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~ The app delegate must implement the window property if it wants to use a main storyboard file. ~

connie 2020.03.02 Post on (2020.03.02) | ios, Uncategorized | 個別ページ | No Comments

AppDelegate.h add back this line
@property (strong, nonatomic) UIWindow * window;

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow * window;

@end