Offstage Widget

[Harsh Bhikadia]

I am new to flutter.

Does Offstage Widget lazy build (when first time visible) the child or it is loaded at the beginning only?

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Harsh Bhikadia bhikadia.com

[Ian Hickson]

Offstage is the same as any other widget, the only difference is that its contents don't paint. It's only useful in rare situations where you want to layout and measure a child without painting it.

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Ian Hickson

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[Harsh Bhikadia]

Can it be used for navigation of sister pages (like tabs or drawer?)

In my app i have a backdrop, i want to use backlayer for displaying navigation menu (5 screens) and front layer to display that page. is using a stack of offpage children a good idea to do that? or should use Navigator ??

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Harsh Bhikadia bhikadia.com

[Ian Hickson]

I'm not sure how OffStage could be used to do what you describe.

[Harsh Bhikadia]

displaying the layer which is at the time currently selected and others are "offstage"

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Harsh Bhikadia bhikadia.com

[Ian Hickson]

If the others aren't needed, just don't include them in the build at all, no need for Offstage.

[Harsh Bhikadia]

I want the backdrop animation, backlayer to remain as it is, just to change the frontlayer of backdrop layout.

How can I use Navigator to just update that part of the screen. Is it even possible? The tutorials is see on internet about Navigator are all updating the complete screen.

I come from android background, we used to do it with fragments.

I saw this article though : https://medium.com/coding-with-flutter/flutter-case-study-multiple-navigators-with-bottomnavigationbar-90eb6caa6dbf  where he drops in a Navigator Widget inside the body of Scaffold. Do you think it will work for me?

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Harsh Bhikadia bhikadia.com

[Ian Hickson]

I'm not really sure I understand what effect you're trying to do. If you just want to put things on top of other things, Stack is the usual solution, maybe with an AnimatedPosition if you have an animation.

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Ian Hickson

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