JavaFX Button不可点击

时间:2015-10-16 20:12:24

标签: java user-interface javafx

所以我有这个按钮。它可以用回车键按下,并可以通过Tab键选择它,但不能点击它,并且就光标而言似乎不存在。我不相信任何东西都可以覆盖它,但大部分内容都是如此,因为使用相同代码创建的按钮是可点击的。

public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
    primaryStage.setTitle("Mortgage Calculator");

    GridPane pane = new GridPane();
    pane.setAlignment(Pos.CENTER);
    pane.setHgap(10);
    pane.setVgap(10);
    pane.setPadding(new Insets(25, 25, 25, 25));
    Scene scene = new Scene(pane, 350, 325);

    Text sceneTitle = new Text("Mortgage Calculator");
    sceneTitle.setFont(Font.font("Arial", FontWeight.NORMAL, 20));
    pane.add(sceneTitle, 0, 0, 2, 1);
    Label total = new Label("Value of your Mortgage:");
    pane.add(total, 0, 1);
    final TextField totalField = new TextField();
    pane.add(totalField, 1, 1);
    Label percent = new Label("% Interest:");
    pane.add(percent, 0, 2);
    final TextField percentField = new TextField();
    pane.add(percentField, 1, 2);
    Label time = new Label("Length of mortgage:");
    pane.add(time, 0, 3);
    final TextField timeField = new TextField();
    pane.add(timeField, 1, 3);
    final Text amountOwed = new Text();
    pane.add(amountOwed, 1, 7);
    final Text payment = new Text();
    pane.add(payment, 1, 8);

    Button calculateButton = new Button("Calculate");
    HBox hbox1 = new HBox(10);
    hbox1.setAlignment(Pos.BOTTOM_RIGHT);
    hbox1.getChildren().add(calculateButton);
    calculateButton.setOnAction(new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent event) {
            double principal = Double.parseDouble(totalField.getText());
            double interest = (Double.parseDouble(percentField.getText()) / 100) / 12;
            int time = Integer.parseInt(timeField.getText());
            int numPayment = time * 12;

            double monthlyPayment = (principal * (interest * (Math.pow((interest + 1), numPayment)))) / (Math.pow((1 + interest), numPayment) - 1);
            //double totalPayment = ;
            //amountOwed.setText("Amount owed is: " + totalPayment);
            payment.setText("Monthly payment is: $" +  (int)Math.ceil(monthlyPayment));
        }
    });
    pane.add(hbox1, 1, 4);

    Button clearButton = new Button("Clear");
    HBox hbox = new HBox(10);
    hbox.setAlignment(Pos.BOTTOM_LEFT);
    hbox.getChildren().add(clearButton);
    pane.add(hbox, 1, 4);
    EventHandler<ActionEvent> handler1 = new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent event) {
            totalField.setText("");
            percentField.setText("");
            timeField.setText("");
            payment.setText("");
        }
    };
    clearButton.setOnAction(handler1);
    primaryStage.setScene(scene);
    primaryStage.show();
}

}

1 个答案:

答案 0 :(得分:6)

mouseTransparent问题

您将“计算”按钮放在HBox中,然后在HBox上调用setMouseTransparent(true)。这样的调用将禁用HBox 及其所有孩子的鼠标输入。链接的Javadoc中记录了此行为:

  

如果为true,则此节点(及其所有子节点)对鼠标事件完全透明。选择鼠标事件的目标时,将mouseTransparent设置为true的节点及其子树将不予考虑。

您不需要setMouseTransparent(true)电话;只需删除它,“计算”按钮就可以按照您的预期进行点击。

calc

重叠组件问题

您还需要确保不要将某些组件与其他组件重叠,否则只有顶级组件可以单击。在您的情况下,包含“清除”按钮的HBox与“计算”按钮重叠。

所以改变:

pane.add(hbox, 1, 4);

要:

pane.add(clearButton, 1, 4);

调试协助

您可以通过调用layout.setStyle(“ - fx-background-color:green;”)来调试布局,以显示布局的范围,或者使用ScenicView