iOS中UIImage和UIColor之间的转换

  //UIColor 转UIImage

- (UIImage*)imageWithColor: (UIColor*)color

{   

    CGRect rect=CGRectMake(0.0f,0.0f, 100.0f,50.0f);

    UIGraphicsBeginImageContext(rect.size);

    CGContextRef context =UIGraphicsGetCurrentContext();

    CGContextSetFillColorWithColor(context, [colorCGColor]);

   CGContextFillRect(context, rect);

    UIImage *Image =UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

   return Image;

}

  //UIImage转UIColor

   UIButton *Button = [[UIButtonalloc] initWithFrame:CGRectMake(20,200, 100, 50)];

   UIImage *image = [UIImageimageNamed:@"radio_bn.png"];   

    [cancelButton setBackgroundColor:[UIColorcolorWithPatternImage:image]];

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