Flutter 点击图片显示大图

GestureDetector(
  onTap: () {
    // 显示大图
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: const Text('图片'),
        content: Image.file(File(imageUri.path)),
        actions: [
          ElevatedButton(
            child: const Text('确定'),
            onPressed: () {
              Navigator.of(context).pop();
            },
          ),
        ],
      ),
    );
  },