AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
UIViewController *vc = [[UIViewController alloc] init];
appDelegate.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
[appDelegate.window.rootViewController presentViewController:vc animated:YES completion:^{
vc.view.backgroundColor=[UIColor colorWithRed:0 green:0 blue:0 alpha:0.8];
appDelegate.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;
}];
- iOS 8：利用最新的
modalpresentationstyle:UIModalPresentationOverCurrentContext
TestController *vc = [[TestController alloc] init];
vc.modalPresentationStyle = UIModalPresentationOverCurrentContext;
[self presentViewController:vc animated:NO completion:^{
vc.view.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.8];
}];
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