问题描述
我正在构建一个应用程序，该应用程序将输入作为字符串接收，并将它们传递给存储我的方法以返回为int / numbers的另一个类。在主GUI窗口中，我可以将其显示为textArea。我创建另一个类，当单击一个按钮时，该类将打开一个新窗口。我可以获得显示它的方法，但是除非首先打开新窗口，然后按另一个按钮显示结果，否则无法传递用户输入的任何内容。
理想情况下，我想当我按下“提交弹出”按钮时，会打开新窗口并显示结果。
GUI类
//The declaration of my textArea results are displayed in the main window
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(22,354,230);
contentPane.add(scrollPane);
JTextArea psuArea = new JTextArea();
scrollPane.setViewportView(psuArea);
PrintStream printStream = new PrintStream(new CustomOutputStream(psuArea));
System.setout(printStream);
System.setErr(printStream);
JButton popUp = new JButton("Submit Pop");
popUp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pw ok = new pw();
ok.newScreen(in,cpuBrand,cpuLine,gpuBrand,gpuLine,flash,platter,sata,cd,fan);
}
});
//The button that calls my method and passes the variables entered to it.
JButton btnAdvanced = new JButton("Advanced Results");
btnAdvanced.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pcp.displayC(in,fan);
}
});
结果窗口类
package pcbuilder;
import java.awt.EventQueue;
import java.io.PrintStream;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JLabel;
public class pw {
private JFrame framePU;
pccalc pcp = new pccalc("");
/**
* Launch the application.
*/
public void newScreen(String n,String cb,String cl,String gb,String gl,String fs,String ss,String sa,String fq,String cf) {
EventQueue.invokelater(new Runnable() {
public void run() {
try {
pw window = new pw();
window.framePU.setVisible(true);
} catch (Exception e) {
e.printstacktrace();
}
}
});
}
/**
* Create the application.
*/
public pw() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
framePU = new JFrame();
framePU.setBounds(100,100,450,348);
framePU.setDefaultCloSEOperation(JFrame.disPOSE_ON_CLOSE);
framePU.getContentPane().setLayout(null);
JLabel lblNewLabel = new JLabel("New label");
lblNewLabel.setBounds(182,6,61,16);
framePU.getContentPane().add(lblNewLabel);
JTextArea psuArea = new JTextArea();
psuArea.setBounds(6,26,438,246);
framePU.getContentPane().add(psuArea);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(22,230);
PrintStream printStream = new PrintStream(new CustomOutputStream(psuArea));
System.setout(printStream);
System.setErr(printStream);
}
}
方法类
public void displayC(String n,String cf) {
//When called in GUI class total wattage is correct. I may need to modify something in my Results or GUI class to have total wattage display correctly in the popup.
curWatt = cpu + cpuO + mobo + gpu + fastStore + slowStore + store + exStore + fan + sound;
System.out.printf("%nBuild Name: %s",buildName);
System.out.printf("%ncpu - %s %s: %d",cb,cl,cpu);
System.out.printf("%ncpu OC Needed: %d",cpuO);
System.out.printf("%nmotherboard: %d",mobo);
System.out.printf("%nGPU - %s %s: %d",gb,gl,gpu);
System.out.printf("%nSSD/NVME - %s: %d",fs,fastStore);
System.out.printf("%nHDD - %s: %d",ss,slowStore);
System.out.printf("%nUnused Sata/NVME - %s: %d",sa,store);
System.out.printf("%nCD/DVD/BlueRay - %s: %d",fq,exStore);
System.out.printf("%nFans - %s: %d",cf,fan);
System.out.printf("%nOverhead for Sound: %d",sound);
System.out.printf("%nTotal Estimated Wattage: %d%n",curWatt);
}
有什么想法吗？
编辑：多亏了答案，我得以使代码正常工作。这是我用来使其正常工作的凌乱代码。
公共类pw {
test nt = new test();
private JFrame framePU;
JLabel lblNewLabel = new JLabel("New label");
JScrollPane scrollPane_1 = new JScrollPane();
JTextArea psuArea = new JTextArea();
PrintStream printStream = new PrintStream(new CustomOutputStream(psuArea));
JScrollPane scrollPane = new JScrollPane();
pccalc pcp = new pccalc("");
/**
* Launch the application.
*/
public void newScreen(String n,String cf) {
EventQueue.invokelater(new Runnable() {
public void run() {
String in = n;
String cpuBrand = cb;
String cpuLine = cl;
String gpuBrand = gb;
String gpuLine = cl;
String flash = fs;
String platter = ss;
String sata = sa;
String cd = fq;
String fan = cf;
try {
lblNewLabel.setText("A different label");
pcp.buildName(in);
if (pcp.cpuBrand(cb) == true) {
pcp.amdLine(cl);
} else {
pcp.intelLine(cl);
}
if (pcp.gpuBrand(gb) == true) {
pcp.graphAmd(gl);
} else {
pcp.graphNvidia(gl);
}
pcp.driveS(fs);
pcp.driveH(ss);
pcp.driveF(fq);
pcp.driveA(sa);
pcp.displayC(in,fan);
framePU.setVisible(true);
} catch (Exception e) {
e.printstacktrace();
}
}
});
}
仍然有些混乱，但是它可以按照我想要的方式工作，现在我可以继续研究如何添加保存功能了。
解决方法
您将各种数据传递到newScreen类的pw方法中。但是您没有做任何事情。更糟糕的是，对于您当前的设计， 确实没有任何用处，因为所有GUI组件的声明都隐藏在initialize方法内部，其中newScreen无法到达他们。
您需要做的第一件事是将GUI组件的声明从initialize中拉出，并放入pw类顶层的成员变量中，其他类成员（例如{ {1}}方法）可以访问它们：
newScreen(...)现在public class pw {
private JFrame framePU;
private JLabel lblNewLabel = new JLabel("New label");
private JTextArea psuArea = new JTextArea();
private JScrollPane scrollPane = new JScrollPane();
pccalc pcp = new pccalc("");
// ....
private void initialize() {
framePU = new JFrame();
framePU.setBounds(100,100,450,348);
framePU.setDefaultCloseOperation(
JFrame.DISPOSE_ON_CLOSE);
framePU.getContentPane().setLayout(null);
lblNewLabel.setBounds(182,6,61,16);
framePU.getContentPane().add(lblNewLabel);
psuArea.setBounds(6,26,438,246);
framePU.getContentPane().add(psuArea);
scrollPane.setBounds(22,354,230);
PrintStream printStream = new PrintStream(new CustomOutputStream(psuArea));
System.setOut(printStream);
System.setErr(printStream);
}
}
实际上可以对传递给它的数据做一些有用的事情-即，将其显示在newScreen窗口的组件中：
pw