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iosobjective-cuiviewcgaffinetransform

iOS: Mirror content on screen

I would like to know if it is possible to flip the contents of a UIView within the same device; meaning not to an external monitor but on the device itself.

I have searched a bit on google, but all I can find is to external screens.

Solution

  • You can use CGAffineTransformMakeScale with negative values. Like:

    CGAffineTransformMakeScale(1.0, -1.0);

    This can be applied on the view by: 

    //Mirror top to bottom
view.transform = CGAffineTransformMakeScale(1.0, -1.0);

    or

    //Mirror Left to Right
view.transform = CGAffineTransformMakeScale(-1.0, 1.0);