Transparent modalViewController

Question

Possible Duplicate:
Transparent Modal View on Navigation Controller

I want to make my viewController with transparent backgroundColor but i don't have any luck..

I've tried to set/use...

self.view.backgroundColor = [UIColor clearColor]; - still I have white colored background.
self.view.alpha = .0f; - all my thing in my VC are missing but i still have white background
self.view.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:.7f] and still white background below my transparent view.

EDIT1:

Tested on:

iPad3, iOS 6.0
iPad 6.0 Simulator

Are you trying to set it transparent so that the view you present it over is shown? — brynbodayle, Oct 11 '12 at 16:06
Yes. The ViewController below must be visible, partially of course. — h4cky, Oct 11 '12 at 16:08

h4cky · Accepted Answer · 2012-10-12T07:18:31.400

After little more researching I've found this approach:

Original code:

MyViewController *popUpViewController = [[MyViewController alloc] init];
[self presentModalViewController:popUpViewController animated:YES];
[popUpViewController release];

Modified code:

TTPopUpViewController *popUpViewController = [[TTPopUpViewController alloc] init];
popUpViewController.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:popUpViewController animated:YES];
[popUpViewController release];

So as you can see i've using modalPresentationStyle property on my ViewController which I wan't to present, right before call presentModalViewController:animated:

NOTE: My ViewController view have size of {680, 700}

It present my ViewController view with size of {540, 620} and because my original size bigger I have parts my borders and shadows hidden but with little modification of my view look and feel it will be okay.

However this approach seems to give me what I want.

========

For more information please refer to following Apple documentation:

UIViewController Class Reference

score 1 · Answer 2 · edited May 23 '17 at 12:05

1

Generally not possible using presentModalViewController. Here's a similar question with a workaround:

Transparent Modal View on Navigation Controller

edited May 23 '17 at 12:05

Community

1
1

answered Oct 11 '12 at 16:11

TomSwift

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score 1 · Answer 3 · answered Oct 11 '12 at 16:14

The problem with what you are doing is that the ViewController's view below the transparent one is removed from the screen after presenting the new ViewController. Manually adding a new view on top of the current ViewController and setting that to transparent will work though.

score 0 · Answer 4 · answered Oct 11 '12 at 16:21

You can't use presentViewController to achieve this, however there's a way - which is not very elegant.

.h file
@propert(strong,nonatomic) MyCustomViewController *myCustomVC;

.m file
-(void) presentTransparentViewController
{
if(self.myCustomVC==nil) {
    _myCustomVC = [[MyCustomViewController alloc] init];
    }

self.myCustomVC.view.backgroundColor = [UIColor clearColor];
UIView *view = self.myCustomVC.view;
view.opaque = NO;

view.frame = self.view.frame; //assuming the views are the same size
[self.view addSubview:view];
}

You can also add the view below the main screens frame and present it with an animation.

score 0 · Answer 5 · edited Jun 07 '13 at 06:23

I just found a workaround for that. Just create a 1X1 of UIViewController and add it to your parent view controller. And show the modal view controller in that UIViewController.

on viewDidLoad;

self.dummyViewController = [[UIViewController alloc] init];
 [self.dummyViewController.view setFrame:CGRectMake(0, 0, 1, 1)];
 [self.view addSubView:self.dummyViewController.view];

when you need to open a transparentViewController;

[self.dummyViewController presentModalViewController:yourTransparentModalViewController animated:true];

Transparent modalViewController

5 Answers5