CGAffineTransformInvert: singular matrix in UIImagePickerController with showsCameraControls = NO

Question

I tried this twice with two different apps and I get the same thing. I have a set up a UIImagePIckerController instance as follows:

- (IBAction)addImage:(UIB         


        

Answer 1

I believe it to be largely benign as Apple's own PhotoPicker sample code generates this warning. Rotation has to do with matrices and while I'm not sure which matrix in particular is getting rotated, it is considered a mathematical violation to perform operations on matrices with a determinant of zero (similar to dividing by zero). Such a matrix is not invertible or 'singular':

http://en.wikipedia.org/wiki/Rotation_matrix

http://en.wikipedia.org/wiki/Determinant

http://en.wikipedia.org/wiki/Singular_matrix#singular