iOS对某一个view截图方法

最新推荐文章于 2022-03-03 16:16:53 发布

songkuipeng

最新推荐文章于 2022-03-03 16:16:53 发布

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分类专栏： ios开发文章标签： iOS对某一view

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方法一
- (UIImage )snapsHotView:(UITableView )view
{

UIGraphicsBeginImageContextWithOptions(view.bounds.size,NO,[UIScreen mainScreen].scale);
[view drawViewHierarchyInRect:view.bounds afterScreenUpdates:NO];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;

}
方法二-截取超出屏幕的部分（scrollview）
- (UIImage*)getCapture
{

UIImage* viewImage = nil;
UITableView *scrollView = self.tableView;
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;

}