我想知道如何在代码中调整'alarmClockButton'的大小,我试过setSize();和setPreferredSize();但是他们都不起作用。我为此使用了GridBagLayout。有任何想法吗?调整JButton的大小
public class MainMenu {
// JFrame = the actual menu/frame.
private JFrame frame;
// JLabel = provides text instructions or information on a GUI —
// display a single line of read-only text, an image or both text and an image.
private JLabel background, logo;
// JButton = button.
private JButton alarmClockButton;
// Constructor to create menu
public MainMenu() {
frame = new JFrame("Alarm Clock");
alarmClockButton = new JButton("Timer");
alarmClockButton.setPreferredSize(new Dimension(1000, 1000));
// Add an event to clicking the button.
alarmClockButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// TODO: CHANGE TO SOMETHING NICER
JOptionPane.showMessageDialog(null, "This feature hasn't been implemented yet.", "We're sorry!",
JOptionPane.ERROR_MESSAGE);
}
});
// Creating the background
try {
background = new JLabel(new ImageIcon(ImageIO.read(getClass()
.getResourceAsStream("/me/devy/alarm/clock/resources/background.jpg"))));
logo = new JLabel(new ImageIcon(ImageIO.read(getClass()
.getResourceAsStream("/me/devy/alarm/clock/resources/logo.png"))));
} catch (IOException e) {
e.printStackTrace();
}
background.setLayout(new GridBagLayout());
frame.setContentPane(background);
GridBagConstraints gbc = new GridBagConstraints();
// Inset = spacing between each component
gbc.insets = new Insets(15,15, 15, 15);
// Positioning
gbc.gridx = 0;
gbc.gridy = 0;
frame.add(logo, gbc);
// Positioning
// Keep x the same = aligned. On same x-coordinate (think math!)
gbc.gridx = 0;
// Y = 2 down
gbc.gridy = 1;
frame.add(alarmClockButton, gbc);
frame.setVisible(true);
frame.setSize(550, 200);
frame.setResizable(false);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
alarmClockButton.setForeground(Color.RED);
}
}
谢谢!
“不起作用”是什么意思?你究竟想达到什么目的?你究竟得到了什么?更有针对性的说明会有很大的帮助。 –
最好使用不同大小的字体或不同长度的文字,改变图标的大小或更改页边距来调整大小。 –