flutter Material3警报对话框操作未居中

brgchamk 于 7个月前发布在 Flutter

关注(0)|答案(4)|浏览(57)

我正在制作一个带有2个按钮的警报对话框，在material2中，alertdialog的对齐工作正常，两个按钮居中，但一旦我更新到material3版本，两个按钮都对齐到右侧，添加actionsalign并没有解决问题或移动按钮。
我想“用相机扫描”和“从图像读取”按钮将水平居中。代码：

AlertDialog(
      actionsAlignment: MainAxisAlignment.center,
      alignment: Alignment.bottomCenter,
      actions: [
        Text("Testing"),
        // scan with camera
        TextButton(
            onPressed: () {
            },
            child: Text("Scan with Camera")),
        // read from image
        TextButton(
            onPressed: () {
            },
            child: Text("Read from image"))
      ],
    ))

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flutter

来源：https://stackoverflow.com/questions/77499352/material3-alert-dialog-actions-not-centered

4条答案

按热度按时间

zysjyyx41#

默认情况下，actionsOverflowAlignment使用OverflowBarAlignment.end。

AlertDialog(
   actionsOverflowAlignment: OverflowBarAlignment.center,

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赞(0）回复(0）举报 7个月前

elcex8rz2#

试试这个

AlertDialog(
                    content: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      mainAxisSize: MainAxisSize.min,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: [
                        Text('Testing'),
                     
                        TextButton(
                          onPressed: () {
                    
                          },
                          child: Text('Scan with Camera'),
                        ),
          
                        TextButton(
                          onPressed: () {
                      
                          },
                          child: Text('Read from image'),
                        ),
                      ],
                    ),
                  );

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赞(0）回复(0）举报 7个月前

hgb9j2n63#

请尝试使用actionsOverflowAlignment: OverflowBarAlignment.center，如下代码所示：

AlertDialog(
          actionsOverflowAlignment: OverflowBarAlignment.center,
          actionsAlignment: MainAxisAlignment.center,
          alignment: Alignment.bottomCenter,
          actions: [
            const Text("Testing"),
            // scan with camera
            TextButton(
                onPressed: () {}, child: const Text("Scan with Camera")),
            // read from image
            TextButton(
                onPressed: () {}, child: const Text("Read from image"))
          ],
        ),

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赞(0）回复(0）举报 7个月前

nimxete24#

你正在添加窗口小部件的行动是左对齐尝试添加你的窗口小部件内容属性像这样

AlertDialog(
        title: const  Text("Testing"), // dialog title
        content: const SingleChildScrollView(
          child: ListBody(
            children: <Widget>[
             
        // scan with camera
        TextButton(
            onPressed: () {
            },
            child: Text("Scan with Camera")),
        // read from image
        TextButton(
            onPressed: () {
            },
            child: Text("Read from image"))
            ],
          ),
        ),
)

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赞(0）回复(0）举报 7个月前

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flutter Material3警报对话框操作未居中

4条答案

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