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Rendering all the cells of UITableview at once to generate tableview screenshot

Time:11-30

I have a view controller with the below UI layout.

There is a header view at the top with 3 labels, a footer view with 2 buttons at the bottom and an uitableview inbetween header view and footer view. The uitableview is dynamically loaded and on average has about 6 tableview cells. One of the buttons in the footer view is take screenshot button where i need to take the screenshot of full tableview. In small devices like iPhone 6, the height of the table is obviously small as it occupies the space between header view and footer view. So only 4 cells are visible to the user and as the user scrolls others cells are loaded into view. If the user taps take screen shot button without scrolling the table view, the last 2 cells are not captured in the screenshot. The current implementation tried to negate this by changing table view frame to table view content size before capturing screenshot and resetting frame after taking screenshot, but this approach is not working starting iOS 13 as the table view content size returns incorrect values.

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