let color = UIColor.redColor() let size = CGSize(width: 200, height: 200) UIGraphicsBeginImageContextWithOptions(size, false, 0.0) CGContextSetFillColorWithColor(UIGraphicsGetCurrentContext(), color.CGColor) CGContextFillRect(UIGraphicsGetCurrentContext(), CGRect(origin: .zero, size: size)) let colorImage = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext()
let color = UIColor.red() let size = CGSize(width: 200, height: 200) UIGraphicsBeginImageContextWithOptions(size, false, 0.0) if let context = UIGraphicsGetCurrentContext() { context.setFillColor(color.cgColor) context.fill(CGRect(origin: .zero, size: size)) let colorImage = UIGraphicsGetImageFromCurrentImageContext() } UIGraphicsEndImageContext()
将此方法添加为的扩展UIImage:
+ (UIImage *)createImageWithColor: (UIColor *)color { CGRect rect=CGRectMake(0.0f, 0.0f, 1.0f, 1.0f); UIGraphicsBeginImageContext(rect.size); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetFillColorWithColor(context, [color CGColor]); CGContextFillRect(context, rect); UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return theImage; }