使用 JavaFX 为 ATM 构建 GUI 但无法让初级阶段改变场景
Using JavaFX to build a GUI for an ATM but having trouble getting primary stage to change scene
尝试在 ATM 上使用事件处理程序同步特定按钮推送以前进到下一个 "screen"：隐藏舞台，使用按钮推送创建的场景更新舞台，然后重新显示阶段。
我很好奇这个过程是否只能进行得如此深入，因为我的 newCheckingsAccounts 按钮没有做任何应该做的事情，但我可以在那个页面上倒退，我或多或少地使用了相同的代码来尝试继续前进。
import java.awt.Insets;
import java.util.ArrayList;
import java.util.Scanner;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class TestAccount extends Application {
//creates arrays that will store the accounts
ArrayList<Account> Checking = new ArrayList<Account>();
ArrayList<Integer> Savings = new ArrayList<Integer>();
//declares variables
double interest = 0;
double interestRate = 0;
double balance = 0;
double credit = 0;
double initialBalance = 0;
double feeChargedPerTransaction = 0;
Button btMain = new Button("Go Back to Main Menu");
Button btNewAccount = new Button("Make New Account");
Button btExistingAccount = new Button("Access an Existing Account");
Button btNewCheckings = new Button("Make New Checkings");
Button btNewSavings = new Button("Make New Savings");
@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
// Hold two buttons in an HBox
HBox hBox = new HBox();
hBox.setSpacing(10);
hBox.setAlignment(Pos.CENTER);
Button btGoToAccounts = new Button("Go To Accounts Page");
Button btEnd = new Button("End Program");
hBox.getChildren().add(btGoToAccounts);
hBox.getChildren().add(btEnd);
BorderPane borderPane = new BorderPane();
borderPane.setBottom(hBox);
BorderPane.setAlignment(hBox, Pos.CENTER);
// Create a scene and place it in the stage
Scene scene = new Scene(borderPane, 500, 300);
primaryStage.setTitle("Bank of America"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
// creates and registers handler and specifies action for button to go to accounts page
btGoToAccounts.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox1 = new HBox();
hBox1.setSpacing(10);
hBox1.setAlignment(Pos.CENTER);
hBox1.getChildren().add(btNewAccount);
hBox1.getChildren().add(btExistingAccount);
hBox1.getChildren().add(btMain);
BorderPane borderPane1 = new BorderPane();
borderPane1.setBottom(hBox1);
BorderPane.setAlignment(hBox1, Pos.CENTER);
Scene scene1 = new Scene(borderPane1, 500, 300);
primaryStage.setTitle("Accounts Page"); // Set the stage title
primaryStage.setScene(scene1); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
// creates and registers handler and specifies action for button to go to create new accounts page
btNewAccount.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox2 = new HBox();
hBox2.setSpacing(10);
hBox2.setAlignment(Pos.CENTER);
Button btNewCheckings = new Button("Make New Checkings");
Button btNewSavings = new Button("Make New Savings");
hBox2.getChildren().add(btNewCheckings);
hBox2.getChildren().add(btNewSavings);
hBox2.getChildren().add(btMain);
BorderPane borderPane2 = new BorderPane();
borderPane2.setBottom(hBox2);
BorderPane.setAlignment(hBox2, Pos.CENTER);
Scene scene2 = new Scene(borderPane2, 800, 300);
primaryStage.setTitle("New Accounts"); // Set the stage title
primaryStage.setScene(scene2); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
// THIS IS THE BUTTON THAT DOESN'T REGISTER AS BEING CLICKED...havent done the newSavingsAccount button either.want it to take me to new scene where i enter in new account info hit submit and then take me back to the main menu ("scene")
btNewCheckings.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
HBox hbox3 = new HBox();
Scene scene3 = new Scene(hbox3, 800, 300);
primaryStage.setTitle("Test"); // Set the stage title
primaryStage.setScene(scene3); // Place the scene in the stage
//the Name text field
final TextField name = new TextField();
name.setPromptText("Enter the desired account name which will be used under the access an existing account screen later");
name.setPrefColumnCount(10);
name.getText();
hbox3.getChildren().add(name);
//Defining the initial balance/fee text fields
final TextField initialBalance = new TextField();
final TextField fee = new TextField();
initialBalance.setPromptText("Enter your desired initial balance as a double.");
fee.setPromptText("Enter the agreed upon fee per transaction as a double.");
initialBalance.setPrefColumnCount(15);
fee.setPrefColumnCount(15);
fee.getText();
hbox3.getChildren().add(fee);
initialBalance.getText();
hbox3.getChildren().add(initialBalance);
//Defining the Submit button
Button accountCreation = new Button("Create the Account");
hbox3.getChildren().add(accountCreation);
//Defining the Clear button
Button clear = new Button("Clear");
hbox3.getChildren().add(clear);
primaryStage.show(); // Display the stage
//Setting an action for the Submit button
accountCreation.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
if ((initialBalance.getText() != null && !initialBalance.getText().isEmpty())) {
CheckingAccount newMember = new CheckingAccount();
newMember.setInitialBalance(Double.parseDouble(initialBalance.toString()));
newMember.setFee((Double.parseDouble(fee.toString())));
Checking.add(newMember);
} else {
System.out.println("no member added");
}
}
});
//Setting an action for the Clear button
clear.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
name.clear();
initialBalance.clear();
}
});
}
});
// creates and registers handler and specifies action for end button to close the stage
btEnd.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.close();
}
});
// creates and registers handler and specifies action for main menu button to go to first scene
btMain.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
primaryStage.setTitle("Bank of America"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
}
/**
* The main method is only needed for the IDE with limited
* JavaFX support. Not needed for running from the command line.
