1.截取特定view
- (UIImage*)screenView:(UIView *)view{
if(&UIGraphicsBeginImageContextWithOptions != NULL)
{
UIGraphicsBeginImageContextWithOptions(view.frame.size, NO, 0.0);
} else {
UIGraphicsBeginImageContext(view.frame.size);
}
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
2.截取scrollView的所有，包括下面没显示的（UITabelview，UIWebView类似）
- (UIImage*)getCapture
{
UIImage* viewImage = nil;
UIScrollView *scrollView = self.webView.scrollView;
UIGraphicsBeginImageContextWithOptions(scrollView.contentSize, scrollView.opaque, 0.0);
{
CGPoint savedContentOffset = scrollView.contentOffset;
CGRect savedFrame = scrollView.frame;
scrollView.contentOffset = CGPointZero;
scrollView.frame = CGRectMake(0, 0, scrollView.contentSize.width, scrollView.contentSize.height);
[scrollView.layer renderInContext: UIGraphicsGetCurrentContext()];
viewImage = UIGraphicsGetImageFromCurrentImageContext();
scrollView.contentOffset = savedContentOffset;
scrollView.frame = savedFrame;
}
UIGraphicsEndImageContext();
return viewImage;
}
