Objective-c
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window.backgroundColor = [UIColor orangeColor];
}
Swift
func application(application: UIApplication!, didFinishLaunchingWithOptions launchOptions: NSDictionary!) -> Bool {
self.window!.backgroundColor = UIColor.orangeColor()
}
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