For iOS developers，The face of app piracy，The biggest problem is not a technical break，Instead, more and more sharing of pirated Apple ID，Some people might say that piracy is equivalent to a "trial" of the，Like people will naturally go into positive ...... but in fact，Because of penny share account of piracy，Led to numerous independent developers and ultimately to the vote resume。
Anyway，last year，Surge author[……]
On iOS，If we want to display a shadow View，So basically do：
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self.view.layer?.shadowColor = NSColor.black.cgColor self.view.layer?.shadowOpacity = 0.1 self.view.layer?.shadowOffset = CGSize(width: 0, height: 0) self.view.layer?.shadowRadius = 3 self.view.layer?.masksToBounds = false |
but，To the macOS，This would not work - no effect。
The answer lies in the macOS a View If you want to use [crayon-674123c[……]