ios how to capture a particular portion of screen

Question

I want to capture a particular portion of iPhone screen. I used UIGraphicsBeginImageContextWithOptions, but couldn\'t capture a portion of screen with this. Ple

Answer 1

the answer by @Superdev is right on spot , what i want to add is a little trick if you want to capture a parent view and avoid subviews ( in particular overlay view ) what you can do is make this subview a property and use the following

CGFloat width = CGRectGetWidth(self.view.bounds);
CGFloat height = CGRectGetHeight(self.view.bounds);
_overlayView.hidden = YES;
UIGraphicsBeginImageContext(self.view.bounds.size);

[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

CGRect rect = CGRectMake(0,0 ,width, height);
CGImageRef imageRef = CGImageCreateWithImageInRect([viewImage CGImage], rect);

UIImage *img = [UIImage imageWithCGImage:imageRef];

UIImageWriteToSavedPhotosAlbum(img, nil, nil, nil);

CGImageRelease(imageRef);

_overlayView.hidden = NO;

its a small trick , hope someone will find it useful