Day_17GUI编程

GUI编程

组件

• 窗口
• 弹窗
• 面板
• 文本框
• 列表框
• 按钮
• 图片
• 监听事件
• 鼠标
• 键盘事件
• 破解工具

1、简介

Gui的核心技术：Swing AWT

1.因为界面不美观

2.需要jre环境

2、AWT

2.1Awt介绍

1. 包含很多类和接口！GUI！
2. 元素：窗口，按钮，文本框
3. java.awt
   

2.2、组件与容器

package com.kuang.lesson01;

import java.awt.*;

public class TestFrame {
    public static void main(String[] args) {
        //Frame,JDK,看源码
        Frame frame = new Frame ("我的第一个java图像界面窗口" );
        //需要设置可见性 w h
        frame.setVisible (true);

        //设置窗口大小
        frame.setSize (400,400);

        //设置背景颜色 color
        frame.setBackground (new Color (74, 142, 79));

        //弹出初始位置
        frame.setLocation (200,200);

        //设置大小固定
        frame.setResizable (false);

    }
}

尝试回顾封装

package com.kuang.lesson01;

import java.awt.*;

public class TestFrame2 {
    public static void main(String[] args) {
        //展示多个窗口 new
        Myframe myframe1=new Myframe (100,100,200,200,Color.blue);
        Myframe myfram2=new Myframe (300,100,200,200,Color.yellow);
        Myframe myframe3=new Myframe (100,300,200,200,Color.red);
        Myframe myframe4=new Myframe (300,300,200,200,Color.pink);


    }
}
class Myframe extends Frame{
    static  int id=0;//可能存在多个窗口 我们需要一个计数器
    public Myframe(int x,int y,int w,int h,Color color){
        super("MyFrame+"+(++id));
        setBackground (color);
        setBounds (x,y,w,h);
        setVisible (true);
    }
}

解决面板关闭事件

package com.kuang.lesson01;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

//panel可以看成是一个空间，但是不能单独存在
public class TestPanel {
    public static void main(String[] args) {
        Frame frame =new Frame ();
        //布局的概念
        Panel panel=new Panel ();

        //设置布局
        frame.setLayout (null);
        //坐标
        frame.setBounds (300,300,500,500);
        frame.setBackground (new Color (121, 97, 50));

        //panel设置坐标，相当于frame
        panel.setBounds (50,50,400,400);
        panel.setBackground (new Color (50, 95,123));
        //frame.add(panel)
        frame.add (panel);
        frame.setVisible (true);
        //监听事件，监听窗口关闭事件 System.exit(0)
        //适配器模式：
        frame.addWindowListener (new WindowAdapter () {
            @Override
            public void windowClosing(WindowEvent e) {
                //结束程序
                System.exit (0);
            }
        });
    }

}

3、布局管理器

• 流式布局

  package com.kuang.lesson01;
  
  import java.awt.*;
  
  public class TestFlowLayout {
      public static void main(String[] args) {
          Frame frame=new Frame ();
          //组件-按钮
          Button button1=new Button ("button1");
          Button button2=new Button ("button2");
          Button button3=new Button ("button3");
  
          //设置为流式布局
          //frame.setLayout (new FlowLayout ());
          frame.setLayout (new FlowLayout (FlowLayout.LEFT));
  
          frame.setSize (200,200);
  
          //把按钮添加上去
          frame.add (button1);
          frame.add (button2);
          frame.add (button3);
  
          frame.setVisible (true);
  
      }
  }
  

• 东西南北中

  package com.kuang.lesson01;
  
  import java.awt.*;
  
  public class TestBorderLaout {
      public static void main(String[] args) {
          Frame frame =new Frame ("TestBorderLayout");
  
          Button east=new Button ("East");
          Button west=new Button ("West");
          Button south =new Button ("South");
          Button north=new Button ("North");
          Button center =new Button ("Center");
  
          frame.add (east,BorderLayout.EAST);
          frame.add (west,BorderLayout.WEST);
          frame.add (south,BorderLayout.SOUTH);
          frame.add (north,BorderLayout.NORTH);
          frame.add (center,BorderLayout.CENTER);
  
          frame.setSize (200,200);
          frame.setVisible (true);
      }
  
  }
  

• 表格布局

• package com.kuang.lesson01;
  
  import java.awt.*;
  
  public class TestGridLayout {
      public static void main(String[] args) {
  
  
          Frame frame =new Frame ("TestGridLayout");
  
          Button btn1=new Button ("btn1");
          Button btn2=new Button ("btn2");
          Button btn3 =new Button ("btn3");
          Button btn4=new Button ("btn4");
          Button btn5 =new Button ("btn5");
          Button btn6 =new Button ("btn6");
          frame.setLayout (new GridLayout (3,2));
          frame.add (btn1);
          frame.add (btn2);
          frame.add (btn3);
          frame.add (btn4);
          frame.add (btn5);
          frame.add (btn6);
          frame.pack ();//java函数，自动布局
          frame.setVisible (true);
  
      }
  }
  

package com.kuang.lesson01;

import javafx.geometry.Point3D;

import java.awt.*;

public class Test {
    public static void main(String[] args) {
        Frame frame = new Frame ("Test");
        frame.setSize (400, 300);
        frame.setLocation (400,400);
        frame.setBackground (Color.pink);
        frame.setVisible (true);
        frame.setLayout (new GridLayout (2,1));
        //4个面板
        Panel p1=new Panel (new BorderLayout ());
        Panel p2=new Panel (new GridLayout (2,1));
        Panel p3=new Panel (new BorderLayout ());
        Panel p4=new Panel (new GridLayout (2,2));

        p1.add (new Button ("east-1"),BorderLayout.EAST);
        p1.add (new Button ("west-1"),BorderLayout.WEST);
        p2.add (new Button ("center-1"));
        p2.add (new Button ("center-2"));
        p1.add (p2,BorderLayout.CENTER);
        p3.add (new Button ("east-2"),BorderLayout.EAST);
        p3.add (new Button ("west-2"),BorderLayout.WEST);
        p4.add (new Button ("center-3"));
        p4.add (new Button ("center-4"));
        p4.add (new Button ("center-5"));
        p4.add (new Button ("center-6"));
        p3.add (p4,BorderLayout.CENTER);
        frame.add (p1);
        frame.add (p3);
        

    }
}