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POiphone full screen resized image preview
 

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  1. POiphone full screen resized image preview
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    <p>I have a view with UIImageview of width 75 and height 75. I capture an image from Camera or Photo Library,resize it and set to imageview.</p> <p>The captured image is uploaded to server but resized image is uploaded and quality of image is lost. A blur image is viewed while retrieving from server.</p> <p>Now, what i need is, whenever i tap on imageview a full screen image preview should display and image with high quality should be uploaded instead of resized image</p> <p>I resized image using the following code</p> <pre><code>- (UIImage*)imageWithImage:(UIImage*)sourceImage scaledToSize:(CGSize)newSize; { CGFloat targetWidth = newSize.width; CGFloat targetHeight = newSize.height; NSLog(@"target Width:%f",targetWidth); NSLog(@"target Height:%f",targetHeight); CGImageRef imageRef = [sourceImage CGImage]; CGBitmapInfo bitmapInfo = CGImageGetBitmapInfo(imageRef); CGColorSpaceRef colorSpaceInfo = CGImageGetColorSpace(imageRef); if (bitmapInfo == kCGImageAlphaNone) { bitmapInfo = kCGImageAlphaPremultipliedLast; } CGContextRef bitmap; if (sourceImage.imageOrientation == UIImageOrientationUp || sourceImage.imageOrientation == UIImageOrientationDown) { bitmap = CGBitmapContextCreate(NULL, targetWidth, targetHeight, CGImageGetBitsPerComponent(imageRef), CGImageGetBytesPerRow(imageRef), colorSpaceInfo, bitmapInfo); NSLog(@"ImageOrientation UP/DOWN"); } else { bitmap = CGBitmapContextCreate(NULL, targetHeight, targetWidth, CGImageGetBitsPerComponent(imageRef), CGImageGetBytesPerRow(imageRef), colorSpaceInfo, bitmapInfo); } if (sourceImage.imageOrientation == UIImageOrientationLeft) { NSLog(@"ImageOrientation LEFT"); CGContextRotateCTM (bitmap, radians(90)); CGContextTranslateCTM (bitmap, 0, -targetHeight); } else if (sourceImage.imageOrientation == UIImageOrientationRight) { NSLog(@"ImageOrientation RIGHT"); CGContextRotateCTM (bitmap, radians(-90)); CGContextTranslateCTM (bitmap, -targetWidth, 0); } else if (sourceImage.imageOrientation == UIImageOrientationUp) { NSLog(@"ImageOrientation UP/DOWN"); // NOTHING } else if (sourceImage.imageOrientation == UIImageOrientationDown) { CGContextTranslateCTM (bitmap, targetWidth, targetHeight); CGContextRotateCTM (bitmap, radians(-180.)); } // CGContextSetInterpolationQuality(bitmap, 1); CGContextDrawImage(bitmap, CGRectMake(0, 0, targetWidth, targetHeight), imageRef); CGImageRef ref = CGBitmapContextCreateImage(bitmap); UIImage* newImage = [UIImage imageWithCGImage:ref]; CGContextRelease(bitmap); CGImageRelease(ref); return newImage; } </code></pre> <p>Please help me</p>
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    1. PO
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    1. PTQuestion
    1. This table or related slice is empty.
    1. USduk
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    1. This table or related slice is empty.
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    1. VO
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      1. POiphone full screen resized image preview
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      1. VTUpMod
    1. COSo instead of resizing it to small size of 75x75 you could just display it in a small imageView by just changing the content mode. It wont a bad idea for a single image.
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      1. USRobin
    2. CO@robin:App crashes on device if i update an image leaving Memory warning
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      1. USduk
 

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