Value Change Listener for Javafx's Textfield
I Would Like to Add a Kind of Listener to My Javafx's Textfield Which When Ever a User Changes the Value of the Textfield, the Application Prints Something on...
I would like to add a kind of listener to my JavaFX's TextField which when ever a user changes the value of the TextField, the Application prints something on the console.
I've searched and i find the following very similar question : Value Change Listener to JTextField
The answer of mentioned question is very clear and efficient, but unfortunately it is only useful for JTextField ( Not JavaFX's TextField) because it says you should use DocumentListener like this:
// Listen for changes in the text
textField.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
warn();
}
public void removeUpdate(DocumentEvent e) {
warn();
}
public void insertUpdate(DocumentEvent e) {
warn();
}
but in JavaFX's TextFields you are not able to do it. So? What is the solution?
(describing with code can be very good but if it is not possible, any hint will be appreciated)
1 Answer
Add a listener to the TextField's textProperty:
TextField textField = new TextField();
textField.textProperty().addListener((observable, oldValue, newValue) -> {
System.out.println("textfield changed from " + oldValue + " to " + newValue);
});
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
