Как добавить текст-заполнитель в UITextView, но во всех случаях (даже при смене ОС) точно совпадать с позиционированием

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The problem is:
absolutely, exactly, definitively finding the identical position so that the placeholder is always precisely where the main text is.
(Thus, if your placeholder text is "Add your comment" you should be able to type "Add your comment" and it's absolutely identical.)
Of course, you can trivially set the text font/etc the same, but how to absolutely match the positioning, even as Apple inevitably slightly moves things around inside UITextView, and depending on what it is inside, it's own size etc etc.
How to?

Источник: https://stackoverflow.com/questions/725 ... ith-changi

1710185325

Гость


Как следует из названия, добавить заполнитель к[code]UITextView[/code].
Simply use [code].textDidChangeNotification[/code] and add a [code]CATextLayer[/code] or even just a [code]UILabel[/code].
The problem is:
absolutely, exactly, definitively finding the [b]identical position[/b] so that the placeholder is always precisely where the main text is.
(Thus, if your placeholder text is "Add your comment" you should be able to type "Add your comment" and it's absolutely identical.)
Of course, you can trivially set the text font/etc the same, but how to absolutely match the positioning, even as Apple inevitably slightly moves things around inside UITextView, and depending on what it is inside, it's own size etc etc.
How to?
 

Источник: [url]https://stackoverflow.com/questions/72584880/how-to-add-a-placeholder-text-to-uitextview-but-in-all-cases-even-with-changi[/url]