[英]JFrame Components not showing up
I have a problem that the JFrame is not showing upmy components. 我有一个问题,JFrame没有显示我的组件。 When i opened the GasStationPanel in WindowBuilder it show well, but the MainFrame is show as a blank windows.
当我在WindowBuilder中打开GasStationPanel时,它显示效果很好,但MainFrame显示为空白窗口。 Please, I need you help here.
拜托,我需要你帮忙。 Thanks!
谢谢!
The JFrame code is: JFrame代码是:
public class MainFrame extends JFrame {
private GasStationPanel pnlMainGasStation;
public MainFrame() throws SecurityException, IOException {
try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
SwingUtilities.updateComponentTreeUI(this);
} catch (Exception e) {
e.printStackTrace();
}
getContentPane().setLayout(new BorderLayout());
this.pnlMainGasStation = new GasStationPanel("all cars","pumps","coffee");
this.add(pnlMainGasStation, BorderLayout.CENTER);
setLocationRelativeTo(null);
setTitle("GasStation");
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
Utils.closeApplication(MainFrame.this);
}
});
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = new Dimension();
frameSize.setSize(screenSize.width*0.7, screenSize.height*0.9);
setSize(frameSize);
setVisible(true);
}
public GasStationPanel getMainPanel() {
return pnlMainGasStation;
}
}
The GasStationPanel Code: GasStationPanel代码:
public class GasStationPanel extends JPanel {
private JSplitPane splinterRight, splinterLeft;
private AllCarsPanel allCarsPanel;
private FuelPumpListPanel fuelPumpsListPanel;
private CoffeeHousePanel coffeeHousePanel;
private List<GasStationController> allListeners;
public AllCarsPanel getAllCarsPanel() {
return allCarsPanel;
}
public FuelPumpListPanel getFuelPumpsListPanel() {
return fuelPumpsListPanel;
}
public CoffeeHousePanel getCoffeeHousePanel() {
return coffeeHousePanel;
}
public GasStationPanel(String allCarsStr, String fuelPumpsListStr,
String coffeeHousePanelStr) throws SecurityException, IOException {
// Init Listeners List
this.allListeners = new ArrayList<GasStationController>();
// Layout and size
setLayout(new BorderLayout());
// Build panels
allCarsPanel = new AllCarsPanel();
fuelPumpsListPanel = new FuelPumpListPanel();
coffeeHousePanel = new CoffeeHousePanel();
// Split the screen to three
splinterRight = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
splinterLeft = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
splinterLeft.setLeftComponent(allCarsPanel);
splinterLeft.setRightComponent(fuelPumpsListPanel);
splinterRight.setLeftComponent(splinterLeft);
splinterRight.setRightComponent(coffeeHousePanel);
}
public void registerListener(GasStationController gasStationController) {
this.allListeners.add(gasStationController);
}
In short, you never add any components to your container. 简而言之,您永远不会向容器中添加任何组件。 For example, in your
GasStationPanel
code, perhaps you should try invoking add(Component)
by passing in your JSplitPane
s as an argument. 例如,在您的
GasStationPanel
代码中,您可能应该尝试通过传入JSplitPane
作为参数来调用add(Component)
。 For example: 例如:
add(splinterLeft, BorderLayout.CENTER);
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