gridbadlayout垂直間隙

Question

我正在用som按鈕製作面板。

但我希望按鈕彼此接觸，換句話說，我希望垂直差距消失。但按鈕不應調整大小。我該怎麼去做這件事？

我的代碼：

this.setLayout(new GridBagLayout()); 
    GridBagConstraints constraints = new GridBagConstraints(); 

    constraints.fill = GridBagConstraints.HORIZONTAL; 
    constraints.gridwidth = 2; 
    constraints.weightx = 1D; 
    constraints.weighty = 1D; 
    constraints.gridx = 0; 
    constraints.gridy = 0; 
    int row = 0; 
    for (MainAction actie : mainActions) { 
     constraints.gridy = row; 
     row++; 
     SelectedActionButton but = new SelectedActionButton(selectedActionModel, actie); 
     this.add(but, constraints); 

    } 
    constraints.gridwidth = 1; 
    constraints.weightx = 0.5D; 
    row *=2; 
    for (AbstractAction actie : objectActions) { 
     constraints.gridy = row/2; 
     constraints.gridx = row%2; 
     row++; 
     SelectedObjectButton but = new SelectedObjectButton(selectedObjectModel, actie); 
     but.setMargin(new Insets(0, 0, 0, 0)); 
     this.add(but, constraints); 
    } 

在此先感謝

Answer 1

更改以下行

constraints.weighty = 1D; 

到

constraints.weighty = 0D; 

將解決您的問題。

更新：調整所有按鈕北您可以在最後一行添加一個附加組件吃的所有可用空間：

constraints.weighty = 1D; 
constraints.gridy = row; 
this.add(Box.createGlue(), constraints);