*/
public static void main(String[] args) {
launch(args);
}
}
我认为删除 btNewAccount.setOnAction() 中两个按钮的覆盖应该可以解决您的问题：
// creates and registers handler and specifies action for button to go
// to create new accounts page
btNewAccount.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox2 = new HBox();
hBox2.setSpacing(10);
hBox2.setAlignment(Pos.CENTER);
// ############### removed this ###################
//Button btNewCheckings = new Button("Make New Checkings");
//Button btNewSavings = new Button("Make New Savings");
hBox2.getChildren().add(btNewCheckings);
hBox2.getChildren().add(btNewSavings);
hBox2.getChildren().add(btMain);
BorderPane borderPane2 = new BorderPane();
borderPane2.setBottom(hBox2);
BorderPane.setAlignment(hBox2, Pos.CENTER);
Scene scene2 = new Scene(borderPane2, 400, 300);
primaryStage.setTitle("New Accounts"); // Set the stage title
primaryStage.setScene(scene2); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
如果你想在一个Button的ActionHandler中实例化，你需要在同一个Block中声明它是ActionHandler。
按照您的方式（启动方法中的 ActionHandler），只有在您使用已在顶部初始化的 class 属性（按钮）时，它才会起作用。
希望我能帮上忙:)
编辑：这个项目的一个好技巧可能是使用 JavaFX 查看 FXML 文件。这可能对您有帮助：http://code.makery.ch/library/javafx-8-tutorial/part1/
尝试在 ATM 上使用事件处理程序同步特定按钮推送以前进到下一个 "screen"：隐藏舞台，使用按钮推送创建的场景更新舞台，然后重新显示阶段。
我很好奇这个过程是否只能进行得如此深入，因为我的 newCheckingsAccounts 按钮没有做任何应该做的事情，但我可以在那个页面上倒退，我或多或少地使用了相同的代码来尝试继续前进。
import java.awt.Insets;
import java.util.ArrayList;
import java.util.Scanner;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class TestAccount extends Application {
//creates arrays that will store the accounts
ArrayList<Account> Checking = new ArrayList<Account>();
ArrayList<Integer> Savings = new ArrayList<Integer>();
//declares variables
double interest = 0;
double interestRate = 0;
double balance = 0;
double credit = 0;
double initialBalance = 0;
double feeChargedPerTransaction = 0;
Button btMain = new Button("Go Back to Main Menu");
Button btNewAccount = new Button("Make New Account");
Button btExistingAccount = new Button("Access an Existing Account");
Button btNewCheckings = new Button("Make New Checkings");
Button btNewSavings = new Button("Make New Savings");
@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
// Hold two buttons in an HBox
HBox hBox = new HBox();
hBox.setSpacing(10);
hBox.setAlignment(Pos.CENTER);
Button btGoToAccounts = new Button("Go To Accounts Page");
Button btEnd = new Button("End Program");
hBox.getChildren().add(btGoToAccounts);
hBox.getChildren().add(btEnd);
BorderPane borderPane = new BorderPane();
borderPane.setBottom(hBox);
BorderPane.setAlignment(hBox, Pos.CENTER);
// Create a scene and place it in the stage
Scene scene = new Scene(borderPane, 500, 300);
primaryStage.setTitle("Bank of America"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
// creates and registers handler and specifies action for button to go to accounts page
btGoToAccounts.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox1 = new HBox();
hBox1.setSpacing(10);
hBox1.setAlignment(Pos.CENTER);
hBox1.getChildren().add(btNewAccount);
hBox1.getChildren().add(btExistingAccount);
hBox1.getChildren().add(btMain);
BorderPane borderPane1 = new BorderPane();
borderPane1.setBottom(hBox1);
BorderPane.setAlignment(hBox1, Pos.CENTER);
Scene scene1 = new Scene(borderPane1, 500, 300);
primaryStage.setTitle("Accounts Page"); // Set the stage title
primaryStage.setScene(scene1); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
// creates and registers handler and specifies action for button to go to create new accounts page
btNewAccount.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox2 = new HBox();
hBox2.setSpacing(10);
hBox2.setAlignment(Pos.CENTER);
Button btNewCheckings = new Button("Make New Checkings");
Button btNewSavings = new Button("Make New Savings");
hBox2.getChildren().add(btNewCheckings);
hBox2.getChildren().add(btNewSavings);
hBox2.getChildren().add(btMain);
BorderPane borderPane2 = new BorderPane();
borderPane2.setBottom(hBox2);
BorderPane.setAlignment(hBox2, Pos.CENTER);
Scene scene2 = new Scene(borderPane2, 800, 300);
primaryStage.setTitle("New Accounts"); // Set the stage title
