注:我正在使用jFugue。鋼琴鍵 - 不重疊,現在不顯示
public class Piano extends JFrame implements KeyListener {
ArrayList<Keys> keys = new ArrayList<Keys>();
Player playNote = new Player();
public Piano() {
drawGrid();
this.addKeyListener(this);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
}
public void drawGrid() {
pane = new JLayeredPane();
this.setLayout(null);
keys.add(new Key(new Rectangle(0, 0, 50, 300), new Pattern("V0 I[Piano] C5q"), Color.white));
keys.add(new Key(new Rectangle(25, 0, 25, 180), new Pattern("V0 I[Piano] C#5q"), Color.white));
keys.add(new Key(new Rectangle(50, 0, 50, 300), new Pattern("V0 I[Piano] D5q"), Color.white));
keys.add(new Key(new Rectangle(75, 0, 25, 180), new Pattern("V0 I[Piano] D#5q"), Color.white));
keys.add(new Key(new Rectangle(100, 0, 50, 300), new Pattern("V0 I[Piano] E5q"), Color.white));
keys.add(new Key(new Rectangle(150, 0, 50, 300), new Pattern("V0 I[Piano] F5q"), Color.white));
keys.add(new Key(new Rectangle(175, 0, 25, 180), new Pattern("V0 I[Piano] F#5q"), Color.white));
keys.add(new Key(new Rectangle(200, 0, 50, 300), new Pattern("V0 I[Piano] G5q"), Color.white));
keys.add(new Key(new Rectangle(225, 0, 25, 180), new Pattern("V0 I[Piano] G#5q"), Color.white));
keys.add(new Key(new Rectangle(250, 0, 50, 300), new Pattern("V0 I[Piano] A5q"), Color.white));
keys.add(new Key(new Rectangle(275, 0, 25, 180), new Pattern("V0 I[Piano] A#5q"), Color.white));
keys.add(new Key(new Rectangle(300, 0, 50, 300), new Pattern("V0 I[Piano] B5q"), Color.white));
this.add(keys.get(0));
for (Key w: keys) {
w.setBounds(w.getRectangle());
this.getContentPane().add(w);
w.addMouseListener(w);
w.setPlayer(playNote);
}
}
public static void main(String[] args) {
Piano yamaha = new Piano();
yamaha.setSize(1000, 500);
}
}
這裏的關鍵是類的一部分:
public class Key extends JLayeredPane implements MouseListener {
Player player;
Rectangle rectangle;
Pattern pattern;
Color color;
public Key(Rectangle r, Pattern p, Color c) {
rectangle = r;
pattern = p;
color = c;
}
public void paintComponent(Graphics g) {
g.setColor(color);
g.fillRect((int) rectangle.getX() - 1, (int) rectangle.getY() - 1, (int) rectangle.getWidth() - 1, (int) rectangle.getHeight() - 1);
g.setColor(Color.BLACK);
g.drawRect((int) rectangle.getX(), (int) rectangle.getY(), (int) rectangle.getWidth() - 1, (int) rectangle.getHeight() - 1);
repaint();
}
public Rectangle getRectangle() {
return rectangle;
}
public void setRectangle(Rectangle rectangle) {
this.rectangle = rectangle;
}
}
第一個白鍵會在框架上顯示,但沒有其他人做。我試過JLayeredPane,OverlayLayout,GridLayout等等。
任何人都可以給我一些幫助嗎?
我已經編輯好後,已經刪除了不相關的信息,並添加了吊牌。請注意,您不應該使用JLayeredPane來表示每個密鑰,因爲這是反向工作。請考慮使用One一個JLayeredPane並向其添加組件。也不要重寫JLayerdPane的paintComponent。此外,如果您曾在其他組件中重寫paintComponent,則始終調用super的方法,並且從不**從其中調用repaint()。閱讀Swing教程,因爲它們不會導致你錯誤。 –