gistfile1.matlab

#import "MPAppDelegate.h"

@interface MPAppDelegate()

@property (strong, nonatomic) UIView *wildView;
@property (strong, nonatomic) UIViewController *viewController;

@end


@implementation MPAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.wildView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.wildView.backgroundColor = [UIColor whiteColor];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    self.viewController = [[UIViewController alloc] init];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    [NSTimer scheduledTimerWithTimeInterval:.1 target:self selector:@selector(toggleWildView) userInfo:nil repeats:YES];
}

- (void)toggleWildView
{
    self.wildView.superview ? [self.wildView removeFromSuperview] : [self.window addSubview:self.wildView];
}


@end