我提前完成了一个项目,所以在提交之前剩下的时间,我想进行实验。整个程序运行良好,JButton完全按照他们的编程方式完成。
将ImageIcon添加到我的JButtons后出现问题。我将展示一些JButton初始化并在每个块上方的单个注释中显示原始文件:
/**
* create child components
*/
private void initComponents() {
//normalSetupButton = new JButton("Normal Setup");
ImageIcon normalButtonImage = new ImageIcon("src/Images/normalIcon.png");
normalSetupButton = new JButton();
normalSetupButton.setIcon(normalButtonImage);
normalSetupButton.addActionListener(buttonHandler);
normalSetupButton.setToolTipText("Set up simulation for normal execution");
// queen test button
//queenTestButton = new JButton("Queen Test");
ImageIcon queenButtonImage = new ImageIcon("src/Images/yellowIcon.jpg");
queenTestButton = new JButton();
queenTestButton.setIcon(queenButtonImage);
queenTestButton.addActionListener(buttonHandler);
queenTestButton.setToolTipText("Set up to test Queen Lifespan or Food Levels");
// scout test button
//scoutTestButton = new JButton("Scout Test");
ImageIcon scoutButtonImage = new ImageIcon("src/Images/blueIcon.png");
scoutTestButton = new JButton();
scoutTestButton.setIcon(scoutButtonImage);
scoutTestButton.addActionListener(buttonHandler);
scoutTestButton.setToolTipText("Set up simulation for testing the Scout ant");
}
按钮的唯一差异在于现在有ImageIcons而不是文本。
我的问题在于以下代码。这是我第一次在按钮上使用ImageIcons,所以我一直习惯于“button.getText()。equals(”Button String“);”
public void actionPerformed(ActionEvent e) {
// get the button that was pressed
JButton b = (JButton) e.getSource();
// fire appropriate event
if (b.getText().equals("Normal Setup")) {
// set up for normal simulation
fireSimulationEvent(SimulationEvent.NORMAL_SETUP_EVENT);
} else if (b.getText().equals("Queen Test")) {
// set for testing the queen ant
fireSimulationEvent(SimulationEvent.QUEEN_TEST_EVENT);
} else if (b.getText().equals("Scout Test")) {
// set for testing the scout ant
fireSimulationEvent(SimulationEvent.SCOUT_TEST_EVENT);
} else if (b.getText().equals("Forager Test")) {
// set for testing the forager ant
fireSimulationEvent(SimulationEvent.FORAGER_TEST_EVENT);
} else if (b.getText().equals("Soldier Test")) {
// set for testing the soldier ant
fireSimulationEvent(SimulationEvent.SOLDIER_TEST_EVENT);
} else if (b.getText().equals("Run")) {
// run the simulation continuously
fireSimulationEvent(SimulationEvent.RUN_EVENT);
} else if (b.getText().equals("Step")) {
// run the simulation one turn at a time
fireSimulationEvent(SimulationEvent.STEP_EVENT);
} else if (b.getText().equals("Stop")) {
//stop everything
fireSimulationEvent(SimulationEvent.STOP_EVENT);
}
}
那么,Swing大师,如何基于JButton的ImageIcon触发事件?感谢您提供的任何帮助。如果这不起作用,我很乐意用纯文本将其改回旧版本。
注意是的,我知道图片的格式不同。它们不会是最终的图像。我只是测试并抓住了我现在能找到的任何格式。
答案 0 :(得分:3)
我认为重写代码的最佳方法是使用按钮的客户端属性。
change_third_set_colour
这看起来好于" if-else if"级联;)
答案 1 :(得分:2)
您没有为JButton设置任何文本,因此它不起作用,如果您设置文本文本,那么它将出现在图像上,所以你可以做一件事
1.设置setName
方法并为其添加文本。
2.在actionPerformed
中,使用getName
而不是getText
。
例如:
ImageIcon normalButtonImage = new ImageIcon("src/Images/normalIcon.png");
normalSetupButton = new JButton();
normalSetupButton.setIcon(normalButtonImage);
normalSetupButton.setName("Normal Setup");
normalSetupButton.addActionListener(buttonHandler);
normalSetupButton.setToolTipText("Set up simulation for normal execution");
在行动中:
public void actionPerformed(ActionEvent e) {
// get the button that was pressed
JButton b = (JButton) e.getSource();
// fire appropriate event
if (b.getName().equals("Normal Setup")) {
// set up for normal simulation
fireSimulationEvent(SimulationEvent.NORMAL_SETUP_EVENT);
}
......
答案 2 :(得分:1)
您可以通过多种方式实现此目标
只需使用Ctr + N
source
即可
ActionEvent
如果你有对原始按钮的引用
,这可能没问题为每个按钮分配Action voting = new AbstractAction(){
@Override
public void actionPerformed(ActionEvent e){
if (e.getSource() == vote_up) {
//...
} else if (...) {
//...
}
}
};
actionCommand
充分利用JButton vote_up = new JButton(upvote);
vote_up.setActionCommand("vote.up");
JButton vote_down = new JButton(downvote);
vote_down .setActionCommand("vote.down");
//...
Action voting = new AbstractAction(){
@Override
public void actionPerformed(ActionEvent e){
if ("vote.up".equals(e.getActionCommand())) {
//...
} else if (...) {
//...
}
}
};
API并为每个按钮制作单独的,自包含的操作......
Action
然后你可以简单地使用
public class VoteUpAction extends AbstractAction {
public VoteUpAction() {
putValue(SMALL_ICON, new ImageIcon(getClass().getResource("vote_up.png")));
}
@Override
public void actionPerformed(ActionEvent e) {
// Specific action for up vote
}
}
这将根据JButton vote_up = new JButton(new VoteUpAction());
//...
的属性配置按钮,并在触发按钮时触发它的Action
方法。通过这种方式,您可以100%了解调用actionPerformed
方法时应该/需要做的事情,毫无疑问。
详细了解How to Use Actions了解更多详情
答案 3 :(得分:0)
@ Sandeep.K
我仍然会接受你的回答,因为我喜欢对"正常设置"的短暂呼叫。在看到你的答案之前,我走了很远的路。两者都有效,但你的更好。
public void actionPerformed(ActionEvent e) {
// get the button that was pressed
JButton b = (JButton) e.getSource();
// fire appropriate event
if(b.getToolTipText().equals("Set up simulation for normal execution")) {
fireSimulationEvent(SimulationEvent.NORMAL_SETUP_EVENT);
}
else if(b.getToolTipText().equals("Set up to test Queen Lifespan or Food Levels")) {
fireSimulationEvent(SimulationEvent.QUEEN_TEST_EVENT);
}
else if (b.getToolTipText().equals("Set up simulation for testing the Forager ant (Scouts are included)")) {
// set for testing the forager ant
fireSimulationEvent(SimulationEvent.FORAGER_TEST_EVENT);
} else if (b.getToolTipText().equals("Set up simulation for testing the Soldier ant (Scouts are included")) {
// set for testing the soldier ant
fireSimulationEvent(SimulationEvent.SOLDIER_TEST_EVENT);
} else if (b.getToolTipText().equals("Run the simulation continuously")) {
// run the simulation continuously
fireSimulationEvent(SimulationEvent.RUN_EVENT);
} else if (b.getToolTipText().equals("Step through the simulation one turn at a time")) {
// run the simulation one turn at a time
fireSimulationEvent(SimulationEvent.STEP_EVENT);
} else if (b.getToolTipText().equals("Stop or Pause the simulation")) {
//stop everything
fireSimulationEvent(SimulationEvent.STOP_EVENT);
}