JLabel/JPanel定位問題。（GridBagLayout）

對我的JLabel組件的定位存在小問題。JLabel/JPanel定位問題。（GridBagLayout）

代碼：

public class delete { 


    public static void main(String[] args){ 
     GridBagConstraints gbc = new GridBagConstraints(); 

     //Adding the JPanels. Panel for instructions 
     JPanel panel = new JPanel(); 
     panel.setLayout(new GridBagLayout()); 

     //JLabel for the Instructions. 
     JLabel label = new JLabel("<html> Instructions: Type in the grades you’ve received, along with the weights they’ll have in the determination of your overall average. <br> After you press ‘Calculate’, the results will show your average so far. <br> Every grade you enter must be a non-negative number, and every percentage/weight you enter must be a positive number :)</html>"); 
     gbc.gridwidth = 2; 
     gbc.fill = GridBagConstraints.HORIZONTAL; 
     gbc.anchor = GridBagConstraints.PAGE_START; 
     gbc.weighty = 1; 
     panel.add(label, gbc); 


     //JLabel1 for Assingment/Grade/Weight(Percent) 
     JLabel label1 = new JLabel("<html><pre>Assingment\t\t\t\t\tWeight\t\t\t\t\tPercentage</pre></html>"); 
     gbc.gridx = 0; 
     gbc.gridy = 0; 
     panel.add(label1, gbc); 


     //New frame set 
     JFrame frame = new JFrame("Grade Calculator"); 
     frame.setVisible(true); 
     frame.setSize(750,500); 
     frame.setDefaultCloseOperation(EXIT_ON_CLOSE); 
     frame.add(panel); 



    } 


}

現在現在這個位置JLabel（label）在這是我想要的框架的頂部。問題是JLabel（label1）我想label1略低於標籤。

如果我設置gbc.gridy = 0,label1顯示在標籤的頂部使兩個單獨的碰撞在一起。

當我設置gbc.gridy = 1時，label1一直走到框架的底部。

現在我想要label1只是略低於標籤，但我不能使用漂浮與gridy。我怎樣才能解決這個問題？

來源

2015-07-12 bob9123

gbc.weighty = 1;正在爲組件提供所有組件佈置後留下的所有剩餘空間。相反，提供label這一限制的，你應該給label1只

當你不提供旁邊的最後一個組件，因爲沒有其他成分被添加，label一個gridx/gridy到組件，GridBagLayout地方組件放置在頂部，但是您還要提供0的gridx/gridy到label1，它放置在相同的位置。

相反，放置在label和0x0在label10x1

JLabel label = new JLabel("<html> Instructions: Type in the grades you’ve received, along with the weights they’ll have in the determination of your overall average. <br> After you press ‘Calculate’, the results will show your average so far. <br> Every grade you enter must be a non-negative number, and every percentage/weight you enter must be a positive number :)</html>"); 

gbc.gridwidth = 2; 
gbc.fill = GridBagConstraints.HORIZONTAL; 
gbc.gridy = 0; 
panel.add(label, gbc); 

//JLabel1 for Assingment/Grade/Weight(Percent) 
JLabel label1 = new JLabel("<html><pre>Assingment\t\t\t\t\tWeight\t\t\t\t\tPercentage</pre></html>"); 
gbc.gridx = 0; 
gbc.gridy = 1; 
gbc.anchor = GridBagConstraints.NORTH; 
gbc.weighty = 1; 
panel.add(label1, gbc);

您也可以影響該組件將調整到內它是通過使用anchor物業小區的位置。

GridBagLayout

看一看How to Use GridBagLayout的一些細節

不知道「正是」你在做什麼，我可能會建議也有看How to Use Tables

來源

2015-07-13 00:03:41 MadProgrammer

謝謝這非常重要。我一直在問這裏一個問題之前總是使用Java教程，但直到有人在這裏解釋之後，我才能完全理解它。再次感謝。 – bob9123

你好，還有一件事我遇到了問題。你能幫我解答嗎？ – bob9123

@ bob9123我通常會提供指向其他教程，文檔或支持文檔的鏈接，因爲您不應該把我的話當做事情;）。如果你有更多的問題，也許考慮問另一個問題，只需提供一個鏈接回到這個作爲參考點的人誰可能還沒有讀過這個;） – MadProgrammer

//JLabel for the Instructions. 
JLabel label = new JLabel("<html> Instructions: Type in the grades you’ve received, along with the weights they’ll have in the determination of your overall average. <br> After you press ‘Calculate’, the results will show your average so far. <br> Every grade you enter must be a non-negative number, and every percentage/weight you enter must be a positive number :)</html>"); 
gbc.fill = GridBagConstraints.HORIZONTAL; 
gbc.weighty = 1; 
gbc.gridx = 0; 
gbc.gridy = 0; 
panel.add(label, gbc); 


//JLabel1 for Assingment/Grade/Weight(Percent) 
JLabel label1 = new JLabel("<html><pre>Assingment\t\t\t\t\tWeight\t\t\t\t\tPercentage</pre></html>"); 
gbc.gridx = 0; 
gbc.gridy = 1; 
panel.add(label1, gbc);

來源

2015-07-13 10:41:15

JLabel/JPanel定位問題。 （GridBagLayout）

回答

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JLabel/JPanel定位問題。（GridBagLayout）