iOS:图片URL转UIImage；UIColor转UIImage

//url->UIImage

-(UIImage *) getImageFromURL:(NSString *)fileURL {

    UIImage*result;

    NSData * data = [NSData dataWithContentsOfURL:[NSURL URLWithString:fileURL]];

    result = [UIImage imageWithData:data];

    return result;

}

//  颜色转换为背景图片UIColor->UIImage

- (UIImage*)imageWithColor:(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 *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return image;

}