当我创建我的GUI时,我使用cardlayout来保存我的不同面板,因为我相信很多人都知道.这会将我的屏幕设置为我最大面板的宽度和高度.这会导致我的第一个屏幕的美观问题,这个屏幕比SudokuPanel和CalkuroPanel小得多.

当我换到更大的屏幕时,我尝试设置首选大小,但无济于事.

任何帮助链接到良好的信息或任何通常只会帮助的人将非常感激:).

请在下面找到我的主要课程(我在哪里画GUI)：

import java.awt.*; import javax.swing.*; import java.util.*;

public class puzzleGUI{
  private static JPanel screens;
  public static String username;
  static public void main (String[] args){
  JFrame puzzle = new JFrame ("Sudoku/Calkuro Pro");

  ...

  PuzzleStartPanel startPanel = new PuzzleStartPanel();
  PuzzleChoosePanel choosePanel = new PuzzleChoosePanel();
  PuzzleSudokuPanel sudokuPanel = new PuzzleSudokuPanel(); 
  PuzzleCalkuroPanel calkuroPanel = new PuzzleCalkuroPanel();

  screens = new JPanel(new CardLayout()); 
  screens.add(startPanel,"start");
  screens.add(choosePanel,"choosePuzzle");
  screens.add(sudokuPanel,"sudoku");
  screens.add(calkuroPanel,"calkuro");
  screens.setPreferredSize (new Dimension(250,80));

  puzzle.setJMenuBar(menuBar);
  puzzle.getContentPane().add(screens);
  puzzle.pack();
  puzzle.setVisible(true);
  puzzle.setResizable(false);
  puzzle.setDefaultCloSEOperation (JFrame.EXIT_ON_CLOSE);
}

static public void getUsername(String str){
  username = str;
}

static public void openWindow(String newFrame){
  CardLayout cl = (CardLayout)(screens.getLayout());
  cl.show(screens,newFrame);
}
}

编辑

在调用openWindow时重置首选大小后,brainblast试图打包框架,并且wolah,新框架大小：D

static public void openWindow(String newFrame,int a,int b){
  CardLayout cl = (CardLayout)(screens.getLayout());
  cl.show(screens,newFrame);
  screens.setPreferredSize (new Dimension(a,b));
  puzzle.pack();
}