笔记记录

编写人：老王
时间：2023-04-5
地点：广州

package javafx.test;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class Main6 extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) {
        Button button1 = new Button("按钮1");
        Button button2 = new Button("按钮2");
        Button button3 = new Button("按钮3");
        Stage stage = new Stage();
        Group group = new Group();
        group.getChildren().add(button1);
        group.getChildren().add(button3);
        group.getChildren().add(button2);
        Scene scene = new Scene(group);
        stage.setScene(scene);
        stage.show();
    }
}

如果用原始的group类去进行布局，就像下面这样，整个界面都是一坨，非常丑。

因此需要手动设置按钮的宽和高才行。

package javafx.test;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class Main6 extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) {
        Button button1 = new Button("按钮1");
        Button button2 = new Button("按钮2");
        Button button3 = new Button("按钮3");
        button1.setLayoutX(0);
        button1.setLayoutY(100);
        button2.setLayoutX(100);
        button2.setLayoutY(100);
        button3.setLayoutX(200);
        button3.setLayoutY(100);
        Stage stage = new Stage();
        Group group = new Group();
        group.getChildren().addAll(button1,button2,button3);
        Scene scene = new Scene(group);
        stage.setScene(scene);
        stage.show();
    }
}

删除组件就要用到下面整个remove才行了：

group.getChildren().addAll(button1,button2,button3);
        group.getChildren().remove(0);

//默认为true,如果成false,那就只能自己设置组件的宽和高
        group.setAutoSizeChildren(true);