 +80,7 @@ static CDVWKInAppBrowser* instance = nil;
         NSLog(@"IAB.close() called but it was already closed.");
         return;
     }
+    
     // Things are cleaned up in browserExit.
     [self.inAppBrowserViewController close];
 }
@@ -275,7 +276,9 @@ static CDVWKInAppBrowser* instance = nil;
     _waitForBeforeload = ![_beforeload isEqualToString:@""];
     
     [self.inAppBrowserViewController navigateTo:url];
+    if (!browserOptions.hidden) {
         [self show:nil withNoAnimate:browserOptions.hidden];
+    }
 }
 
 - (void)show:(CDVInvokedUrlCommand*)command{
@@ -314,19 +317,21 @@ static CDVWKInAppBrowser* instance = nil;
     dispatch_async(dispatch_get_main_queue(), ^{
         if (weakSelf.inAppBrowserViewController != nil) {
             float osVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
+            __strong __typeof(weakSelf) strongSelf = weakSelf;
+            if (!strongSelf->tmpWindow) {
                 CGRect frame = [[UIScreen mainScreen] bounds];
                 if(initHidden && osVersion < 11){
                    frame.origin.x = -10000;
                 }
-            
+                strongSelf->tmpWindow = [[UIWindow alloc] initWithFrame:frame];
-            UIWindow *tmpWindow = [[UIWindow alloc] initWithFrame:frame];
+            }
             UIViewController *tmpController = [[UIViewController alloc] init];
 
-            [tmpWindow setRootViewController:tmpController];
+            [strongSelf->tmpWindow setRootViewController:tmpController];
-            [tmpWindow setWindowLevel:UIWindowLevelNormal];
+            [strongSelf->tmpWindow setWindowLevel:UIWindowLevelNormal];
 
             if(!initHidden || osVersion < 11){
-            [tmpWindow makeKeyAndVisible];
+                [self->tmpWindow makeKeyAndVisible];
             }
             [tmpController presentViewController:nav animated:!noAnimate completion:nil];
         }
@@ -335,6 +340,10 @@ static CDVWKInAppBrowser* instance = nil;
 
 - (void)hide:(CDVInvokedUrlCommand*)command
 {
+    // Set tmpWindow to hidden to make main webview responsive to touch again
+    // https://stackoverflow.com/questions/4544489/how-to-remove-a-uiwindow
+    self->tmpWindow.hidden = YES;
+
     if (self.inAppBrowserViewController == nil) {
         NSLog(@"Tried to hide IAB after it was closed.");
         return;
@@ -691,6 +700,10 @@ static CDVWKInAppBrowser* instance = nil;
     self.inAppBrowserViewController.navigationDelegate = nil;
     self.inAppBrowserViewController = nil;
 
+    // Set tmpWindow to hidden to make main webview responsive to touch again
+    // Based on https://stackoverflow.com/questions/4544489/how-to-remove-a-uiwindow
+    self->tmpWindow.hidden = YES;
+    
     if (IsAtLeastiOSVersion(@"7.0")) {
         if (_previousStatusBarStyle != -1) {
             [[UIApplication sharedApplication] setStatusBarStyle:_previousStatusBarStyle];