[英]How to change button properties using UIManager
目前正在為使用 Java 的郵件 API 編程的電子郵件客戶端進行項目。 我在嘗試使用UIManager
更改 Swing 中的某些屬性時遇到問題。
對於 JOptionPane 的特定部分,它目前看起來像這樣:
您可以看到按鈕顏色沒有隨着當前代碼的變化而改變:
protected static Credentials credentialHandler() {
String EMAIL = null;
String PASSWORD = null;
UIManager.put("OptionPane.background",new ColorUIResource(32, 38, 44));
UIManager.put("OptionPane.foreground",Color.WHITE);
UIManager.put("Panel.background",new ColorUIResource(32, 38, 44));
UIManager.put("TextField.background",new ColorUIResource(62, 68, 74));
UIManager.put("TextField.foreground",Color.WHITE);
UIManager.put("Label.foreground",Color.WHITE);
UIManager.put("PasswordField.foreground",Color.WHITE);
UIManager.put("Button.background",new ColorUIResource(62, 68, 74));
JPanel panel = new JPanel();
JLabel labelEmail = new JLabel("Enter an email:");
labelEmail.setForeground(Color.WHITE);
JTextField email = new JTextField(32);
email.setBackground(new Color(32, 38, 44));
JLabel labelPass = new JLabel("Enter a password:");
JPasswordField pass = new JPasswordField(16);
pass.setBackground(new Color(32, 38, 44));
panel.add(labelEmail);
panel.add(email);
panel.add(labelPass);
panel.add(pass);
String[] options1 = new String[]{"Login", "Cancel"};
int option1 = JOptionPane.showOptionDialog(null, panel, "Credentials",
JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE,
null, options1, options1[1]);
if (option1 == 0) {
EMAIL = email.getText();
char[] passwordChar = pass.getPassword();
PASSWORD = new String(passwordChar);
} else {
JOptionPane.showMessageDialog(null, "Looks like you exited the program. If you think this is a mistake, please report it to the developer!");
System.exit(2);
}
return new Credentials(EMAIL, PASSWORD);
}
我想更改按鈕的背景顏色和字體顏色(假設它與前景有關)。
將new ColorUIResource(62, 68, 74)
替換為new java.awt.Color(62, 68, 74)
。
/* Add following "import":
* import java.awt.Color;
*/
UIManager.put("Button.background", new Color(62, 68, 74));
要設置字體顏色,請使用以下內容(將JButton
文本顏色設置為白色):
UIManager.put("Button.foreground", Color.white);
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