Question

您好我真的希望有人可以帮助我。我有一个选择框和一个用于打印国家桌子的方法。 pdfCountry需要一个国家名称作为String来做某事。

代码方法：

public void pdfCountry(String countryName) {
         HashMap<String, String> country = new HashMap<String, String>();
         HashMap<String, String> co2String = new HashMap<String, String>();
         for( Integer key2 : csv.co2.keySet()) {

             co2String.put(key2.toString(), csv.co2.get(key2).toString());
         }
         for(Integer key: csv.yearlyTempByCountry.get(countryName).keySet()) {
             country.put(key.toString(), csv.yearlyTempByCountry.get(countryName).get(key).toString());
         }
         pdf.printPDF(country, co2String);
     }

代码：choicebox

private void getChoice(ChoiceBox<String> choicebox) {
            // TODO Auto-generated method stub
            Stage primaryStage = new Stage();
            primaryStage.setTitle("Länder Liste");
            Label land= new Label("Welches Land soll exportiert werden?");
            Button test= new Button("pdf");
            VBox auswahl = new VBox();
            choicebox= new ChoiceBox<>();
            choicebox.getItems().addAll("United Arab Emirates","Angola","Argentina", "Austria","Australia", "Azerbaijan","Bosnia And Herzegovin", "Bangladesh", "Belgium", "Burkina Faso", "Bulgaria", "Burundi","Benin","Brunei Darussalam","Bolivia","Brazil", "Bahamas", "Bhutan","Botswana","Belarus", "Belize","Canada","Congo (Democratic Republic Of The)");


test.setOnAction(e -> pdfCountry("Germany")); // works perfectly fine

但我只是想在应用中选择一个国家/地区，pdfCountry就是正确的国家自动。例如：test.setOnAction(e -> pdfCountry(choicebox.getvalue())); 总是最后的错误，我不知道如何解决它。

提前谢谢顺便说一句，我对编码很新，在网上找不到任何解决方案。

带选择框的Javafx按钮

0 个答案: