Question

swt窗体间怎么进行数据交互？下面一个简单例子，怎么把str传输到另一个窗体显示？同一个包和不同的包呢？

if(text.getText().equals("111")) str = "登录成功！";
else str = "登录失败！";
将str传到另一个窗口显示。

Answer 1

public class NoteFrame extends JFrame {

private JTextField txt1;

private JButton btn;

public NoteFrame() {
txt1 = new JTextField(10);
btn = new JButton("open subFrame");
btn.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {
new SearchFrame(txt1);
}

});

add(txt1, BorderLayout.NORTH);
add(btn, BorderLayout.CENTER);

setTitle("NoteFrame");
setSize(400, 200);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
new NoteFrame();
}
}

class SearchFrame extends JFrame {

private JButton btn;
private JTextField txt;

public SearchFrame(JTextField txt) {
this.txt = txt;
btn = new JButton("ok");
btn.addActionListener(new BtnAction(this.txt));

this.add(this.btn, BorderLayout.CENTER);

setTitle("SearchFrame");
setSize(400, 200);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

class BtnAction implements ActionListener {

private JTextField txt;

public BtnAction(JTextField txt) {
this.txt = txt;
}

public void actionPerformed(ActionEvent e) {
this.txt.setText("hello world");
}

}
}