Question

我意识到这是一个非常基本的问题，但我只是开始专门学习GUI和JavaFX。我有一个标签列表及其相应的文本输入字段和一个计算结果的按钮。我想将它们全部对齐：

标签..........文本字段

.........按钮..........

在窗格本身上居中对齐。我已尝试将对齐设置为居中，但它仅适用于水平轴。我尝试过使用VBox以及HBox，但它们提供相同的输出。我甚至尝试过使用不同值的setPadding（0,0,0,0）但我没有得到我想要的结果。我发现了类似的问题（没有回答我的问题），甚至到过https://docs.oracle.com/javase/8/javafx/api/javafx/scene/layout/FlowPane.html 但无济于事。我意识到计算按钮只会添加值，但我还没有达到那么远，我想我知道该怎么做才能让它做我想做的事，只是在GUI布局上遇到麻烦。任何帮助，将不胜感激。下面是我玩了几个小时后到目前为止的代码：

 package javafxfincalc;

 import javafx.application.Application;
 import javafx.geometry.Pos;
 import javafx.scene.Scene;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
 import javafx.scene.control.TextField;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.FlowPane;
 import javafx.scene.layout.HBox;   // may not need
 import javafx.scene.layout.VBox;
 import javafx.stage.Stage;
 import javafx.geometry.Insets;
 import javafx.geometry.Orientation;
 // a lot of classes must be imported from Java FX to make this all work correctly

 public class JavaFXFinCalc extends Application {
// all applications will be a child class of Application when made with Java FX

 public static void main(String[] args) {

Application.launch(args);
// this allows the program to start
 }@Override

public void start(Stage primaryStage) throws Exception {
// this will use a standard exception handler

FlowPane pane = new FlowPane(Orientation.VERTICAL);
 pane.setHgap(5);
 pane.setAlignment(Pos.CENTER);
 pane.setPadding(new Insets(0,0,0,0)); // set top, right, bottom, left
 // this allows input fields to be placed in the window

 TextField tf1 = new TextField("00.00");
 TextField tf2 = new TextField("0");
 TextField tf3 = new TextField("0.00%");
 TextField my_result = new TextField("You cannot type here");
 // these are the individual fields for input, you can set the default text

 my_result.setEditable(false);
 // keeps user from changing this text field

 tf1.setPrefColumnCount(14);
 tf2.setPrefColumnCount(14);
 tf3.setPrefColumnCount(14);
 my_result.setPrefColumnCount(14);
 // this sets the number of spaces in the text fields

 Label l1 = new Label("Money used in investment: ");
 Label l2 = new Label("Years: ");
 Label l3 = new Label("Annual Interest Rate: ");
 Label l4 = new Label("Final Financial Worth: ");
 // these labels are set and used before the text fields as show below

 pane.getChildren().addAll(l1, tf1, l2, tf2, l3, tf3, l4, my_result);
 // call on the labels and text fields to be placed into the window

 VBox vBox = new VBox();
 Button calc_button = new Button("Calculate it!");
 // create a box to put the button in and name the button

 vBox.setAlignment(Pos.CENTER);
 vBox.getChildren().addAll(calc_button);

 BorderPane borderPane = new BorderPane();
 borderPane.setCenter(pane);
 borderPane.setBottom(vBox);
 BorderPane.setAlignment(vBox,Pos.CENTER);

 Scene scene = new Scene(borderPane, 500, 500);
 primaryStage.setTitle("Financial Calculator");
 primaryStage.setScene(scene);
 primaryStage.show();

 calc_button.setOnAction(e -> {
 my_result.setText(Double.parseDouble(tf1.getText()) +
 Double.parseDouble(tf2.getText()) + "");
 });

 }}

This is the current output, all lines centered

Answer 1

这是最终结果！再次感谢Sedrick！ https://docs.oracle.com/javafx/2/get_started/form.htm

public void start(Stage primaryStage) throws Exception {
// this will use a standard exception handler

GridPane pane = new GridPane();
 pane.setAlignment(Pos.CENTER);
 pane.setHgap(5);
 pane.setVgap(5);
 pane.setPadding(new Insets(25,25,25,25)); // set top, right, bottom, left
 // this allows input fields to be placed in the window

 TextField tf1 = new TextField("00.00");
 TextField tf2 = new TextField("0");
 TextField tf3 = new TextField("0.00%");
 TextField my_result = new TextField("You cannot type here");
 // these are the individual fields for input, you can set the default text

 my_result.setEditable(false);
 // keeps user from changing this text field

 tf1.setPrefColumnCount(14);
 tf2.setPrefColumnCount(14);
 tf3.setPrefColumnCount(14);
 my_result.setPrefColumnCount(14);
 // this sets the number of spaces in the text fields

 Label l1 = new Label("Money used in investment: ");
 Label l2 = new Label("Years: ");
 Label l3 = new Label("Annual Interest Rate: ");
 Label l4 = new Label("Final Financial Worth: ");
 // these labels are set and used before the text fields as show below

 pane.add(l1, 0, 1);
 pane.add(tf1, 1, 1);
 pane.add(l2, 0, 2);
 pane.add(tf2, 1, 2);
 pane.add(l3, 0, 3);
 pane.add(tf3, 1, 3);
 pane.add(l4, 0, 4);
 pane.add(my_result, 1, 4);
 // call on the labels and text fields to be placed into the window
 // must be done individually so that location and order can be set by column/row

 Button calc_button = new Button("Calculate it!");
 pane.add(calc_button, 1, 5);
 // make a button and put it in the Gridpane

 BorderPane borderPane = new BorderPane();
 borderPane.setCenter(pane);

 Scene scene = new Scene(borderPane, 500, 500);
 primaryStage.setTitle("Financial Calculator");
 primaryStage.setScene(scene);
 primaryStage.show();

 calc_button.setOnAction(e -> {
 my_result.setText("");
 });

}

在JavaFX中设置标签和文本字段对齐

1 个答案: