Question

如何将JFrame设置为屏幕上的特定位置？我已经设法修复它的大小。我希望它位于屏幕上的标准位置，而不是由用户移动。

Answer 1

您可以按如下方式修改它：

frame.setResizable(false);
frame.setUndecorated(true);

或者更好：通过添加一个Component侦听器：

frame.addComponentListener( new ComponentListener() {
      public void componentResized( ComponentEvent e ) {}
      public void componentMoved( ComponentEvent e ) {
         setLocation( FIX_X, FIX_Y );
      }
      public void componentShown( ComponentEvent e ) {}
      public void componentHidden( ComponentEvent e ) {}
 } );

Answer 2

如果您想在屏幕中心设置位置：

private void centerLocation() throws HeadlessException {
    final Toolkit toolkit = Toolkit.getDefaultToolkit();
    final Dimension screenSize = toolkit.getScreenSize();
    final int x = (screenSize.width - this.getWidth()) / 2;
    final int y = (screenSize.height - this.getHeight()) / 2;
    this.setLocation(x, y);
}

不能被用户移动：

setUndecorated(true);

编辑：

public static final int TOP_LEFT = 0;
public static final int TOP_RIGHT = 1;
public static final int BOTTOM_LEFT = 2;
public static final int BOTTOM_RIGHT = 3;

public void customLocation(int mode) {
    final Toolkit toolkit = Toolkit.getDefaultToolkit();
    final Dimension screenSize = toolkit.getScreenSize();
    int x = 0, y = 0;
    switch (mode) {
        case TOP_LEFT:
            x = 50;
            y = 30;
            break;
        case TOP_RIGHT:
            x = (screenSize.width - this.getWidth()) - 50;
            y = 30;
            break;
        case BOTTOM_LEFT:
            x = 50;
            y = (screenSize.height - this.getHeight()) - 80;
            break;
        case BOTTOM_RIGHT:
            x = (screenSize.width - this.getWidth()) - 50;
            y = (screenSize.height - this.getHeight()) - 80;
            break;
        default:
            break;
    }
    this.setLocation(x, y);
}

并且即使您的框架是否装饰，您也可以移动框架：

Point initialClick;

addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
    public void mouseDragged(java.awt.event.MouseEvent evt) {
        MouseDragged(evt);
    }
});
addMouseListener(new java.awt.event.MouseAdapter() {
    public void mousePressed(java.awt.event.MouseEvent evt) {
        MousePressed(evt);
    }
});

private void MousePressed(java.awt.event.MouseEvent evt) {
    initialClick = evt.getPoint();
}

private void MouseDragged(java.awt.event.MouseEvent evt) {
    updateLocation(evt);
}

private void updateLocation(MouseEvent evt) {
    int thisX = this.getLocation().x;
    int thisY = this.getLocation().y;
    int xMoved = (thisX + evt.getX()) - (thisX + initialClick.x);
    int yMoved = (thisY + evt.getY()) - (thisY + initialClick.y);
    int x = thisX + xMoved;
    int y = thisY + yMoved;
    this.setLocation(x, y);
}

如何将JFrame修复到特定位置？

2 个答案: