Modal View Controller loading with black background

ios, modalviewcontroller, objective-c, presentmodalviewcontroller, uiviewcontroller

Solution

Modal views didn't support transparency (for iPhone). But you can add 'UIView' to parent view and animate it using `CoreAnimation`

EDIT

-(void)checkConnection: (Reachability*) curReach {
    NetworkStatus netStatus = [curReach currentReachabilityStatus];
    if (netStatus == NotReachable) {
        NSLog(@"internet reach - not reachable");
        UIViewController *modalViewController = [[MESConnectionModalViewController alloc] init];
        //Set y position to animate it
        CGRect frame = modalViewController.view.frame;
        frame.origin.y = [[UIApplication sharedApplication] keyWindow].frame.size.height;
        modalViewController.view.frame = frame;
        modalViewController.view.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.2f];
        [self.view addSubview:modalViewController.view];
        //Animate appearing
        frame.origin.y = 0;
        [UIView animateWithDuration:0.2 animations:^{
            modalViewController.view.frame = frame;
        }];
    }
}

Also you can store `modalViewController` as property to acces to it in future.

Problem

I have seen a few of these issues by searching but mostly relating to storyboards. I am simply pragmatically creating a modal view controller. It is actually for the use with reachability, once the connection is seen as NotReachable I present a modal view controller like this: ``` -(void)checkConnection: (Reachability*) curReach { NetworkStatus netStatus = [curReach currentReachabilityStatus]; if (netStatus == NotReachable) { NSLog(@"inernet reach - not reachable"); UIViewController *modalViewController = [[MESConnectionModalViewController alloc] init]; modalViewController.view.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.2f]; modalViewController.view.opaque= YES; [self.window.rootViewController presentModalViewController:modalViewController animated:YES]; } } ``` Within the view controller `MESConnectionModalViewController` there is currently no code, just the standard. When the modal view is being transitioned onto the current view the background looks correct (this is for a brief second or two). Once the modal is completely over screen it is full black, instead of being partly black. I am looking to basically slightly cover the current content. The above code is seutp in the app delegate and called whenever Reachability updates so I am trying to show a modal view controller whilst the internet connection is being resolved.

Original source