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我的計算器有點問題。主「GUI」具有數字鍵盤和一些操作符，但是我爲所有三角函數添加了JMenuItem，就像它們在新窗口中打開一樣。我在主GUI（+， - ，sqrt，power等）上使用運算符沒有問題，但我似乎無法使Trigonmetric函數正常工作。我在我的代碼中註釋了更多信息（讀取第三個最後一個實例變量t後面的註釋）。計算器：不能在我的主GUI的彈出窗口中使用ActionListener
public class Calculator extends JFrame
{
//TILVIKSBREYTUR
JFrame rammi; //Rammi inniheldur panel
JPanel pnl; //Panel inniheldur takka
private final Font BIGGER_FONT = new Font("monspaced", Font.PLAIN, 20); //Letur
public JTextField txt; //Textareitur
private JButton b0; //b0 - b9 eru númeratakkar
private JButton b1;
private JButton b2;
private JButton b3;
private JButton b4;
private JButton b5;
private JButton b6;
private JButton b7;
private JButton b8;
private JButton b9;
private JButton bDecPoint; //Decimal point
private JButton bc; //Clear takki, endurstillir textareit
private JButton bPlus; //Plús takki
private JButton bMinus; //Mínus takki
private JButton bPower; //Veldatakki
private JButton bSqrt; //Kvaðratrótartakki
private JButton bDivide; //Deilingar takki
private JButton bMult; //Margföldunar takki
private JButton bxRoot; //N-tu rótartakki
private JButton bEqual; //Jafnt og takki
private JButton bPer; //prósent
private JButton bAns; //síðasta útkoma
private JButton bPi; //Pi
private JButton bSvigi1; //Svigi
private JButton bSvigi2; //Svigi
private JSeparator sep1; //Separator, skilur að textareit og lyklaborð
private JSeparator sep2; //Separatorm skilur að númer og virkja
public boolean number; //tala
public boolean degPressed; //Er Degrees valið ?
public boolean trigOpen; //Er Trigonmetry flipinn opinn?
public boolean trigOpenOp; //hjálpar breyta fyrir virkni
public String equalOp; //Strengur fyrir virkja
public String ans;
public String ansOp; //Strengur
private JMenuBar menuBar; //Menu bar
private JMenu file; //Flipi í menu bar
private JMenuItem trigon; //Hornaföll
private JRadioButtonMenuItem deg; //undirgluggi flipa í menubar
private JRadioButtonMenuItem rad; //undirgluggi flipa í menubar
private Trigonmetry t; //if I do: private Trigonmetry t = new Trigonmetry then it works
//perfectly but if I do that then the Trigonmetry window opens up
//when I open the Calculator but I just want Trigonmetry window
//to open up when Trigonmetry MenuItem i pressed
private CalculatorOp op = new CalculatorOp(); //CalculatorOp classi sem sér um virkni virkjanna
public Calculator(){
initUI();
}
public final void initUI(){
//TILVIKSBREYTUM GEFID GILDI
rammi = new JFrame();
degPressed = false;
trigOpen = false;
trigOpenOp = false;
trigon = new JMenuItem("Trigonmetry");
pnl = new JPanel();
txt = new JTextField("0.0");
menuBar = new JMenuBar();
file = new JMenu("File");
file.setMnemonic(KeyEvent.VK_F);
deg = new JRadioButtonMenuItem("Degrees");
rad = new JRadioButtonMenuItem("Radians", true);
number = true;
equalOp = "=";
ansOp = "ANS";
sep1 = new JSeparator();
sep2 = new JSeparator(SwingConstants.VERTICAL);
b0 = new JButton("0");
b1 = new JButton("1");
b2 = new JButton("2");
b3 = new JButton("3");
b4 = new JButton("4");
b5 = new JButton("5");
