如图，我需要垂直添加两个JScrollPane。而他们俩分配的大小不一样，所以我用了GridBagLayout布局。但我在实际操作的时候发现，GridBagLayout只能设置相对的大小。而JScrollPane必须超过大小才显示滚动条，所以他们俩矛盾了。最后直接不显示了。求教
代码如图：
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.ScrollPane;
import java.awt.Toolkit;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
/**
- @author JiaWenRuo
- @date 2016-10-18 下午12:42:17
- @version
-
@TODO
*/
public class Test1 extends JFrame{/**
-
@param args
*/
JScrollPane jScrollPane;
JPanel jPanel;
JLabel jLabel;
JSplitPane jSplitPane;
public Test1(){
setSize(Toolkit.getDefaultToolkit().getScreenSize().width, Toolkit.getDefaultToolkit().getScreenSize().height/6);
GridBagLayout gridBagLayout = new GridBagLayout();
setLayout(gridBagLayout);
GridBagConstraints c = new GridBagConstraints();
jLabel = new JLabel("ss");//上边随便用标签代替
c.weightx =100;
c.weighty =100;
c.gridwidth = GridBagConstraints.REMAINDER;
c.gridheight = 1;
c.gridx= 0;
c.gridy = 0;
gridBagLayout.setConstraints(jLabel, c);
add(jLabel);jPanel = new JPanel(new GridLayout(10,1));
for (int i = 0; i < 10; i++) {
jPanel.add(new JButton("ss"));
}
//下边滚动显示10个按钮，出不来效果
jScrollPane = new JScrollPane(jPanel,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
c.weightx =100;
c.weighty =0;
c.gridwidth = GridBagConstraints.REMAINDER;
c.gridheight = 1;
c.gridx= 0;
c.gridy = 1;
gridBagLayout.setConstraints(jScrollPane, c);
add(jScrollPane);
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new Test1().setVisible(true);
} -
}
现在直接不显示，是这样的
