iOS中将颜色转为图片

- (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;

}