【发布时间】：2014-05-21 11:34:18
【问题描述】：
我正在做一个测验应用程序。当一个团队按下他们的按钮时，测验的管理员会弹出一个 jframe，表明团队按下了他们的按钮，在那个 JFrame 中有问题和答案，如果团队回答正确，他可以转到下一个问题，如果他们难道他不能继续这个问题。见图片：http://imgur.com/EtzH8Hq // 抱歉我还没有 10 声望。
由于此 JFrame 中的大部分文本都是动态的（您不知道一个问题有多少答案/选项等），因此我为此使用了 gridbaglayout。
在我添加按钮之前，一切都显示得很好，我想要右下角的恢复按钮和计算按钮，或者左下角的 1 和右下角的另一个。我尝试在我的代码中执行此操作，但它没有放在应有的位置。
有什么帮助吗？
这是我尝试执行此操作的代码：
public class GiveScoreView extends JFrame implements View {
Observable $model;
Controller $controller;
private Question $question; /* Saves the question that is passed by the update */
/*GUI elements */
ArrayList<JLabel> $answerLabels;
ArrayList<JCheckBox> $checkBoxes;
JLabel $questionLabel;
JLabel $teamPressedLabel;
/* 2 buttons to resume/end the question */
JButton $resumeButton;
JButton $calculateButton;
public GiveScoreView(Observable model, Controller controller) {
setModel(model);
setController(controller);
$answerLabels = new ArrayList<JLabel>();
$checkBoxes = new ArrayList<JCheckBox>();
$questionLabel = new JLabel();
$teamPressedLabel = new JLabel();
$question = null;
$resumeButton = new JButton("Resume question"); /* TODO messagebundle */
$calculateButton = new JButton("Calculate score"); /* TODO messagebundle */
/* Add actionlisteners to the buttons */
$resumeButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if($question != null){
if($question.getMediaPath() != null && QuizSoftwareModel.$vlcPath != null) /* If there is an audio/video piece */
((GiveScoreController)getController()).resumeMP(); /* Resume the mediaplayer if there is an audio/video piece */
((GiveScoreController)getController()).resumeQuestion(); /* Resume the question */
closeFrame(); /* Close the frame */
}
}
});
$calculateButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if($question != null){
if($question.getMediaPath() != null && QuizSoftwareModel.$vlcPath != null) /* If there is an audio/video piece */
((GiveScoreController)getController()).closeMP(); /* Close the mediaplayer */
((GiveScoreController)getController()).nextQuestion(); /* Go on to the next question */
closeFrame(); /* Close the frame */
}
}
});
initializeFrame();
}
/**
* Initializes the frame
*/
private void initializeFrame() {
setTitle("Give a score to the teams"); /* TODO languagebundle, Change the title of the frame */
getContentPane().setLayout(new GridBagLayout());/* Set the layout to gridbaglayout */
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
dispose();
}
});
pack();
setVisible(false); /* Don't display it on default */
}
@Override
public void update(Observable arg0, Object arg1) {
$question = (Question) arg1;
/* Now we need to display this frame */
if(((QuizModel) getModel()).getDisplayScoreView()){
$teamPressedLabel.setText("Team " + Integer.toString(((QuizModel) getModel()).getTeamPressed()) + " is ready to answer!"); /* TODO messagebundle */
$teamPressedLabel.setFont(new Font("Serif", Font.PLAIN, 34)); /* Change the font */
displayScoreView();
setVisible(true); /* Now display the JFrame */
}
}
private void displayScoreView() {
Multipleanswer multipleanswerQuestion; /* a multiple answer question to display the multipleanswer questions */
Multiplechoice multiplechoiceQuestion; /* a multiple choice question to display the multiplechoice questions */
ArrayList<String> answers = null;
GridBagConstraints c = new GridBagConstraints();
/* Set the position of the JFrame so it's centered */
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
// Determine the new location of the window
int w = getSize().width;
int h = getSize().height;
int x = (dim.width - w) / 2;
int y = (dim.height - h) / 2;
int i = 0;
// Move the window
setLocation(x - 150, y - 150);
/* Set size */
setSize(550, 300);
/* If the question isn't empty */
if (!($question == null)) {
c.anchor = GridBagConstraints.NORTHWEST;
$questionLabel.setText($question.getQuestion()); /* Set the text of the JLabel to the question itself */
$questionLabel.setFont(new Font("Serif", Font.PLAIN, 26)); /* Change the font */
getContentPane().add($teamPressedLabel,c); /* Add the label to the JFrame, the team that has pressed it's button */
c.weighty = 1.0;
/* Display the question under the team pressed text */
c.gridx = 0;
c.gridy = 1;
getContentPane().add($questionLabel,c); /* Add the label to the JFrame, the question itself */
/* If the type of the question is multipleanswer */
if ($question.getType() == QuestionType.MULTIPLEANSWER) {
/* Cast it to multipleanswer question */
multipleanswerQuestion = (Multipleanswer) $question;
/* Get the answers */
answers = multipleanswerQuestion.getAnswers();
} else if ($question.getType() == QuestionType.MULTIPLECHOICE) {
/* Cast it to multiplechoice question */
multiplechoiceQuestion = (Multiplechoice) $question;
/* Get the answers */
answers = multiplechoiceQuestion.getAnswers();
}
/* Speed questions don't show answers so we only display answers if it's not a speed question */
if ($question.getType() != QuestionType.SPEED) {
/* Make a JLabel and JCheckBox for each answer */
for (i = 0; i < answers.size(); i++) {
$answerLabels.add(new JLabel(answers.get(i))); /* Make a new JLabel with answer string as text */
$checkBoxes.add(new JCheckBox()); /* Make a new JCheckBox */
$answerLabels.get(i).setFont(new Font("Serif", Font.PLAIN, 16));
c.gridx = 0;
c.gridy = i + 2;
getContentPane().add($answerLabels.get(i),c); /* Add the label to the JFrame */
c.gridx = 1;
c.gridy = i + 2;
getContentPane().add($checkBoxes.get(i),c); /* Add the checkbox to the JFrame */
}
}
/* Place the buttons */
c.gridx = 0;
c.gridy = i + 2;
getContentPane().add($resumeButton);
c.gridx = 1;
c.gridy = i + 2;
getContentPane().add($calculateButton);
}
}
/**
* Closes the JFrame
*/
protected void closeFrame() {
this.dispose();
}
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标签： java swing jbutton layout-manager gridbaglayout