ios - How to set the colors in glowing effect of a UILabel? -


we can typically set fontcolor of uilabel by:

label.textcolor = self.sometextcolor;

and shadow (glow) by:

label.layer.shadowcolor = self.someglowcolor; label.layer.shadowoffset = cgsizemake(0.0, 0.0); label.layer.shadowradius = 3.0; label.layer.shadowopacity = 0.5;

it'ok simple shadow. however, how can set font color fancy glowing effect? example:

enter image description here

provided a color @ center, b color @ font boundary, , c glow effect. how can use ios api achieve effect shown in diagram?


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