How can i refresh a JDialog Image Correctly?

Question

i am coding a program using SWing in java, but this is my problem, when i press a button, I want that every time I press a button, I update a new image in the same position as the previous one, I try to do it in the action listener of the code, but the image is not updated and the one that was At the beginning, can someone help me in this? Thank you very much.

public MainWindow() {
    initComponents();
    setIconImage(Icono);
    this.setLocationRelativeTo(null);
    this.setResizable(false);
    Imagen fondo=new Imagen();
    this.add(fondo, BorderLayout.CENTER);
    this.pack();
    PracticeMode = new javax.swing.JDialog();
}

private void StartPracticeActionPerformed(java.awt.event.ActionEvent evt) {                                              
    ButtonsSelected(1);
    StartGame Practice=new StartGame(OpcComboBox, numUnity, numTrys, 
    opcNotas, false);
    PracticeBF.dispose();
    PracticeMode.setIconImage(Icono);
    PracticeMode.setBounds(460, 600, 460, 538);
    PracticeMode.setVisible(true);
    CirculodeQuintasBW BW=new CirculodeQuintasBW();
    PracticeMode.add(BW, BorderLayout.CENTER);
    PracticeMode.pack();
    PracticeMode.setLocationRelativeTo(null);
    PracticeMode.setResizable(false);
}

This is the Image that i want to refresh, it supossed to be another Image before of that, but each time i tried to refresh it doesnt work... PracticeMode it supossed to be a JDialog, anybody can help me?.

private void D2ActionPerformed(java.awt.event.ActionEvent evt) {                                   
    CirculodeQuintasD D=new CirculodeQuintasD();
    PracticeMode.add(D, BorderLayout.CENTER);
    PracticeMode.validate();
    PracticeMode.repaint();
    PracticeMode.pack();
}

camickr · Accepted Answer · 2018-04-29T01:26:22.083

1

First of all variable names and method names should NOT start with an upper case character. Learn by example from reading your text book or tutorial and then follow the Java conventions and don't make up your own!

when i press a button, I want that every time I press a button, I update a new image in the same position as the previous one,

Add an JLabel containing an ImageIcon to your panel.

When you want to change the image you just use:

label.setIcon( new ImageIcon(...) );

For example read the section from the Swing tutorial on How to Use Combo Boxes. It does exactly what your want. It uses an ActionListener to change the image of a label. The only different is that the ActionEvent is generated by clicking on an item in the combobox instead of clicking on a button.

edited Apr 29 '18 at 01:26

answered Apr 29 '18 at 01:21

camickr

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Thanks for the response, can you give me a more especific answer about how can i do that?, thank you man. – Luis Enrique Bermúdez García Apr 29 '18 at 01:24
2

It is a specific answer. What do you find so confusing about invoking the `setIcon(...)` statement in the ActionListener of your code? In any case, I was in the process of adding a link to demo code. Have you read the tutorial link that I provided? Did you download the demo code and try it? – camickr Apr 29 '18 at 01:27
I am sorry if this is a noob confusion (hahah), i am using a Jdialog for the window that contain the image, so i think i cant use the setIcon method, did i?. – Luis Enrique Bermúdez García Apr 29 '18 at 01:45
2

Why can't you add a JLabel to a JDialog? – camickr Apr 29 '18 at 01:54
Thank you!, i resolved this task from the link that you send me, i was so confused with the terminology in Java cause i´m a new programmer using swing. Thank you again. – Luis Enrique Bermúdez García May 06 '18 at 16:02
@LuisEnriqueBermúdezGarcía, `i resolved this task from the link that you send me,` - that is why I provided the link. The tutorial covers most of the Swing basics. A good place to start as a new Swing programmer to learn the basics. – camickr May 06 '18 at 17:41

How can i refresh a JDialog Image Correctly?

1 Answers1