iOS 颜色转图片

-(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();returntheImage;

}

调用：

 [self createImageWithColor:[UIColor whiteColor]]