display series of images with next button

Question

How can I display a series of images one by one every time the user clicks the next button? I have few images stored in array. I used button next to go from image to image. How to programme the button? I used action listener but I just don't know how to get back to the array.

Answer 1

I know I'm being lazy here by not writing the entire code, but here goes anyway.

class whatEver implements ActionListener{
                                                JButton btnNext = new JButton();
                                                static int fileNumber = 0;
                                                static int totalFiles;

                                               void functionLoadInterface ()  //Function with
                                                {
                                                    btnNext.addActionListener(this); 
                                                    //Initialize array ImageArray with file paths.
                                                }

                                               public void cycleImage()
                                                { 
                                                     String file = ImageArray[fileNumber%totalFiles];
                                                     //Code to load the image wherever follows
                                                } 

                                               public void actionPerformed(ActionEvent e) 
                                                {
                                                     filenumber++;
                                                     this.cycleImage();
                                                }

Answer 2

Thanks for the help. But I have another problem. I dont know how to displayed it on JPanel. Here is the segment of the code.

public class mainFrame extends JFrame implements ActionListener{

private JButton answer1 = new JButton; private JButton answer2 = new JButton; private JButton answer3 = new JButton; private JButton answer4 = new JButton; private JButton answer5 = new JButton; private JButton answer6 = new JButton;

JPanel panel;

int fileNumber = 0; int totalFiles;

String[] a = {"image1.txt", "image2.txt",image3.txt",image4.txt" }; List files = Arrays.asList(a);

//CONSTRUCT THE FRAME public mainFrame(){

Collections.shuffle(files); ...... GridBagLayout m = new GridBagLayout(); Container c = (Container)getContentPane(); c.setLayout (m); GridBagConstraints con;

panel = new JPanel(); panel.setPreferredSize(new Dimension(600,600)); panel.setBackground(Color.white); con = new GridBagConstraints(); con.gridy = 2; con.gridx = 0; con.gridwidth = 50; con.gridheight = 10; con.fill = GridBagConstraints.BOTH; m.setConstraints(panel, con); c.add(panel);

//Button con = new GridBagConstraints(); con.anchor=GridBagConstraints.EAST; con.gridy = 3; con.gridx = 50; con.insets= new Insets(0,10,3,0); m.setConstraints(answer1, con); c.add(answer1); answer1.addActionListener(this); .............

functionLoadInterface();

setSize(new Dimension(780,700)); setVisible(true); }

public void functionLoadInterface () { answer1.addActionListener(this); answer2.addActionListener(this); answer3.addActionListener(this); answer4.addActionListener(this); answer5.addActionListener(this); answer6.addActionListener(this);

panel.add () -------------> I dont know what method to put on the bracket so that the drawing will be displayed on the JPanel }

public void actionPerformed(ActionEvent e) { fileNumber++; this.readInputFile(files, totalFiles); }

// Code working fine public void readInputFile(List files, int totalFiles) {} public void paintComponent(Graphics g) { }

}