Pass Variable to another Controller - javafx

Question

Hello I need to pass The User and Pass Values to another Controller:
like this AdminController ->UserController.
In my code I have This in AdminController:
private TextField fusuario;
#FXML
private PasswordField fcontrasena;
String a;
String b;
public void captura() {
a=fusuario.getText().toString();
System.out.println("el usuario es x:"+a);
b=fcontrasena.getText().toString();
System.out.println("la contraseña es x:"+b);
}
public String setFusuario(String a) {
this.fusuario.setText(a);
return a;
}
public String setFcontrasena(String b) {
this.fcontrasena.setText(b);
return b;
}
This is in my UserController:
Stage administrador=new Stage();
FXMLLoader carga = new FXMLLoader(getClass().getResource("Admin.fxml"));
Parent StackPane =(Parent) carga.load();
AdminScreenController control = carga.<AdminScreenController>getController();
control.deshabilitarespuesta();
Scene scene = new Scene(StackPane);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
administrador.setScene(scene);
administrador.setTitle("AdminScreen");
Stage userstage=(Stage)comentarios.getScene().getWindow();
userstage.hide();
administrador.show();
How i Pass this Values, some help or orientation?

Answer 1

This is easy you need to declare a static variable like this in the FIRST Controller
static String alertTYPE;
Then in our ERROR checking code we give alertTYPE a value
if(txtAmount.getLength() == 0){
alertTYPE = "1";
customAlert();
txtAmount.requestFocus();
return;
}
Now we call customAlert() method still in the same Controller class
Her is the customAlert method code
public void customAlert() throws IOException{
// This method displays the MODAL Alert alert.fxml and it is controlled by AlertController
// =========================================================================================
alertPane = FXMLLoader.load(getClass().getResource("alert.fxml"));// pane you are GOING TO
//Scene Sscene = new Scene(merrorPane, 600, 400);
// NO NEED TO RE-SIZE but this is code to change size
Scene Mscene = new Scene(alertPane);
Mstage = new Stage();
Mstage.initStyle(StageStyle.UNDECORATED);
Mstage.setResizable(false);
Mstage.initModality(Modality.APPLICATION_MODAL);
Mstage.setScene(Mscene);
Mstage.showAndWait();
}
Here in the AlertController we make use of the alertTYPE value
#Override
public void initialize(URL url, ResourceBundle rb) {
if(alertTYPE.equals("1")){
lblMessage.setText("Enter "+type+" Amount");
}else if(alertTYPE.equals("2")){
You need to be sure the Controller you are going to imports the static variable alertTYPE like this
import static checkbook.CBManagerController.alertTYPE;
This was a long way around but we hope you get the idea
One word of caution once static variables are declared and given a value that value is retained until a new value is given to the variable or you set it to nothing like this for a String alertTYPE = ""; With great power comes great responsibility ha ha