我一直在尝试了解有关使用 JavaFX 的更多信息,并且在此程序中,我尝试显示已经玩过的 3 x 3 井字游戏。我已经创建了我的 ImageViews 并设置了我想要使用的图像,但是一旦我开始将它们插入到列和行中,我注意到我不能使用同一个两次。我有一个空白空间、一个 X 和一个 O 的图像。一旦我多次使用一个图像,我就会得到一个“运行应用程序时出现异常”。可能是菜鸟的错误,但我们将不胜感激。
package Fresh;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
public class Fresh extends Application {
@Override
public void start(Stage primaryStage) {
//Create a pane and set its properties
GridPane pane = new GridPane();
pane.setAlignment(Pos.CENTER);
pane.setPadding(new Insets(11.5, 12.5, 13.5, 14.5));
pane.setHgap(5.5);
pane.setVgap(5.5);
//imv0 = X image
final ImageView imv0 = new ImageView();
final Image image0 = new Image(Fresh.class.getResourceAsStream("images/x.gif"));
imv0.setImage(image0);
//imv1 = O image
final ImageView imv1 = new ImageView();
final Image image1 = new Image(Fresh.class.getResourceAsStream("images/o.gif"));
imv1.setImage(image1);
//imv2 = empty image
final ImageView imv2 = new ImageView();
final Image image2 = new Image(Fresh.class.getResourceAsStream("images/empty.gif"));
imv2.setImage(image2);
//Place nodes in the pane
pane.add((imv0),0,0);
pane.add((imv1), 1, 0);
//Once I try to use imv0 again "I get an exception while running".
pane.add((imv0),0,1);
//Create a scene and place it in the stage
Scene scene = new Scene(pane);
primaryStage.setTitle("ShowGridPane");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}