//用颜色填充替代图片
+ (UIImage *)imageWithColor:(UIColor *)color {
return [self imageWithColor:color size:CGSizeMake(1, 1)];
}
+ (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size {
if (!color || size.width <= 0 || size.height <= 0)
return nil;
CGRect rect = CGRectMake(0.0f, 0.0f, size.width, size.height);
UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, color.CGColor);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}