Display a view or splash screen before applicationDidEnterBackground (to avoid active view screenshot)

I think the problem is that you are testing in simulator. On device, it should work fine.

I tested this and it worked. Add an imageview with your splash image when app enters in background -

- (void)applicationDidEnterBackground:(UIApplication *)application{        UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.window.bounds];        imageView.tag = 101;    // Give some decent tagvalue or keep a reference of imageView in self    //    imageView.backgroundColor = [UIColor redColor];        [imageView setImage:[UIImage imageNamed:@"Default.png"]];   // assuming Default.png is your splash image's name        [UIApplication.sharedApplication.keyWindow.subviews.lastObject addSubview:imageView];}

And when app comes back in foreground -

- (void)applicationWillEnterForeground:(UIApplication *)application{    UIImageView *imageView = (UIImageView *)[UIApplication.sharedApplication.keyWindow.subviews.lastObject viewWithTag:101];   // search by the same tag value    [imageView removeFromSuperview];}

NOTE - On simulator (iOS 7.0), the added subview is not show when you check by pressing home button twice (Cmd + H), but on device it works as expected (like paypal, BofA apps)

EDIT: (Additional info)

In addition to obscuring/replacing sensitive information by adding subview / blur as explained above, iOS 7 provides you ability to ignore the screen snapshot via ignoreSnapshotOnNextApplicationLaunch of UIApplication inside applicationWillResignActive or applicationDidEnterBackground.

UIApplication.h

// Indicate the application should not use the snapshot on next launch, even if there is a valid state restoration archive.// This should only be called from methods invoked from State Preservation, else it is ignored.- (void)ignoreSnapshotOnNextApplicationLaunch NS_AVAILABLE_IOS(7_0);

Also, allowScreenShot flag can be explored in Restrictions Payload.

Swift 3.0 Answer for those who are to lazy to translate.

func applicationDidEnterBackground(_ application: UIApplication) {    let imageView = UIImageView(frame: self.window!.bounds)    imageView.tag = 101    imageView.image = ...    UIApplication.shared.keyWindow?.subviews.last?.addSubview(imageView) }func applicationWillEnterForeground(_ application: UIApplication) {    if let imageView : UIImageView = UIApplication.shared.keyWindow?.subviews.last?.viewWithTag(101) as? UIImageView {        imageView.removeFromSuperview()    }}

Had the same issue, essentially I was using applicationDidEnterBackground to show a UIWindow on top of the content, but in iOS8 it didn't work as it did in iOS7.

The solution I found was to create the UIWindow in applicationWillResignActive but make it hidden securityWindow.hidden = YES; and then in applicationDidEnterBackground all I would do would be to change securityWindow.hidden = NO.

This seems to work exactly as iOS7 obscuring the content when multi tasking without affecting the view when using NotificationCenter or ControlPanel.