const Tooltip({ super.key, this.message, this.richMessage, this.height, this.padding, this.margin, this.verticalOffset, this.preferBelow, this.excludeFromSemantics, this.decoration, this.textStyle, this.textAlign, this.waitDuration, this.showDuration, this.triggerMode, this.enableFeedback, this.onTriggered, this.child, }) 注意:是在所child控件上长按才显示message
Tooltip( message: '点击进行用户名和密码认证,完成系统登录', child: ElevatedButton( onPressed: () { _login(); }, child: const Text('Login'), ), ),
标签:ElevatedButton,控件,const,Tooltip,child,message From: https://www.cnblogs.com/hztech/p/17564990.html