您如何关闭 AlertDialog 和运行一些代码？

Question

问题

所以我的 flutter 应用程序中有一个 AlertDialog，它有两个按钮：yes 和 no。无论单击哪个按钮，我都希望弹出窗口被关闭，但是如果按下 yes，我也想运行一些代码。

我的代码

showDialog(context: context, builder: (_) => AlertDialog(
                            title: Text("Delete?"),
                            content: Text("Do you want to delete this task?"),
                            actions: [
                              MaterialButton(child: Text("Yes"),onPressed: () => Navigator.pop(context)),
                              MaterialButton(child: Text("No"), onPressed: () => Navigator.pop(context)),
                            ],
                          ), barrierDismissible: true);

我将不胜感激任何人的帮助

Answer 1

这是我解决同样问题的方法。我不确定是否有更简洁的方法

bool yesPressed = false;

showDialog(
        context: context,
        builder: (_) => AlertDialog(
              title: Text("Delete?"),
              content: Text("Do you want to delete this task?"),
              actions: [
                MaterialButton(
                    child: Text("Yes"),
                    onPressed: () {
                      yesPressed = true;
                      Navigator.pop(context);
                    }),
                MaterialButton(
                    child: Text("No"),
                    onPressed: () => Navigator.pop(context)),
              ],
            ),
        barrierDismissible: true)
    .then((value) {
  if (yesPressed) {
    // Do something
  }
});

Answer 2

您可以在调用 Navigator.pop 时简单地添加一个值，该值将通过 Future 从 showDialog 返回。这是一个代码示例：

showDialog<bool>(
   context: context,
   builder: (_) => AlertDialog(
      title: Text("Delete?"),
      content: Text("Do you want to delete this task?"),
      actions: [
         MaterialButton(child: Text("Yes"),onPressed: () => Navigator.pop(context, true)),
         MaterialButton(child: Text("No"), onPressed: () => Navigator.pop(context, false)),
      ],
   ),
   barrierDismissible: true,
).then((bool hasTappedOnYes) {
   if (hasTappedOnYes) {}
   else {}
});

Answer 3

试试这个

actions: [
     MaterialButton(child: Text("Yes"),onPressed: () {
        //do something
        Navigator.pop(context))
     }),
     MaterialButton(child: Text("No"), onPressed: () => Navigator.pop(context)),
],

您如何关闭 AlertDialog 和运行一些代码？

How do you dismiss an AlertDialog and run some code?

popup

dart

flutter

您如何关闭 AlertDialog 和 运行 一些代码？

How do you dismiss an AlertDialog and run some code?

popup

dart

flutter

您如何关闭 AlertDialog 和运行一些代码？