Presenting semi-transparent viewcontroller that works both in iOS7 and iOS8

Question

I had the following code that worked perfectly in iOS7.

[UIView animateWithDuration:0.5 animations:^(void) {
    self.view.alpha = 0.5;
    [self.navigation         


        

Answer 1

Based on @Tiguero's answer, I created a small category class to solve the problem.

@implementation UIViewController (Extensions)

- (void) presentTransparentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion
{
    if(SYSTEM_VERSION_LESS_THAN(@"8.0")) {
        self.parentViewController.navigationController.modalPresentationStyle = UIModalPresentationCurrentContext;
    }else{
        viewControllerToPresent.modalPresentationStyle = UIModalPresentationOverCurrentContext;
    }

    [self presentViewController:viewControllerToPresent animated:YES completion:completion];
}

@end

The iOS7 version required me to hardcode the controller that does the presenting.