Question

javaFX怎么把两个不同的pane加到一个scene中

用java设计这个界面怎么做啊？

Answer 1

这种要并排放置的情况就把一个HBox对象设为Scene的root，然后再把两个panel放到HBox上即可。由于你只是要界面，计算器的计算逻辑我就不实现了，具体代码如下（运行环境：jdk8或以上）：

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.layout.GridPane;

import javafx.scene.layout.HBox;

import javafx.scene.layout.Priority;

import javafx.stage.Stage;

public class TwoPane extends Application {

final static private int BUTTON_WIDTH = 40;

final static private int BUTTON_HEIGHT = 40;

public static void main(String[] args) {

launch(args);

}

@Override

public void start(Stage primaryStage) throws Exception {

primaryStage.setTitle("简易计算器");

Label label = new Label("");

label.setAlignment(Pos.CENTER);

label.setMinWidth(100);

HBox expresssionPanel = new HBox(label);

expresssionPanel.setAlignment(Pos.CENTER);

GridPane keyboardPanel = new GridPane();

for(int i = 1; i <= 9; ++i){

Button btn = new Button(String.valueOf(i));

btn.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

btn.setOnAction(e -> label.setText(label.getText() + btn.getText()));

keyboardPanel.add(btn, (i - 1) % 3, i > 3 ? (i > 6 ? 2 : 1) : 0);

}

Button zero = new Button(String.valueOf("0"));

zero.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

zero.setOnAction(e -> label.setText(label.getText() + zero.getText()));

Button plus = new Button(String.valueOf("+"));

plus.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

plus.setOnAction(e -> label.setText(label.getText() + plus.getText()));

Button minus = new Button(String.valueOf("-"));

minus.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

minus.setOnAction(e -> label.setText(label.getText() + minus.getText()));

Button time = new Button(String.valueOf("*"));

time.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

time.setOnAction(e -> label.setText(label.getText() + time.getText()));

Button divide = new Button(String.valueOf("/"));

divide.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

divide.setOnAction(e -> label.setText(label.getText() + divide.getText()));

Button calc = new Button(String.valueOf("="));

calc.setPrefSize(BUTTON_WIDTH, BUTTON_HEIGHT);

calc.setOnAction(e -> label.setText(label.getText() + calc.getText())/*TODO 计算逻辑代码待完成*/);

keyboardPanel.add(zero, 0, 3);

keyboardPanel.add(plus, 1, 3);

keyboardPanel.add(minus, 2, 3);

keyboardPanel.add(time, 0, 4);

keyboardPanel.add(divide, 1, 4);

keyboardPanel.add(calc, 2, 4);

HBox root = new HBox(expresssionPanel, keyboardPanel);

HBox.setHgrow(expresssionPanel, Priority.ALWAYS);

primaryStage.setScene(new Scene(root));

primaryStage.show();

}

}

-------------效果如下----------------