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POObjective c - UIImage resizing issue
 

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  1. POObjective c - UIImage resizing issue
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    <p>I have a resource (.png file) that show a picture frame (border).<br> This .png file is size 100x100px, and the border width is 10px. </p> <p><img src="https://i.stack.imgur.com/6Y1Ts.png" alt="my original image"></p> <p><strong>My Question:</strong> </p> <p>How can I create another UIImage from this image, with a different size, without ruin the border's width?</p> <p><strong>The Problem:</strong></p> <p>When I try to draw the new image from the original image with <code>CGContextDrawImage</code> I get a new image with the new size, but my border proportion is ruin. </p> <pre><code> CGRect newRect = CGRectIntegral(CGRectMake(0, 0, newWidth, newHeight)); CGImageRef imageRef = //... the image // Build a context that's the same dimensions as the new size CGContextRef bitmap = CGBitmapContextCreate(NULL, newRect.size.width, newRect.size.height, CGImageGetBitsPerComponent(imageRef), 0, CGImageGetColorSpace(imageRef), CGImageGetBitmapInfo(imageRef)); // Set the quality level to use when rescaling CGContextSetInterpolationQuality(bitmap, kCGInterpolationHigh); // Draw into the context; this scales the image CGContextDrawImage(bitmap, newRect, imageRef); // Get the resized image from the context and a UIImage CGImageRef newImageRef = CGBitmapContextCreateImage(bitmap); UIImage *newImage = [UIImage imageWithCGImage:newImageRef]; // Clean up CGContextRelease(bitmap); CGImageRelease(newImageRef); </code></pre> <p>For example, when I tried to create an image size 800x100p, I get an image with very thin top and bottom border. </p> <p><img src="https://i.stack.imgur.com/bCnDa.png" alt="the bad result I get"> </p> <p>What I need is that the border will stay the same width<br> <img src="https://i.stack.imgur.com/YxX64.png" alt="enter image description here"></p> <p><strong>*note</strong><br> Using <code>resizableImageWithCapInsets:</code> wont help me, because I need a new image with the new size to save on the disc.</p>
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    1. CODoes it have to be a resource? I'm sure there's a way to add borders with width and color programmatically. I take it this isn't an option for you(if you'd want a custom border etc), just making sure.
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    2. COya it's have to be..
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