我似乎无法在ActionListener中更改JButton ActionCommand。我试图通过更改ActionCommand多次使用相同的两个按钮，但这似乎不起作用。
这是我的代码，希望可以为您提供帮助：
void ChangeAction() {
storyButn1.setActionCommand("but3");
storyButn2.setActionCommand("but4");
}
public Main() {
story.setText("<html>You wake up with a sore head in a dark forest. You can't remember anything, except from the word H.E.L.P. You see a light in the distance, What to do? </html>");
storyButn1.addActionListener(this);
storyButn1.setActionCommand("but1");
storyButn2.addActionListener(this);
storyButn2.setActionCommand("but2");
Box Layout = new Box(BoxLayout.Y_AXIS);
Layout.add(story);
Layout.setSize(story.getWidth() + 10, story.getHeight());
frame.setVisible(true);
frame.setSize(400, 200);
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.add(Layout, BorderLayout.CENTER);
frame.add(storyButn1);
frame.add(storyButn2);
frame.setTitle("Text Adventure");
frame.setLayout(new GridLayout(3, 2, 5, 5));
frame.getContentPane().setBackground(Color.lightGray);
}
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("but1")) {
random = (int) (Math.round(Math.random()) * 10);
if (random == 10) {
story.setText("<html>You run towards the light source. It's dark and you don't see that root in the ground. You break your ankle!</html>");
storyButn1
.setText("<html>Lay against a tree and hope for the best?</html>");
storyButn2.setText("<html>Call out for help?</html>");
} else {
story.setText("<html>You walk carefully towards the light source, When you reach it, you find that it is a torch.</html>");
storyButn1.setText("Pick it up?");
storyButn2.setText("Switch it off?");
}
}
if (e.getActionCommand().equals("but2")) {
random = (int) (Math.round(Math.random()) * 20);
if (random == 20) {
story.setText("<html>You are near the top of the tree when your foot slips. You go plummeting back into the darkness, never to be seen again.");
storyButn1.setText("Retry?");
storyButn2.setText("Retry?");
if (e.getActionCommand().equals("but1") || e.getActionCommand().equals("but2")) {
this.dispose();
frame.setVisible(false);
new Main();
}
} else {
story.setText("<html>You successfully climb to the top of the tree where you find a safe spot to sit. You stay there for a while, *BANG*, You hear something in the distance!</html>");
ChangeAction();
storyButn1.setText("Climb down and investigate?");
storyButn2.setText("Follow the light source?");
if(e.getActionCommand().equals("but3")){
story.setText("<html>You slowly climb down the tree. When you reach the bottom, you try to follow where you think the sound had come from. As your walking you look down. There is a loaded revolver with one bullet missing and a trail of blood.</html>");
} else if(e.getActionCommand().equals("but4")){
story.setText("<html>You walk carefully towards the light source, When you reach it, you find that it is a torch.</html>");
}
}
}
}
最佳答案
如果操作命令是"but3"或"but4"，则只有一个地方可以执行某些操作，并且该地方位于以下if块内：
if (e.getActionCommand().equals("but2")) {
显然，动作命令不可能同时是
"but2"和"but3"或"but4"。是一个或另一个。因此，以下
if块的条件将始终取值为false：if(e.getActionCommand().equals("but3")){
story.setText("<html>You slowly climb down the tree. When you reach the bottom, you try to follow where you think the sound had come from. As your walking you look down. There is a loaded revolver with one bullet missing and a trail of blood.</html>");
} else if(e.getActionCommand().equals("but4")){
story.setText("<html>You walk carefully towards the light source, When you reach it, you find that it is a torch.</html>");
}
编辑：
回顾一下，
actionPerformed()方法如下所示：public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("but1")) {
// do something
}
if (e.getActionCommand().equals("but2")) {
// do something
}
}
它不能处理动作命令为
"but3"或"but4"的情况。