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    <p>I've found a better method that uses the snapshot API whenever possible.</p> <p>I hope it helps.</p> <pre><code>class func screenshot() -&gt; UIImage { var imageSize = CGSize.zero let orientation = UIApplication.shared.statusBarOrientation if UIInterfaceOrientationIsPortrait(orientation) { imageSize = UIScreen.main.bounds.size } else { imageSize = CGSize(width: UIScreen.main.bounds.size.height, height: UIScreen.main.bounds.size.width) } UIGraphicsBeginImageContextWithOptions(imageSize, false, 0) for window in UIApplication.shared.windows { window.drawHierarchy(in: window.bounds, afterScreenUpdates: true) } let image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return image! } </code></pre> <p><a href="https://developer.apple.com/library/ios/qa/qa1817/_index.html#//apple_ref/doc/uid/DTS40014134" rel="noreferrer">Wanna know more about iOS 7 Snapshots?</a></p> <p>Objective-C version:</p> <pre><code>+ (UIImage *)screenshot { CGSize imageSize = CGSizeZero; UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation; if (UIInterfaceOrientationIsPortrait(orientation)) { imageSize = [UIScreen mainScreen].bounds.size; } else { imageSize = CGSizeMake([UIScreen mainScreen].bounds.size.height, [UIScreen mainScreen].bounds.size.width); } UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0); CGContextRef context = UIGraphicsGetCurrentContext(); for (UIWindow *window in [[UIApplication sharedApplication] windows]) { CGContextSaveGState(context); CGContextTranslateCTM(context, window.center.x, window.center.y); CGContextConcatCTM(context, window.transform); CGContextTranslateCTM(context, -window.bounds.size.width * window.layer.anchorPoint.x, -window.bounds.size.height * window.layer.anchorPoint.y); if (orientation == UIInterfaceOrientationLandscapeLeft) { CGContextRotateCTM(context, M_PI_2); CGContextTranslateCTM(context, 0, -imageSize.width); } else if (orientation == UIInterfaceOrientationLandscapeRight) { CGContextRotateCTM(context, -M_PI_2); CGContextTranslateCTM(context, -imageSize.height, 0); } else if (orientation == UIInterfaceOrientationPortraitUpsideDown) { CGContextRotateCTM(context, M_PI); CGContextTranslateCTM(context, -imageSize.width, -imageSize.height); } if ([window respondsToSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)]) { [window drawViewHierarchyInRect:window.bounds afterScreenUpdates:YES]; } else { [window.layer renderInContext:context]; } CGContextRestoreGState(context); } UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return image; } </code></pre>
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    1. POiOS: what's the fastest, most performant way to make a screenshot programmatically?
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    1. POiOS: what's the fastest, most performant way to make a screenshot programmatically?
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    1. CODoes this solution perform any better than the solution offered by the original poster? My own tests suggest it's exactly the same. Overall, I'd go with the original solution since the code is so much simpler.
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      1. USGreg Maletic
    2. CO@GregMaletic: Yes, the other solution it looks simpler but it works over UIView, this one works over UIWindow so it's more complete.
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      1. US3lvis
    3. COI still can't understand why this solution is faster. Most iOS apps contains just one window. Isn't just [self.window.layer renderInContext:context] should be fine?
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      1. USMuhammad Hassan
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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