b6 = new JButton("6");
b7 = new JButton("7");
b8 = new JButton("8");
b9 = new JButton("9");
bc = new JButton("C");
bPer = new JButton("%");
bAns = new JButton("ANS");
bDecPoint = new JButton(".");
bPlus = new JButton("+");
bMinus = new JButton("-");
bPower = new JButton("x^n");
bSqrt = new JButton("√x");
bxRoot = new JButton("n√x");
bDivide = new JButton("/");
bMult = new JButton("*");
bEqual = new JButton("=");
//bSvigi1 = new JButton("(");
//bSvigi2 = new JButton(")");
//HÖNNUN RAMMA
setTitle("GCalc");
setLocationRelativeTo(null);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setMinimumSize(new Dimension(370, 280));
//STADSETNING HLUTA
txt.setHorizontalAlignment(JTextField.RIGHT);
txt.setFont(BIGGER_FONT);
pnl.setLayout(null);
//tölur og clear
bc.setBounds(10, 10, 50, 30);
pnl.add(bc);
bDecPoint.setBounds(10, 190, 50, 30);
pnl.add(bDecPoint);
b0.setBounds(70, 190, 50, 30);
pnl.add(b0);
b1.setBounds(10, 150, 50, 30);
pnl.add(b1);
b2.setBounds(70, 150, 50, 30);
pnl.add(b2);
b3.setBounds(130, 150, 50, 30);
pnl.add(b3);
b4.setBounds(10, 110, 50, 30);
pnl.add(b4);
b5.setBounds(70, 110, 50, 30);
pnl.add(b5);
b6.setBounds(130, 110, 50, 30);
pnl.add(b6);
b7.setBounds(10, 70, 50, 30);
pnl.add(b7);
b8.setBounds(70, 70, 50, 30);
pnl.add(b8);
b9.setBounds(130, 70, 50, 30);
pnl.add(b9);
//virkjar
bAns.setBorder(null);
bAns.setBounds(130, 190, 50, 30);
pnl.add(bAns);
bPlus.setBorder(null);
bPlus.setBounds(200, 70, 30, 30);
pnl.add(bPlus);
bMinus.setBorder(null);
bMinus.setBounds(240, 70, 30, 30);
pnl.add(bMinus);
bSqrt.setBorder(null);
bSqrt.setBounds(240, 150, 30, 30);
pnl.add(bSqrt);
bPower.setBorder(null);
bPower.setBounds(200, 150, 30, 30);
pnl.add(bPower);
bDivide.setBorder(null);
bDivide.setBounds(200, 110, 30, 30);
pnl.add(bDivide);
bMult.setBorder(null);
bMult.setBounds(240, 110, 30, 30);
pnl.add(bMult);
bxRoot.setBorder(null);
bxRoot.setBounds(280, 70, 30, 30);
pnl.add(bxRoot);
bPer.setBorder(null);
bPer.setBounds(320, 70, 30, 30);
pnl.add(bPer);
//bSvigi1.setBorder(null);
//bSvigi1.setBounds(280, 110, 30, 30);
//pnl.add(bSvigi1);
//bSvigi2.setBorder(null);
//bSvigi2.setBounds(320, 110, 30, 30);
//pnl.add(bSvigi2);
bEqual.setBounds(200, 190, 70, 30);
pnl.add(bEqual);
//seperators & textfield
sep1.setBounds(20, 50, 330, 10);
pnl.add(sep1);
sep2.setBounds(190, 60, 10, 160);
pnl.add(sep2);
txt.setBounds(70, 10, 280, 30);
pnl.add(txt);
add(pnl);
//Setjum inní Menu
file.add(deg);
file.add(rad);
file.add(trigon);
menuBar.add(file);
getContentPane().add(menuBar, BorderLayout.NORTH);
//HLUTIR SYNILEGIR
setVisible(true);
//NUMBER LISTENER
ActionListener numberListener = new NumberListener();
b0.addActionListener(numberListener);
b1.addActionListener(numberListener);
b2.addActionListener(numberListener);
b3.addActionListener(numberListener);
b4.addActionListener(numberListener);
b5.addActionListener(numberListener);
b6.addActionListener(numberListener);
b7.addActionListener(numberListener);
b8.addActionListener(numberListener);
b9.addActionListener(numberListener);
bDecPoint.addActionListener(numberListener);
