How do I need to do to take the input to the entire screen?

Unity Engine
1

I want to accept the drag input to the entire screen, what might do.
Even with the EventTrigger objects only RectTransform, I could not touch input.
I can now when in the Image of alpha 0, but I do not think this is a good way.
What way or will good?

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2

I also want to know this. Putting an image with alpha 0 fulling the entire screen or even a part of the screen just to detect touch, drag, etc is logically bad on mobile because of the transparency? Maybe I’m not understanding how the uGUI works.

3

Ok from an other post, @Tim-C said that an image with alpha set to 0 won’t be renderer at all, so it won’t affect performance. New UI system (4.6) - trying to add an eventTrigger on an empty rectTransform - Unity Engine - Unity Discussions

4

Thank you. It was very useful information. I was very helpful.

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