Xamarin.Forms Animations 中的“屏幕外”和“屏幕上”是什么？

Question

In the docs for TranslateTo it says:

To animate a view that receives user touch input from outside of the screen, the developer must first lay out the view in its final position, then translate the view off screen, and then finally animate the view back to its final position on the screen . [emphasis mine]

Also in Simple Animations in Xamarin.Forms (in the Note) it says:

If an element is initially laid out off screen and then translated onto the screen, after translation the element's input layout remains off screen and the user can't interact with it. Therefore, it's recommended that a view should be laid out in its final position, and then any required translations performed . [emphasis mine]

What does that mean in code?

Answer 1

According to a comment above , it seems like the answer is that we need to:

child.X = <destination (which is somewhere that the user can see)>
child.TranslateX = <somewhere not seen>
child.TranslateTo(0)

(pseudo code as I can't test it at this moment)