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所以我有這個JFrame,它包含一個JPanel,並且在那裏我添加了JLabels和我想要的信息,但是因爲我一直在添加標籤,所以文本太長了,所以我想添加一個滾動條。基本上我想讓JFrame帶有一個可滾動的JPanel。我有這個代碼,但我的問題是,即使滾動條出現,但它不會移動,並且當文本很多時不起作用,這意味着文本仍然被剪切掉,滾動條沒有移動。有誰知道如何解決這一問題?如何製作包含Jpanel滾動條的Jframe?
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class Bar {
JFrame info = new JFrame("Information");
JLabel ballinf = new JLabel();
JPanel contentPane = new JPanel();
JScrollPane scrolling = new JScrollPane();
public Bar(){
contentPane.setOpaque(true);
contentPane.setBackground(Color.WHITE);
contentPane.setLayout(null);
scrolling = new JScrollPane(contentPane,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
info.add(scrolling);
info.setSize(750, 600);
info.setLocationByPlatform(true);
info.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
info.setVisible(true);
}
public void adding(int pos){
ballinf = new JLabel("Something ",JLabel.CENTER);//assume the text will be bigger here and have more info
ballinf.setSize(700, 30);
ballinf.setForeground(Color.green);
ballinf.setLocation(5, 5+pos);
contentPane.add(ballinf);
info.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
info.setVisible(true);
}
public static void main(String[] args){
Bar stats = new Bar();
stats.adding(0);
stats.adding(20);//this will be done in a for loop for more than 2 times so the text ends up to be a lot
}
}
,應重新驗證和重繪被稱爲? – DarkV1
那麼我應該刪除setLayout(null)命令? – helpme
@helpme,你試過了嗎? – camickr