primaryStage.setScene(scene2); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
// THIS IS THE BUTTON THAT DOESN'T REGISTER AS BEING CLICKED...havent done the newSavingsAccount button either.want it to take me to new scene where i enter in new account info hit submit and then take me back to the main menu ("scene")
btNewCheckings.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
HBox hbox3 = new HBox();
Scene scene3 = new Scene(hbox3, 800, 300);
primaryStage.setTitle("Test"); // Set the stage title
primaryStage.setScene(scene3); // Place the scene in the stage
//the Name text field
final TextField name = new TextField();
name.setPromptText("Enter the desired account name which will be used under the access an existing account screen later");
name.setPrefColumnCount(10);
name.getText();
hbox3.getChildren().add(name);
//Defining the initial balance/fee text fields
final TextField initialBalance = new TextField();
final TextField fee = new TextField();
initialBalance.setPromptText("Enter your desired initial balance as a double.");
fee.setPromptText("Enter the agreed upon fee per transaction as a double.");
initialBalance.setPrefColumnCount(15);
fee.setPrefColumnCount(15);
fee.getText();
hbox3.getChildren().add(fee);
initialBalance.getText();
hbox3.getChildren().add(initialBalance);
//Defining the Submit button
Button accountCreation = new Button("Create the Account");
hbox3.getChildren().add(accountCreation);
//Defining the Clear button
Button clear = new Button("Clear");
hbox3.getChildren().add(clear);
primaryStage.show(); // Display the stage
//Setting an action for the Submit button
accountCreation.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
if ((initialBalance.getText() != null && !initialBalance.getText().isEmpty())) {
CheckingAccount newMember = new CheckingAccount();
newMember.setInitialBalance(Double.parseDouble(initialBalance.toString()));
newMember.setFee((Double.parseDouble(fee.toString())));
Checking.add(newMember);
} else {
System.out.println("no member added");
}
}
});
//Setting an action for the Clear button
clear.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
name.clear();
initialBalance.clear();
}
});
}
});
// creates and registers handler and specifies action for end button to close the stage
btEnd.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.close();
}
});
// creates and registers handler and specifies action for main menu button to go to first scene
btMain.setOnAction(new EventHandler<ActionEvent>() {
@Override public void handle(ActionEvent event) {
primaryStage.hide();
primaryStage.setTitle("Bank of America"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
}
/**
* The main method is only needed for the IDE with limited
* JavaFX support. Not needed for running from the command line.
*/
public static void main(String[] args) {
launch(args);
}
}
我认为删除 btNewAccount.setOnAction() 中两个按钮的覆盖应该可以解决您的问题：
// creates and registers handler and specifies action for button to go
// to create new accounts page
btNewAccount.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
primaryStage.hide();
// Hold three buttons in an HBox
HBox hBox2 = new HBox();
hBox2.setSpacing(10);
hBox2.setAlignment(Pos.CENTER);
// ############### removed this ###################
//Button btNewCheckings = new Button("Make New Checkings");
//Button btNewSavings = new Button("Make New Savings");
hBox2.getChildren().add(btNewCheckings);
hBox2.getChildren().add(btNewSavings);
hBox2.getChildren().add(btMain);
BorderPane borderPane2 = new BorderPane();
borderPane2.setBottom(hBox2);
BorderPane.setAlignment(hBox2, Pos.CENTER);
Scene scene2 = new Scene(borderPane2, 400, 300);
primaryStage.setTitle("New Accounts"); // Set the stage title
primaryStage.setScene(scene2); // Place the scene in the stage
primaryStage.show(); // Display the stage
}
});
如果你想在一个Button的ActionHandler中实例化，你需要在同一个Block中声明它是ActionHandler。
按照您的方式（启动方法中的 ActionHandler），只有在您使用已在顶部初始化的 class 属性（按钮）时，它才会起作用。
希望我能帮上忙:)
编辑：这个项目的一个好技巧可能是使用 JavaFX 查看 FXML 文件。这可能对您有帮助：http://code.makery.ch/library/javafx-8-tutorial/part1/