How to create concave shape of a UIView

Question

Is it possible to make a concave shape of the side of a view?

I managed to round the edges with border radius, but I wonder if it's possible to make other nice transformations. Here is the example:

1)This is my progress so far:

2)This is how it should be:

Is it possible to make a view look this way programmatically? If not, I guess I'll use a png image to achieve this, but it's always nicer to finish these sort of stuff through code

Answer 1

You can use UIBezierPath/CGPath to achieve this.

There is a good documentation from Apple about drawing, giving you hints ont curves, lines, etc:

Once you created your shape:

CAShapeLayer *maskLayer = [CAShapeLayer layer];
[maskLayer setFrame:[viewToMask bounds]];
[maskLayer setPath:[theBezierPath CGPath]];
[viewToMask layer] setMask = layer;