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首先,我是全新到Java:/爪哇 - 聽變量變化
我一直在試圖解決現在我自己這個問題,約2天,但不能讓周圍的問題就是我試圖實現一個可變更改監聽器。我已經嘗試過沒有成功實現Observer和Observable到我的項目,但最好沒有成功,我通過將代碼的一些元素包裝到while循環中,但很失敗。
任何如何這是我的課,如果你看看它,我有一些全局變量定義後,構造函數我需要監聽所有這些全局變量的變化,如果更改我想執行一個方法。
我被告知JavaFX有方法可以監聽變量,有人可以確認這一點。 無論如何感謝您的幫助提前。
public class Tower_Controller {
public Tower_Controller() {
}
//Global variables
String isSelected = null;
int hasModules = 0;
int cap_s = 0;
int cpu_s = 0;
int cap = 0;
int cpu = 0;
int shield = 0;
int armor = 0;
double em = 00.00;
double th = 00.00;
double ki = 00.00;
double ex = 00.00;
public void invoke() {
Invoke_GUI runnable = new Invoke_GUI();
final JLabel tower_name = runnable.tower_name;
final JComboBox tower_select = runnable.tower_select;
final JTree module_browser = runnable.module_browser;
final JTree selected_modules = runnable.selected_modules;
final JProgressBar cap_bar = runnable.cap_bar;
final JProgressBar cpu_bar = runnable.cpu_bar;
final JLabel em_res = runnable.em;
final JLabel th_res = runnable.thermic;
final JLabel ki_res = runnable.kinetic;
final JLabel ex_res = runnable.explosive;
tower_select.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (isSelected != null) {
Events evt = new Events();
evt.towerSelected(isSelected);
} else {
tower_name.setText(tower_select.getSelectedItem().toString());
isSelected = tower_name.toString();
}
}
});
removeTower(tower_name);
runnable.setVisible(true);
}
public void updateValues(final JProgressBar cap_bar, final JProgressBar cpu_bar, final JLabel em_res,
final JLabel th_res, final JLabel ki_res, final JLabel ex_res){
cap_bar.setMaximum(cap);
cap_bar.setString(cap_s + "/" + cap);
cap_bar.setStringPainted(true);
cpu_bar.setMaximum(cpu);
cpu_bar.setString(cpu_s + "/" + cpu);
cpu_bar.setStringPainted(true);
String em_v = String.valueOf(em);
em_res.setText(em_v);
String th_v = String.valueOf(th);
th_res.setText(th_v);
String ki_v = String.valueOf(ki);
ki_res.setText(ki_v);
String ex_v = String.valueOf(ex);
ex_res.setText(ex_v);
}
public void updateList(final ArrayList<String> nodes, final JTree selected_modules) {
DefaultMutableTreeNode nod = new DefaultMutableTreeNode();
for (int i = 0; i < nodes.size(); i++) {
nod.add(new DefaultMutableTreeNode(nodes.get(i)));
}
selected_modules.setModel(new DefaultTreeModel(nod));
}
public void removeTower(final JLabel tower_name) {
tower_name.addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent e) {
if (hasModules == 1 & isSelected != null) {
Events evt = new Events();
evt.towerHasModules();
} else if (isSelected == null) {
} else {
tower_name.setText("No Control Tower selected");
isSelected = null;
}
}
@Override
public void mousePressed(MouseEvent e) {
}
@Override
public void mouseReleased(MouseEvent e) {
}
@Override
public void mouseEntered(MouseEvent e) {
}
@Override
public void mouseExited(MouseEvent e) {
}
});
}
public JLabel setTowerName(JLabel a, String name) {
a.setText(name);
return a;
}
}
+1。他不能使用PropertyChangeListener? – 2011-12-15 04:19:15