//bSvigi1.addActionListener(numberListener);
//bSvigi2.addActionListener(numberListener);
//OPERATOR LISTENER
ActionListener operatorListener = new OperatorListener();
bPlus.addActionListener(operatorListener);
bMinus.addActionListener(operatorListener);
bDivide.addActionListener(operatorListener);
bMult.addActionListener(operatorListener);
bSqrt.addActionListener(operatorListener);
bPower.addActionListener(operatorListener);
bEqual.addActionListener(operatorListener);
bxRoot.addActionListener(operatorListener);
bPer.addActionListener(operatorListener);
if(trigOpen){
t.bCos.addActionListener(operatorListener);
}
//ANS LISTENER
ActionListener ansListener = new AnsListener();
bAns.addActionListener(ansListener);
//CLEAR LISTENER
ActionListener clearListener = new ClearListener();
bc.addActionListener(clearListener);
//Menu LISTENER
ActionListener menuListener = new MenuListener();
trigon.addActionListener(menuListener);
//RadioButton LISTENER
ActionListener radioListener = new RadioListener();
deg.addActionListener(radioListener);
//RadioButton LISTENER 2
ActionListener radioListener2 = new RadioListener2();
rad.addActionListener(radioListener2);
}
/**E: Núllstillir
private void action() {
number = true;
txt.setText("0.0");
equalOp = "=";
op.setTotal("0.0");
} */
//VIRKNI RADIO TAKKANS SEM BREYTIR YFIR Í GRÁÐUR
class RadioListener implements ActionListener{
public void actionPerformed(ActionEvent e){
degPressed = true;
}
}
//VIRKNI RADIO TAKKANS SEM BREYTIR YFIR Í RADÍANA
class RadioListener2 implements ActionListener{
public void actionPerformed(ActionEvent e){
degPressed = false;
}
}
//VIRKNI CLEAR TAKKANS
class ClearListener implements ActionListener{
public void actionPerformed(ActionEvent e){
txt.setText("0.0");
}
}
//VIRKNI TRIGONMETRY FLIPA
class MenuListener implements ActionListener{
public void actionPerformed(ActionEvent e){
t = new Trigonmetry();
trigOpen = true;
}
}
//VIRKNI ANS TAKKA
class AnsListener implements ActionListener{
public void actionPerformed(ActionEvent e){
ansOp = e.getActionCommand();
if (ansOp.equals("ANS")) {
txt.setText(ans);
}
else
txt.setText("0.0");
}
}
//VIRKNI TALNA TAKKA
class NumberListener implements ActionListener{
public void actionPerformed(ActionEvent event){
String digit = event.getActionCommand();
if (number){
txt.setText(digit);
number = false;
}
else{
txt.setText(txt.getText() + digit);
}
}
}
// VIRKNI "VIRKJA"
class OperatorListener implements ActionListener{
public void actionPerformed(ActionEvent e){
if (number){
//action();
txt.setText("0.0");
}
else{
number = true;
String displayText = txt.getText();
if (equalOp.equals("=")) {
op.setTotal(displayText);
}
else if (equalOp.equals("+")) {
op.add(displayText);
}
else if (equalOp.equals("-")) {
op.subtract(displayText);
}
else if (equalOp.equals("*")) {
op.multiply(displayText);
}
else if (equalOp.equals("/")) {
op.divide(displayText);
}
else if(equalOp.equals("x^n")){
op.power(displayText);
}
else if(equalOp.equals("√x")){
op.squareRoot(displayText);
}
else if(equalOp.equals("n√x")){
