JScrollPane scrollPane = new JScrollPane(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollPane.setBounds(23, 11, 603, 123);
contentPane.add(scrollPane);
JPanel panel = new JPanel();
JLabel[] labels=new JLabel[callout.getRedCount()]; //callout.getRedCount() = 8
panel.setLayout(null);
int x = 50;
int y = 50;
for (int i=0;i<callout.getRedCount();i++){ //callout.getRedCount() = 8
labels[i]=new JLabel("Red" + i);
labels[i].setBounds(x, y, 32, 32);
panel.add(labels[i]);
x += 150;
}
scrollPane.setViewportView(panel);
我尝试将这些标签添加到嵌入scrollPane
的面板中。除最后几个超过面板大小的标签外,标签显示正确。 scrollPane
不会滚动。我已尝试.setLayout
各种不同的布局,仍然没有结果。我错过了关于如何做到的事情吗?
答案 0 :(得分:0)
好的,我使用了GridBagLayout。
public static void main(String args[]){
JFrame contentPane = new JFrame();
JScrollPane scrollPane = new JScrollPane(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollPane.setBounds(23, 11, 50, 50);
contentPane.add(scrollPane);
JPanel panel = new JPanel();
JLabel[] labels=new JLabel[8]; //callout.getRedCount() = 8
panel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.insets = new Insets(0,10,0,0);
int x = 50;
int y = 50;
for (int i=0;i<8;i++){ //callout.getRedCount() = 8
labels[i]=new JLabel("Red" + i);
gbc.gridx = i;
panel.add(labels[i], gbc);
}
scrollPane.setViewportView(panel);
contentPane.setSize(50,50);
contentPane.setVisible(true);
}
您可以更改值,这是非常粗糙。希望这有帮助!