Question

现在Instagram应用程序可以处理和发布该应用程序内的非方形图像，我希望我可以使用相同的提供的iPhone挂钩从我的应用程序向Instagram应用程序发送非方形图像我已经一直在使用（https://instagram.com/developer/iphone-hooks/?hl=en）。然而，它仍然似乎是将我的图像裁剪成方形，而不是让我选择将它们扩展到非方形尺寸（不像我从Instagram应用程序直接在图库中加载非方形照片时它让我将其扩展到非方形原始尺寸）。任何人都有运气发送非方形图像？我希望有一些调整可以使它发挥作用。

Answer 1

我也希望他们会在更新时拍摄非方形照片，但是您仍然坚持使用旧的解决方案来发布非方形照片......将它们变成白色方形。

https://github.com/ShareKit/ShareKit/blob/master/Classes/ShareKit/Sharers/Services/Instagram/SHKInstagram.m

- (UIImage *)imageByScalingImage:(UIImage*)image proportionallyToSize:(CGSize)targetSize {

UIImage *sourceImage = image;
UIImage *newImage = nil;

CGSize imageSize = sourceImage.size;
CGFloat width = imageSize.width;
CGFloat height = imageSize.height;

CGFloat targetWidth = targetSize.width;
CGFloat targetHeight = targetSize.height;

CGFloat scaleFactor = 0.0;
CGFloat scaledWidth = targetWidth;
CGFloat scaledHeight = targetHeight;

CGPoint thumbnailPoint = CGPointMake(0.0,0.0);

if (CGSizeEqualToSize(imageSize, targetSize) == NO) {

    CGFloat widthFactor = targetWidth / width;
    CGFloat heightFactor = targetHeight / height;

    if (widthFactor < heightFactor)
        scaleFactor = widthFactor;
    else
        scaleFactor = heightFactor;

    scaledWidth  = width * scaleFactor;
    scaledHeight = height * scaleFactor;

    // center the image

    if (widthFactor < heightFactor) {
        thumbnailPoint.y = (targetHeight - scaledHeight) * 0.5;
    } else if (widthFactor > heightFactor) {
        thumbnailPoint.x = (targetWidth - scaledWidth) * 0.5;
    }
}


// this is actually the interesting part:

UIGraphicsBeginImageContext(targetSize);

[(UIColor*)SHKCONFIG(instagramLetterBoxColor) set];
CGContextFillRect(UIGraphicsGetCurrentContext(), CGRectMake(0,0,targetSize.width,targetSize.height));

CGRect thumbnailRect = CGRectZero;
thumbnailRect.origin = thumbnailPoint;
thumbnailRect.size.width  = scaledWidth;
thumbnailRect.size.height = scaledHeight;

[sourceImage drawInRect:thumbnailRect];

newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

if(newImage == nil) NSLog(@"could not scale image");

return newImage ;

}

Instagram iOS挂钩与非方形图像

1 个答案: