第43月第10天 uiimage写文件

1.

-(void)saveImage:(CGImageRef)image directoryURL:(NSURL*)directoryURL filename:(NSString*)filename {
    @autoreleasepool {

        NSURL *fileURL = [directoryURL URLByAppendingPathComponent:filename];

        //    fileURL = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/%@", directory, filename]];

        CFURLRef url = (__bridge CFURLRef)fileURL;
        CGImageDestinationRef destination = CGImageDestinationCreateWithURL(url, kUTTypePNG, 1, NULL);
        CGImageDestinationAddImage(destination, image, nil);

       if (!CGImageDestinationFinalize(destination))
           NSLog(@"ERROR saving: %@", url);

       CFRelease(destination);
    //   CGImageRelease(image);

        NSLog(@"saveImage: %@", fileURL);
    }
}

+ (UIImage *)imageWithColor:(UIColor *)color AndRect:(CGRect)rect{

    UIGraphicsBeginImageContext(rect.size);

    CGContextRef context = UIGraphicsGetCurrentContext();



    CGContextSetFillColorWithColor(context, [color CGColor]);

    CGContextFillRect(context, rect);



    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();



    return image;

}