在Flutter中关闭showDialog之后如何运行代码? [英] How to run code after showDialog is dismissed in Flutter?

问题描述

在关闭/处理了 showDialog()之后如何更新主页?似乎没有 onDispose()函数.

How to update the Homepage just after the showDialog() is dismissed/disposed? Doesn't seem like it has an onDispose() function.

找到另一个可能的答案: WillPopScope 可以帮助检测是否按下了后退按钮.

Found another possible Answer : The WillPopScope can help detect if the back button is pressed.

将在 showDialog 中使用的小部件，在其构建函数中，该小部件可以包装在返回新的WillPopScope(child:______，onWillPop:_______); 该代码可以在 onWillPop 函数中运行.这可以更新下面的主页.

The widget that will be used in the showDialog, in its build function the widget can be wrapped in return new WillPopScope(child: ______, onWillPop: _______); The code can be run in the onWillPop function. This can update the Homepage below.

推荐答案

只需使用 await 或 then .对话框关闭后，将运行 then 块中的代码.

Simply use await or then. the code in then block will be run after the dialog is dismissed.

showDialog(
  // Your Dialog Code
).then((val){
  Navigator.pop(_context);
});

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