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POiPhone - Manipulating/Editing & Saving Images (High Res)
 

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    <p>In the app i'm working on I have a section where I let users load in an image using UIImagePicker (either from their photo library or taking a new picture), doing so usually gives a big image resolution..2500x2000 (or something similar)</p> <p>Now i load that image into an UIImageView (lets just say 400x320). I then allow the user to select other images/objects to overlay ontop of the original image and move those around/resize them before they can either save the new picture to their Photo Library or email it.</p> <p>I was just wondering what the best way to save the image would be so that the image res is still as high as the original was....right now i'm just taking a screenshot but that leaves me with a small 400x320 image.</p> <p>Thanks!</p> <hr> <p>So i got what i wanted, not sure if i did it the correct way or not.</p> <p>Here's basically what i did.</p> <pre><code>//NEWWIDTH and NEWHEIGHT are double the width and height of the UIImageView that i can edit the pictures in CGSize newSize = CGSizeMake(NEWWIDTH, NEWHEIGHT); UIGraphicsBeginImageContext(newSize); //i'm resizing myOriginalImage before to how i want [myOriginalImage drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)]; UIImage *image; //Here i go through all the other pictures i added on top and go the same drawInRect method for each of them...multiplying each value x,y,height,width by 2 UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; </code></pre>
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