小编Yog*_*noy的帖子

我是新手，想在按下按钮后显示文本小部件。

   import 'package:flutter/material.dart';

    class dellecturer extends StatefulWidget {
      @override
      _dellecturerState createState() => _dellecturerState();
    }

    class _dellecturerState extends State<dellecturer> {
      @override
      Widget build(BuildContext context) {
        return Card(
          color: Colors.grey.shade300,
          margin: EdgeInsets.all(10.0),
        child: Container(
          margin: EdgeInsets.all(20),
          child: ListView(
            children: <Widget>[
             new Container(
               margin: EdgeInsets.only(top:13,bottom: 25),
               alignment: Alignment.topCenter,
                 child:Text("DELETE BY LECTURER ID",style: TextStyle(color: Colors.redAccent,fontWeight: FontWeight.bold,fontSize: 20.0),),
             ),
             new TextField(
                decoration:InputDecoration(border: OutlineInputBorder(borderSide: BorderSide(style: BorderStyle.solid),),labelText: "LECTURER ID",hintText: "Enter lecturer ID",prefixIcon: Icon(Icons.person)),
              ),
              Padding(padding: EdgeInsets.only(top:20),),
             new RaisedButton(child: Text("OK",style: TextStyle(fontWeight: FontWeight.bold,color: Colors.white,fontSize: 15),),color: Colors.red,onPressed: (){Form(child: Search());},),//onclick search …