JtextField nejde priradit AbstractAction – Java – Fórum – Programujte.com

Zdravim, snazim se udelat jednoduchy program, ktery prepise text z textfieldu do labelu.

Protoze potrebuju opisovat po praci s  vice ovladacimi prvky, tak to asi musim resit akci.

Kdyz priradim akci buttonu, neni problem. Kdyz ji ale dam textfieldu, tak to nic nedela. Pritom kdyz textfildu pridam KeyListener(keyReleased) tak to funguje.

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class Okno {

	private JFrame frame;
	private JTextField textField;
	JLabel lblNewLabel;

	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Okno window = new Okno();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	public Okno() {
		initialize();
	}

	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 248, 158);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		
		Action lblWrite = new AbstractAction("opsat text") {			
			@Override
			public void actionPerformed(ActionEvent e) {
				lblNewLabel.setText(textField.getText());				
			}
		};
		
		textField = new JTextField();
		/* //funguje
		textField.addKeyListener(new KeyAdapter() {
			@Override
			public void keyReleased(KeyEvent e) {
				lblNewLabel.setText(textField.getText());
			}
		});
		*/
		textField.setBounds(10, 11, 196, 20);
		textField.setAction(lblWrite);
		frame.getContentPane().add(textField);
		textField.setColumns(10);
		
		JButton btnNewButton = new JButton("New button");
		btnNewButton.setAction(lblWrite);
		btnNewButton.setBounds(10, 42, 196, 23);
		frame.getContentPane().add(btnNewButton);
		
		lblNewLabel = new JLabel("New label");
		lblNewLabel.setBounds(10, 76, 196, 14);
		frame.getContentPane().add(lblNewLabel);
	}
}

Poradite mi prosim, kde delam chyu a jak ji opravit?

Zislo by sa napisat, co od daneho kodu chces aby to robilo?

#2 sleepy
Aby prubeznym psanim do textfieldu dochazelo k napsani aktualniho obsahu textfieldu do labelu. Pri rucnim kliknuti na button to musi taky prepsat textfield do labelu.

#3 martin
Uz mi to funguje:

import java.awt.EventQueue;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class Okno {

	private JFrame frame;
	private JTextField textField;
	JLabel lblNewLabel;

	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					Okno window = new Okno();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	public Okno() {
		initialize();
	}

	private void initialize() {
		frame = new JFrame();
		frame.setBounds(100, 100, 248, 158);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		
		final Action lblWrite = new AbstractAction("opsat text") {			
			@Override
			public void actionPerformed(ActionEvent e) {
				lblNewLabel.setText(textField.getText());				
			}
			
		};
		
		textField = new JTextField();
		textField.addKeyListener(new KeyAdapter() {
			@Override
			public void keyReleased(KeyEvent e) {
				lblWrite.actionPerformed(new ActionEvent(this, (int) ActionEvent.KEY_EVENT_MASK, null));
			}
		});

		textField.setBounds(10, 11, 196, 20);
		textField.setAction(lblWrite);
		frame.getContentPane().add(textField);
		textField.setColumns(10);
		
		JButton btnNewButton = new JButton("New button");
		btnNewButton.setAction(lblWrite);
		btnNewButton.setBounds(10, 42, 196, 23);
		frame.getContentPane().add(btnNewButton);
		
		lblNewLabel = new JLabel("New label");
		lblNewLabel.setBounds(10, 76, 196, 14);
		frame.getContentPane().add(lblNewLabel);
	}
}