How to use this code in my main class of JavaFX so that I can set maxlength of characters in JavaFX TextField
?
class LimitedTextField extends TextField {
private final int limit;
public LimitedTextField(int limit) {
this.limit = limit;
}
@Override
public void replaceText(int start, int end, String text) {
super.replaceText(start, end, text);
verify();
}
@Override
public void replaceSelection(String text) {
super.replaceSelection(text);
verify();
}
private void verify() {
if (getText().length() > limit) {
setText(getText().substring(0, limit));
}
}
};
My JavaFX main class is given below:
public class TextFiled extends Application {
@Override
public void start(Stage primaryStage) {
final TextField t_fname = new TextField();
StackPane root = new StackPane();
root.getChildren().add(t_fname);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
This is my solution:
public static void addTextLimiter(final TextField tf, final int maxLength) {
tf.textProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(final ObservableValue<? extends String> ov, final String oldValue, final String newValue) {
if (tf.getText().length() > maxLength) {
String s = tf.getText().substring(0, maxLength);
tf.setText(s);
}
}
});
}
See JavaFX 2.2 TextField maxlength and Prefer composition over inheritance?