如何限制AlertDialog的高度 [英] How to constrain height of AlertDialog

问题描述

我显示其中带有列表的对话框.

I show dialog with list inside it.

    showDialog(
        context: context,
        builder: (context) {
          return AlertDialog(
            title: Text(select_conference),
            content: ListView.separated(
              itemCount: selected.length,
              separatorBuilder: (context, index) => CommonDivider(),
              itemBuilder: (context, index) => ListTile(...),
            ),
          );
        });

但是无论有多少元素-对话框都会填充所有可用高度.有什么解决方案可以解决此问题，而无需计算列表元素的高度?

But no matter how many elements is has - dialog fills all available height. Is there any solution to solve this without calculating height of list elements?

推荐答案

您可以将其包装在SizedBox或ConstrainedBox

ConstrainedBox(
  constraints: BoxConstraints(maxHeight: 100.0),
  child: AlertDialog(
    ...
  ),
);

或者，您可以在ListView中将shrinkWrap设置为true，以使其占用的垂直空间最少.

Alternatively, you can set shrinkWrap to true in your ListView so that it takes the least amount of vertical space necessary.

ListView(
  shrinkWrap: true,
  ...
)

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