How to make flutter screen unclosable?

Question

I am working on a flutter application, where I made my custom loading bar, so whenever I set the value of loading bar *true, it shown up. But the main problem is, when I hit the back button, It goes back and loading bar get closed. I want it to never close. And again, I am not talking about showDialog function. Please help me flutter developers. Thank you.

I used Stack for that, I mean Stack contains 2 children, first the main page code, and second custom loading bar code, and I used GetX to show or hide the loading bar — Aman Programmer, May 23 '23 at 15:01

score 1 · Answer 1 · answered May 23 '23 at 15:13

1

You probably need to use the widget WillPopScope: it prevents the user from closing/going back unless the condition specified in the onWillPop argument is true. Just set onWillPop to always return false , and you should be good to go.

See here.

answered May 23 '23 at 15:13

il_boga

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score 1 · Accepted Answer · answered May 23 '23 at 15:14

Yes, we're talking about WillPopScope. This will catch event your press back button in Android or swipe back in iOS. All you need is just wrap your Scaffold inside WillPopScope:

WillPopScope(
      onWillPop: () async {
        // do something...
      },
      child: Scaffold()
)

References:

How to make flutter screen unclosable?

2 Answers2