<Error>: CGAffineTransformInvert: singular matrix.

[zhugexiaobo]

I found this error in iOS 8 when sliding the 3rd image to 4th, <Error>: CGAffineTransformInvert: singular matrix.. Then it can't move to next/prev image.

At 5s and above, this error shows but image can be moved to next.

[nicorsm]

Also found this problem with local images on iPhone 5s/iOS 8.0.1

[surendraraju]

In the class MWZoomingScrollView.m , method showLoadingIndicator set

self.zoomScale = 0.1;
self.minimumZoomScale = 0.1;
self.maximumZoomScale = 0.1;

This will get rid of that error .

[mythodeia]

@surendraraju this works for me as well

[faacsousa]

This works for me as well. Will that be updated in master?

[luutruong]

The currently version did not fix it :)

[aravindkumar]

Same issue in ios8.4

[aravindkumar]

Same issue is occurred in ios 8.4

[xilin]

It still shows the error now.

[unbirdlikebird]

also ios9

[ignus001]

I found this error while setting navigation controller's viewcontroller stack. navigationController?.setViewControllers(stack, animated: true) where stack is an array of UIViewControllers and MWPhotoBrowser is on top (last on stack)

Stack:

[AppName.MenuSelectionViewController: 0x7be154b0,AppName.AboutRootViewController: 0x7be0cb80,MWPhotoBrowser: 0x7c104c00]

[ignus001]

Fixed by doing this.

         if stack[stack.count-1].dynamicType == MWPhotoBrowser.self{
            var newstack : [UIViewController] = []
            for (var x = 0 ; x < stack.count; x++){
                if x != stack.count-1{
                    newstack.append(stack[x])
                }
            }

            navigationController?.setViewControllers(newstack, animated: false)

            let nav = UINavigationController(rootViewController: stack[stack.count-1])
            nav.modalTransitionStyle = UIModalTransitionStyle.CrossDissolve
            presentViewController(nav, animated: true, completion: nil)
        }else{
            navigationController?.setViewControllers(stack, animated: true)
        }

Creating a new stack minus the MWPhotoBrowser, setViewController unanimated, then manually adding the MWPhotoBrowser on the new stack using

            let nav = UINavigationController(rootViewController: stack[stack.count-1])
            nav.modalTransitionStyle = UIModalTransitionStyle.CrossDissolve
            presentViewController(nav, animated: true, completion: nil)

works on iOS9, XCode 7.2.1

[PedroAnibarro1]

I fixed the error by doing what @surendraraju said. Although, I'm still having the issue that @zhugexiaobo have of not being able to swipe to next/prev image.

This happens to me when importing photos using DKImagePickerController pod. When the user finishes selecting photos and importing them, I refresh my MWPhotoBrowser and this happens. When I select one of the just imported photos, the last not imported photo appear instead of the selected imported photo. Any ideas?

[joyfementira]

@surendraraju , How can i implement that code? Where i can find the those class and method?

[surendraraju]

@joyfementira Go to the class file MWZoomingScrollView.m , if you don't know where the class is , use search option in the navigation area of the Xcode IDE. And go to the instance method showLoadingIndicator, you can search for it as well. And replace the above given code with first 3 lines of that method.