op.xRoot(displayText);
}
else if(equalOp.equals("%")){
op.perCent(displayText);
}
// else if(t.operand.equals("cos")){
// if(degPressed){
// op.cOsDeg(displayText);
//}
//else
// op.cOs(displayText);
//}
//else if(equalOp.equals("sin")){
// op.sIn(displayText);
//}
//else if(equalOp.equals("tan")){
// op.tAn(displayText);
//}
txt.setText("" + op.getTotalString());
ans = txt.getText();
equalOp = e.getActionCommand();
//t.operand = e.getActionCommand();
}
}
}
//*************** MAIN ***************//
public static void main(String args[]) {
SwingUtilities.invokeLater(new Runnable(){
public void run(){
Calculator calc = new Calculator();
}
});
}
}
這裏是我的Tigonmetry類，你可以看到我試圖建立一個ActionListener還有
public class Trigonmetry extends JFrame
{
JFrame frm; //rammi
public JButton bCos; //Cosinus
public JButton bSin; //Sinus
public JButton bTan; //Tangens
public JButton baCos; //arc Cosinus
public JButton baSin; //arc Sinus
public JButton baTan; //arc Tangens
private JPanel panel; //Panel
public String operand;
public Calculator cal;
private CalculatorOp opp = new CalculatorOp();
public Trigonmetry(){
InitialUI();
}
public final void InitialUI(){
frm = new JFrame();
operand = "";
bCos = new JButton("cos");
bSin = new JButton("sin");
bTan = new JButton("tan");
baCos = new JButton("acos");
baSin = new JButton("asin");
baTan = new JButton("atan");
panel = new JPanel();
//HÖNNUN RAMMA
setTitle("Trigonmetry");
setLocationRelativeTo(null);
setMinimumSize(new Dimension(180, 110));
panel.setLayout(null);
//TAKKAR
bSin.setBorder(null);
bSin.setBounds(20, 10, 40, 30);
panel.add(bSin);
bCos.setBorder(null);
bCos.setBounds(70, 10, 40, 30);
panel.add(bCos);
bTan.setBorder(null);
bTan.setBounds(120, 10, 40, 30);
panel.add(bTan);
baCos.setBorder(null);
baCos.setBounds(20, 50, 40, 30);
panel.add(baCos);
baSin.setBorder(null);
baSin.setBounds(70, 50, 40, 30);
panel.add(baSin);
baTan.setBorder(null);
baTan.setBounds(120, 50, 40, 30);
panel.add(baTan);
add(panel);
//HLUTIR SYNILEGIR
setVisible(true);
//OPERATORLISTENER
ActionListener operandListener = new OperandListener();
bCos.addActionListener(operandListener);
bSin.addActionListener(operandListener);
bTan.addActionListener(operandListener);
}
// VIRKNI "VIRKJA"
class OperandListener implements ActionListener{
public void actionPerformed(ActionEvent e){
if (cal.number){
//action();
cal.txt.setText("0.0");
}
else{
cal.number = true;
String displayText1 = cal.txt.getText();
if (cal.equalOp.equals("=")) {
opp.setTotal(displayText1);
}
else if(operand.equals("cos")){
if(cal.degPressed){
opp.cOsDeg(displayText1);
}
else
opp.cOs(displayText1);
}
else if(operand.equals("sin")){
if(cal.degPressed){
opp.sInDeg(displayText1);
}
else
opp.sIn(displayText1);
}
else if(operand.equals("tan")){
if(cal.degPressed){
opp.tAnDeg(displayText1);
}
else
opp.tAn(displayText1);
}
cal.txt.setText("" + opp.getTotalString());
operand = e.getActionCommand();
}
}
}
}
太多的代碼閱讀。不要使用'setBounds（）'來定位和調整組件的大小。使用佈局管理器。另外，一個彈出窗口應該是一個JDialog，而不是一個JFrame。如果你解決了這兩個問題，那麼我可能會在稍後看看這個問題。 – camickr 2013-04-06 15:33:06