Question

我正在开发一个java swing中的聊天应用程序，我想在其中添加表情符号，有人可以帮我这个吗？

Answer 1

这是我很久以前在网上发现的一些简单代码。我真的不喜欢那是使用插入符听众。您应该使用DocumentListener或DocumentFilter。但它会让您了解如何使用自定义图标来表示笑脸。

import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;

public class Smiley
    extends JFrame {
    //autoreplacing :) with picture
    JTextPane p = new JTextPane();
    public Smiley() throws Exception {
        p.setEditorKit(new StyledEditorKit());
        getContentPane().add(p, BorderLayout.CENTER);
        SimpleAttributeSet attrs = new SimpleAttributeSet();
        StyleConstants.setIcon(attrs, getImage());
        p.addCaretListener(new CaretListener() {
            public void caretUpdate(CaretEvent e) {
                SwingUtilities.invokeLater(new Runnable() {
                    public void run() {
                        try {
                            StyledDocument doc = (StyledDocument) p.getDocument();
                            String text = doc.getText(0, p.getDocument().getLength());
                            int index = text.indexOf(":)");
                            int start = 0;
                            while (index > -1) {
                                Element el = doc.getCharacterElement(index);
                                if (StyleConstants.getIcon(el.getAttributes()) == null) {
                                    doc.remove(index, 2);
                                    SimpleAttributeSet attrs = new SimpleAttributeSet();
                                    StyleConstants.setIcon(attrs, getImage());
                                    doc.insertString(index, ":)", attrs);
                                }
                                start = index + 2;
                                index = text.indexOf(":)", start);
                            }
                        }
                        catch (Exception ex) {
                            ex.printStackTrace();
                        }
                    }
                });
            }
        });
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(400, 400);
    }

    public static void main(String[] args) throws Exception {
        Smiley test11 = new Smiley();
        test11.show();
    }

    protected ImageIcon getImage() {
        BufferedImage bi = new BufferedImage(15, 15, BufferedImage.TYPE_INT_ARGB);
        Graphics g = bi.getGraphics();
        g.setColor(Color.red);
        g.drawOval(0, 0, 14, 14);
        g.drawLine(4, 9, 9, 9);
        g.drawOval(4, 4, 1, 1);
        g.drawOval(10, 4, 1, 1);
        return new ImageIcon(bi);
    }
}

Answer 2

http://java-sl.com/tip_autoreplace_smiles.html

Answer 3

您可以复制这些Unicode字符并使用它们：☺☻

在Java字符串中，这些字符串将为"\u263a"和"\u263b"。

Answer 4

package com.bulletapp.dragontest;

import javax.swing.*;
import java.awt.*;
import java.util.*;

public class Smiley extends JApplet
{
    public static final int FACE_DIAMETER = 200;
    public static final int X_FACE = 100;
    public static final int Y_FACE = 50;

    public static final int EYE_WIDTH = 10;
    public static final int EYE_HEIGHT = 20;
    public static final int X_RIGHT_EYE = 155;
    public static final int Y_RIGHT_EYE = 95;
    public static final int X_LEFT_EYE = 230;
    public static final int Y_LEFT_EYE = Y_RIGHT_EYE;

    public static final int Y_NOSE = 135;

    public static final int MOUTH_WIDTH = 100;
    public static final int MOUTH_HEIGHT = 50;
    public static final int X_MOUTH = 150;
    public static final int Y_MOUTH = 175;
    public static final int MOUTH_DEGREES_SHOWN = 180;

    public int noseDiameter = 10;         // initial value of the nose's diameter
    public int xNose = 195;               // initial value of the nose's x-position
    public int mouthStartAngle = 180;     // initial start angle of the mouth's arc
    public Color eyeColor = Color.BLACK;  // initial eye color

    public void paint(Graphics graphics)
    {
        // Draw face circle:
        graphics.setColor(Color.YELLOW);
        graphics.fillOval(X_FACE, Y_FACE, FACE_DIAMETER, FACE_DIAMETER);
        graphics.setColor(Color.BLACK);
        graphics.drawOval(X_FACE, Y_FACE, FACE_DIAMETER, FACE_DIAMETER);

        // Draw eyes:
        graphics.setColor(eyeColor);
        graphics.fillOval(X_RIGHT_EYE, Y_RIGHT_EYE, EYE_WIDTH, EYE_HEIGHT);
        graphics.fillOval(X_LEFT_EYE, Y_LEFT_EYE, EYE_WIDTH, EYE_HEIGHT);

        // Draw nose:
        graphics.setColor(Color.BLACK);
        graphics.fillOval(xNose, Y_NOSE, noseDiameter, noseDiameter);

        // Draw mouth:
        graphics.setColor(Color.RED);
        graphics.drawArc(X_MOUTH, Y_MOUTH, MOUTH_WIDTH, MOUTH_HEIGHT,
            mouthStartAngle, MOUTH_DEGREES_SHOWN);
    }

    public void modifyFace()
    {
        String inputString;
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Which would you like to change?\nMOUTH, NOSE, or EYES");
        inputString = keyboard.nextLine();

        // your code goes here, you do not have to modify any code before this point

        // you do not have to modify code after this point
    }

    public static void addAppletToFrame(JApplet applet)
    {
        JFrame frame = new JFrame("Smiley!");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(applet);
        frame.setSize(400, 400);
        applet.init();
        applet.start();
        frame.setVisible(true);
    }

    public static void main(String[] args)
    {
        Smiley smiley = new Smiley();
        smiley.modifyFace();

        addAppletToFrame(smiley);
    }
}

Answer 5

import java.awt.*;
public class SmileyFace {

   public static void main(String[] args){


        Frame f = new Frame("Smile Face");
        f.setSize(500, 500);
        f.setVisible(true);

        Graphics g;
        g = f.getGraphics();


        while (true)
        {
            g.setColor(Color.black);
            g.drawOval(100, 100, 100, 100);
            g.setColor(Color.blue);
            g.fillOval(120, 130, 20, 20);
            g.fillOval(160, 130, 20, 20);
            g.setColor(Color.blue);
            g.setColor(Color.red);
            g.drawLine(130, 170, 135, 175);
            g.drawLine(135, 175, 163, 175);
            g.drawLine(163, 175, 168, 170);
            g.setColor(Color.green);
            g.drawString("Hello", 210, 190);



        }


    }
}

如何在java swing中添加表情符号？

5 个答案: