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[iOS] Create rounded corner UIView

To make your view has rounded corner, just add the simple code below:

imageView.layer.cornerRadius

And don't forget to add QuartzCore lib unless you want to see nothing happend.

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[iOS] Take screenshot of UIView

Sometimes, you need to create a receipt or filling data to an e-ticket so that user can save it into their Camera Roll. 

Here is how you do it: 1. Create an UIView as a template of your receipt.  2. Put the code below to where you want to create the receipt.

NSString* xibName = @"ReceiptView"; // Your receipt view ReceiptView *targetView = [[[NSBundle mainBundle] loadNibNamed:xibName owner:self options:nil] firstObject]; // This is where you put your data to the view [targetView.priceLabel setText:[NSString stringWithFormat:@"$%@", price]]; // ... CGRect frame = targetView.frame; UIGraphicsBeginImageContext(frame.size); CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextScaleCTM(ctx, 2, 2); CGContextTranslateCTM(ctx, -targetView.frame.origin.x, -targetView.frame.origin.y); [targetView.layer renderInContext:ctx]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); // Request to save the image to camera roll [library writeImageToSavedPhotosAlbum:[viewImage CGImage] orientation:(ALAssetOrientation)[viewImage imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){ if (error) { NSLog(@"Error writing image"); } else { NSLog(@"Image saved at %@", assetURL); if (success) { success(viewImage); } } }];