Get Instance of RootView in the AppDelegate

How do I get an instance of RootViewController in order to use code like:

rootViewController.progressView.progress =开发者_C百科 0.7

in the applicationDidFinishLauching method in the App Delegate?

This works for me:

#import "CBAppDelegate.h"
#import "OPStringLocalization.h"

@implementation CBAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    UIViewController* rootController = [self.window rootViewController];
    [rootController localizeStrings];
    return YES;
}

@end

You can create an IBOutlet of a float variable in your rootViewController.Then you can init that variable in applicationDidFinishLaunching by the same code that you showed like this

rootViewController.progress = 0.7;

and in viewDidLoad method of rootViewController you can then show the progress of your progress View to 70 % or what ever you want.

Apparently you cannot do

rootViewController.progressView.progress = 0.7;

coz your progressView object is in archived state or frozen state or something like that.
so I think you can use this as a solution to your problem.

hope this helps

you usually have an instance available as an instance variable of the window object:

self.window.rootViewController