如何在使用LGViewHUD控件時設置自定義背景？

Question

我正在使用LGViewHUD custom control在iOS應用程序中顯示HUD。我如何爲此HUD設置自定義背景？

此行爲的一個例子可以在這裏找到：

Answer 1

使用此代碼在您的UIView -drawRect:方法

 size_t locationsCount = 2; 
     CGFloat locations[2] = {0.0f, 1.0f}; 
     CGFloat colors[8] = {0.0f,0.0f,0.0f,0.0f,0.0f,0.0f,0.0f,0.75f}; 
     CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); 
     CGGradientRef gradient = CGGradientCreateWithColorComponents(colorSpace, colors, locations, locationsCount); 
     CGColorSpaceRelease(colorSpace); 

     CGPoint center = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2); 
     float radius = MIN(self.bounds.size.width , self.bounds.size.height) ; 
     CGContextDrawRadialGradient (context, gradient, center, 0, center, radius, kCGGradientDrawsAfterEndLocation); 
     CGGradientRelease(gradient); 

這是從here（線189）