UIImage 和 UIColor 互转

UIColor -> UIImage

/** *  根据颜色和大小获取Image * *  @param color 颜色 *  @param size  大小 * */+ (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size{    UIGraphicsBeginImageContextWithOptions(size, 0, [UIScreen mainScreen].scale);    [color set];    UIRectFill(CGRectMake(0, 0, size.width, size.height));    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();    return image;}

UIImage -> UIColor

UIColor *color = [UIColor colorWithPatternImage:[UIImageimageNamed:@"Background"]]