如何在底部导航栏中重新加载特定选项卡 flutter？
[英]How to reload a particular tab in bottom navigation bar flutter?
问题描述
I have a bottom navigation bar with 5 tabs, In each tab I have a button that navigates to another separate screen using Navigation.pushNamed() (page 2);
我有一个带有 5 个选项卡的底部导航栏，在每个选项卡中我都有一个使用Navigation.pushNamed()导航到另一个单独屏幕的按钮（第 2 页）； and from (page 2) I pop the screen, now the tab from where I navigated from need to be reloaded.并从（第 2 页）弹出屏幕，现在需要重新加载我从中导航的选项卡。 because i store some data (page 2) and stored in sqflite i need to display the data in one of the tabs.因为我存储了一些数据（第 2 页）并存储在 sqflite 中，所以我需要在其中一个选项卡中显示数据。 Is it possible to reload a particular tab of a bottom navigation bar?是否可以重新加载底部导航栏的特定选项卡？ I tried using Navigator.pop(context,true) that also didnt work.我尝试使用也不起作用的Navigator.pop(context,true) 。 Can some one help me with this, thanks in advance.有人可以帮我解决这个问题，在此先感谢。
2 个解决方案
解决方案1
0 2020-06-08 13:07:43
解决方案2
0 2020-06-08 13:46:41
Flutter by default does not save state (and disposes the widgets). Flutter 默认不保存 state （并处理小部件）。 If you want to save the state of a tab, you can use a PageStorageBucket.如果要保存选项卡的 state，可以使用 PageStorageBucket。 It is really well described in this tutorial:本教程中对此进行了很好的描述：
https://medium.com/@lucassaltoncardinali/keeping-state-with-the-bottom-navigation-bar-in-flutter-69e4168878e1 https://medium.com/@lucassaltoncardinali/keeping-state-with-the-bottom-navigation-bar-in-flutter-69e4168878e1
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