所以我想知道如何在一个类中分离事件并在另一个类中拥有GUI代码,而他们彼此没有直接的知识。我最近只在一个类中工作,我一直在将 GUI 代码和侦听器放在 start 方法中。
这是 IV'e 到目前为止所做的,但按钮剂量不起作用:
图形用户界面类:
package application;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
public class GUI extends Application {
Button btn1 = new Button("press me");
@Override
public void start(Stage primaryStage) {
try {
BorderPane root = new BorderPane();
Scene scene = new Scene(root,400,400);
root.setCenter(btn1);
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
}
控制器类:
package application;
import javafx.event.Event;
import javafx.event.EventHandler;
public class Control implements EventHandler<Event>{
GUI gui;
public Control(GUI gui) {
this.gui = gui;
}
@Override
public void handle(Event event) {
Object cmd = event.getSource();
if(gui.btn1.equals(cmd)){
System.out.println("your pressed btn1");
}
}
}
主类:
package application;
public class Main extends GUI {
public static void main(String[] args) {
launch(args);
GUI gui = new GUI();
Control control = new Control(gui);
}
}
将控件类设置为按钮的事件处理程序。
button.setOnAction(new Control(this )) ;