CODEWITHSUNDEEP
javaswingjscrollpane
cristian franco
cristian franco

Reputation: 265

jPanels in jScrollPane does not work

Hi i want insert panels in jScrollPane like list horizontal, but the panels does not respect the bounds than i set, this is my code

public PrincipalPanel() {
        initComponents();
        for(int i=0;i<3;i++){
            addItem(new ItemCurso(),i);
        }
    }

    public void addItem(ItemCurso item,int index){
        item.setVisible(true);
        item.setBounds(400*index, 0, 400, 300);
        jScrollPane1.getViewport().add(item,null);
    }

ItemCurso extends from jPanel, the last ItemCurso that i set gets the size of the jScrollpane and the scroll does not work

the code of ItemCurso is the next:

public class ItemCurso extends javax.swing.JPanel {

    public ItemCurso() {
        initComponents();
    }


    @SuppressWarnings("unchecked")
    private void initComponents() {

 jLabel1 = new javax.swing.JLabel();


 jPanel1 = new javax.swing.JPanel();
    nombreTxt = new javax.swing.JLabel();
    escuelaTxt = new javax.swing.JLabel();
    bimestresComboBox = new javax.swing.JComboBox();
    jButton1 = new javax.swing.JButton();
    jButton2 = new javax.swing.JButton();
    jButton3 = new javax.swing.JButton();
    jButton4 = new javax.swing.JButton();
    jButton5 = new javax.swing.JButton();
    jButton6 = new javax.swing.JButton();
    jButton7 = new javax.swing.JButton();

jLabel1.setText("jLabel1");

setBackground(new java.awt.Color(229, 232, 221));
setPreferredSize(new java.awt.Dimension(100, 100));

jPanel1.setBackground(new java.awt.Color(255, 255, 255));

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGap(0, 100, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGap(0, 100, Short.MAX_VALUE)
);

nombreTxt.setText("Nombre");

escuelaTxt.setText("Escuela");

bimestresComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));

jButton1.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 14.png")); // NOI18N

jButton2.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 28.png")); // NOI18N

jButton3.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 27.png")); // NOI18N

jButton4.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 29.png")); // NOI18N

jButton5.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 30.png")); // NOI18N

jButton6.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 31.png")); // NOI18N

jButton7.setIcon(new javax.swing.ImageIcon("C:\\Users\\Cristian_Franco\\Documents\\Sithec\\Proyectos\\Proyecto Escuelas\\SITCEA\\mavenproject1\\Images\\Resources\\Recurso 32.png")); // NOI18N

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
        .addContainerGap()
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(bimestresComboBox, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 15, Short.MAX_VALUE)
                        .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(18, 18, 18)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(nombreTxt)
                                    .addComponent(escuelaTxt)))
                            .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(0, 0, Short.MAX_VALUE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(0, 0, Short.MAX_VALUE)))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(0, 0, Short.MAX_VALUE)
                        .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton6, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(0, 0, Short.MAX_VALUE)))))
        .addContainerGap())
);
layout.setVerticalGroup(
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    .addGroup(layout.createSequentialGroup()
        .addContainerGap()
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(nombreTxt)
                .addGap(18, 18, 18)
                .addComponent(escuelaTxt))
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
        .addGap(18, 18, 18)
        .addComponent(bimestresComboBox, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
        .addGap(18, 18, 18)
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
            .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
        .addGap(18, 18, 18)
        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
            .addComponent(jButton5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
            .addComponent(jButton6, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE))
        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 26, Short.MAX_VALUE)
        .addComponent(jButton7, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE))
);        

}// </editor-fold>   




    // Variables declaration - do not modify                     
    private javax.swing.JComboBox bimestresComboBox;
    private javax.swing.JLabel escuelaTxt;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JLabel nombreTxt;
    // End of variables declaration                   
}

Upvotes: 0

Views: 47

Answers (1)

camickr
camickr

Reputation: 324118

jScrollPane1.getViewport().add(item,null);

You can't add 3 "items" to the viewport. You can only add a single component to the viewport.

So your logic should be something like this:

JPanel panel = new JPanel( ); // specify your layout manager here

for(int i=0;i<3;i++)
{
    panel.add( new ItemCurso() );
}

jScrollPane1.getViewport().add(panel);

By default a JPanel uses a FlowLayout so all the components will be displayed horizontally on the same line.

You will need to implement the getPreferredSize() method in your ItemCurso class to make sure it returns the Dimension (400, 300). Don't attempt to use setBounds(...).

Upvotes: 2

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