The correct keyboard height cannot be obtained while the keyboard is rising On iOS

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1

Godot Version

4.5.1

Question

I tried to prevent the bottom input box from being covered by the virtual keyboard by DisplayServer.virtual_keyboard_get_height() and setting the margin bottom in the process function:

func _process(delta: float) -> void:
	var keyboard_height: int = DisplayServer.virtual_keyboard_get_height()
	var scaled_keyboard_height: float = ControlUtils.calculate_scaled_size(Vector2(0, keyboard_height)).y
	var margin_bottom = (origin_margin_bottom + int(scaled_keyboard_height)) if is_visible else origin_margin_bottom
	add_theme_constant_override("margin_bottom", margin_bottom)

However, on iOS, the input box does not dynamically rise and fall during the virtual keyboard’s appearance and disappearance process, it only moves to the start and end positions with a significant delay, whereas the behavior on Android meets expectations:

By printing the keyboard height, it was found that during the keyboard’s rise and fall process, Android will output values between 0 and the maximum keyboard height in real time, while iOS will only output two values: 0 and the maximum keyboard height.

Android:
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 478
virtual_keyboard_get_height: 601
virtual_keyboard_get_height: 601
virtual_keyboard_get_height: 683
virtual_keyboard_get_height: 756
virtual_keyboard_get_height: 804
virtual_keyboard_get_height: 837
virtual_keyboard_get_height: 860
virtual_keyboard_get_height: 873
virtual_keyboard_get_height: 880
virtual_keyboard_get_height: 882
virtual_keyboard_get_height: 882
virtual_keyboard_get_height: 882
...

iOS:
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 0
virtual_keyboard_get_height: 1008
virtual_keyboard_get_height: 1008
virtual_keyboard_get_height: 1008
...

Is there any way to solve my iOS input box rising issue?

2

maybe iOS is specific on how it handles system animations? Because it only jumps when the system keyboard animation is done. I tried looking around for people a talking about this but couldn’t really find anything. I don’t have iPhone but I wonder how other apps handle this.