[google_sign_in] Fix deprecated API usage issue by upgrading CocoaPod to 5.0 (flutter#2127)

* Fix Deprecated API Usage issue
* Update to 5.0 compatibility

Author: collinjackson

packages/google_sign_in/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 4.0.11
+
+* Update iOS CocoaPod dependency to 5.0 to fix deprecated API usage issue.
+
 ## 4.0.10
 
 * Remove AndroidX warning.

packages/google_sign_in/ios/Classes/GoogleSignInPlugin.m

@@ -29,7 +29,7 @@
                              details:error.localizedDescription];
 }
 
-@interface FLTGoogleSignInPlugin () <GIDSignInDelegate, GIDSignInUIDelegate>
+@interface FLTGoogleSignInPlugin () <GIDSignInDelegate>
 @end
 
 @implementation FLTGoogleSignInPlugin {
@@ -49,7 +49,6 @@ - (instancetype)init {
   self = [super init];
   if (self) {
     [GIDSignIn sharedInstance].delegate = self;
-    [GIDSignIn sharedInstance].uiDelegate = self;
 
     // On the iOS simulator, we get "Broken pipe" errors after sign-in for some
     // unknown reason. We can avoid crashing the app by ignoring them.
@@ -84,11 +83,13 @@ - (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result
     }
   } else if ([call.method isEqualToString:@"signInSilently"]) {
     if ([self setAccountRequest:result]) {
-      [[GIDSignIn sharedInstance] signInSilently];
+      [[GIDSignIn sharedInstance] restorePreviousSignIn];
     }
   } else if ([call.method isEqualToString:@"isSignedIn"]) {
-    result(@([[GIDSignIn sharedInstance] hasAuthInKeychain]));
+    result(@([[GIDSignIn sharedInstance] hasPreviousSignIn]));
   } else if ([call.method isEqualToString:@"signIn"]) {
+    [GIDSignIn sharedInstance].presentingViewController = [self topViewController];
+
     if ([self setAccountRequest:result]) {
       @try {
         [[GIDSignIn sharedInstance] signIn];
@@ -135,10 +136,7 @@ - (BOOL)setAccountRequest:(FlutterResult)request {
 
 - (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary *)options {
   NSString *sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey];
-  id annotation = options[UIApplicationOpenURLOptionsAnnotationKey];
-  return [[GIDSignIn sharedInstance] handleURL:url
-                             sourceApplication:sourceApplication
-                                    annotation:annotation];
+  return [[GIDSignIn sharedInstance] handleURL:url];
 }
 
 #pragma mark - <GIDSignInUIDelegate> protocol
@@ -192,4 +190,36 @@ - (void)respondWithAccount:(id)account error:(NSError *)error {
   result(error != nil ? getFlutterError(error) : account);
 }
 
+- (UIViewController *)topViewController {
+  return [self topViewControllerFromViewController:[UIApplication sharedApplication]
+                                                       .keyWindow.rootViewController];
+}
+
+/**
+ * This method recursively iterate through the view hierarchy
+ * to return the top most view controller.
+ *
+ * It supports the following scenarios:
+ *
+ * - The view controller is presenting another view.
+ * - The view controller is a UINavigationController.
+ * - The view controller is a UITabBarController.
+ *
+ * @return The top most view controller.
+ */
+- (UIViewController *)topViewControllerFromViewController:(UIViewController *)viewController {
+  if ([viewController isKindOfClass:[UINavigationController class]]) {
+    UINavigationController *navigationController = (UINavigationController *)viewController;
+    return [self
+        topViewControllerFromViewController:[navigationController.viewControllers lastObject]];
+  }
+  if ([viewController isKindOfClass:[UITabBarController class]]) {
+    UITabBarController *tabController = (UITabBarController *)viewController;
+    return [self topViewControllerFromViewController:tabController.selectedViewController];
+  }
+  if (viewController.presentedViewController) {
+    return [self topViewControllerFromViewController:viewController.presentedViewController];
+  }
+  return viewController;
+}
 @end

packages/google_sign_in/ios/google_sign_in.podspec

@@ -15,7 +15,7 @@ Enables Google Sign-In in Flutter apps.
   s.source_files = 'Classes/**/*'
   s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'
-  s.dependency 'GoogleSignIn', '~> 4.0'
+  s.dependency 'GoogleSignIn', '~> 5.0'
   s.static_framework = true
 
   s.platform = :ios, '8.0'

packages/google_sign_in/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for Google Sign-In, a secure authentication system
   for signing in with a Google account on Android and iOS.
 author: Flutter Team <[email protected]>
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_sign_in
-version: 4.0.10
+version: 4.0.11
 
 flutter:
   plugin: