从另一个包中获取值

我想从“应用程序”包中获取一个值，并将其用于“包”包中，但我的方式不起作用。我希望“包”包中的lblCal具有与“应用程序”包中的loppkcal或lblKcal相同的值。对不起，如果我的代码看起来像狗屎。从另一个包中获取值

我还提到，arvutaNuppVajutus是On Action按钮。

我给代码添加了注释，我的意思是（“应用程序”包在底部有注释）。

package packet; 

import javafx.collections.FXCollections; 

import javafx.fxml.FXML; 
import javafx.scene.control.Button; 
import javafx.scene.control.ComboBox; 
import javafx.scene.control.Label; 
import javafx.scene.control.TextField; 
import javafx.scene.layout.HBox; 
import application.MainControll; 

public class Paevikcontroll { 

@FXML 
private HBox hbboxKast; 

@FXML 
private TextField lisaToit; 

@FXML 
private TextField lisaValk; 

@FXML 
private TextField lisaSysi; 

@FXML 
private TextField lisaRasv; 

@FXML 
private ComboBox cbToiduaine; 

@FXML 
private TextField txtKogus; 

@FXML 
private Label lblCal; 

@FXML 
private Label lblProt; 

@FXML 
private Label lblCarb; 

@FXML 
private Label lblFat; 

private void initialize() { 
    MainControll nr = new MainControll(); 
    lblCal.setText(nr.arvutaNuppVajutus.loppkcal); //Want same value for this as lblKcal or loppkcal has in "application" package. 

} 
}

这里是“应用程序”包，我想从中获取价值。

package application; 

import javafx.collections.FXCollections; 

import javafx.collections.ObservableList; 
import javafx.event.ActionEvent; 
import javafx.fxml.FXML; 
import javafx.fxml.FXMLLoader; 
import javafx.scene.Parent; 
import javafx.scene.Scene; 
import javafx.scene.control.Button; 
import javafx.scene.control.ChoiceBox; 
import javafx.scene.control.ComboBox; 
import javafx.scene.control.Label; 
import javafx.scene.control.TextField; 
import javafx.stage.Stage; 

public class MainControll { 
ObservableList<String> Sugu = FXCollections.observableArrayList("Mees", "Naine"); 
ObservableList<String> Aktiivsus = FXCollections.observableArrayList("Puudulik", "Madal", "Keskmine", "Kõrge"); 
ObservableList<String> Goal = FXCollections.observableArrayList("Kaalu langetamine", "Kaalu säilitamine", 
     "Kaalu tõstmine"); 

@FXML 
private TextField txtPikkus; 

@FXML 
private TextField txtKaal; 

@FXML 
private TextField txtVanus; 

@FXML 
private ComboBox cbAktiivsus; 

@FXML 
private ComboBox cbSugu; 

@FXML 
private ComboBox cbValik; 

@FXML 
public static Label lblKcal; 


@FXML 
public Label lblValk; 

@FXML 
public Label lblSysi; 

@FXML 
public Label lblRasv; 

@FXML 
private Label lblVigaPikk; 

@FXML 
private Label lblVigaKaal; 

@FXML 
private Label lblVigaVanus; 

@FXML 
private Label lblVigaAktiivsus; 

@FXML 
private Label lblVigaSugu; 

@FXML 
private Label lblVigaGoal; 

@FXML 
private void initialize() { 
    cbSugu.setItems(Sugu); 
    cbAktiivsus.setItems(Aktiivsus); 
    cbValik.setItems(Goal); 

} 

public void arvutaNuppVajutus() { 
    double pikk = 0; 
    double kaal = 0; 
    double vanus = 0; 
    try { 
     pikk = Double.parseDouble(txtPikkus.getText()); 
    } catch (NumberFormatException e) { 
     lblVigaPikk.setText("Lisa pikkus numbrites!"); 
    } 
    try { 
     kaal = Double.parseDouble(txtKaal.getText()); 
    } catch (NumberFormatException e) { 
     lblVigaKaal.setText("Lisa kaal numbrites!"); 
    } 
    try { 
     vanus = Double.parseDouble(txtVanus.getText()); 
    } catch (NumberFormatException e) { 
     lblVigaVanus.setText("Lisa vanus numbrites!"); 
    } 
    double esikcal = 0; 
    double keskkcal = 0; 
    int loppkcal = 0; 
    int sysivesik; 

    try { 
     if (cbSugu.getSelectionModel().getSelectedItem().equals("Mees")) { 
      esikcal = 10 * kaal + 6.25 * pikk - 5 * vanus + 5; 

     } 
     if (cbSugu.getSelectionModel().getSelectedItem().equals("Naine")) { 
      esikcal = 10 * kaal + 6.25 * pikk - 5 * vanus - 161; 

     } 
    } catch (NullPointerException e) { 

     lblVigaSugu.setText("Unustasid soo lisamata!"); 
    } 

    try { 

     while (cbAktiivsus.getSelectionModel().getSelectedItem().equals("Puudulik")) { 
      keskkcal = 1.0 * esikcal; 
      break; 

     } 
     while (cbAktiivsus.getSelectionModel().getSelectedItem().equals("Madal")) { 
      keskkcal = 1.4 * esikcal; 
      break; 

     } 
     while (cbAktiivsus.getSelectionModel().getSelectedItem().equals("Keskmine")) { 
      keskkcal = 1.6 * esikcal; 
      break; 

     } 
     while (cbAktiivsus.getSelectionModel().getSelectedItem().equals("Kõrge")) { 
      keskkcal = 1.8 * esikcal; 
      break; 

     } 

    } catch (NullPointerException e) { 
     lblVigaAktiivsus.setText("Unustasid aktiivsuse valimata!"); 
    } 

    try { 
     if (cbValik.getSelectionModel().getSelectedItem().equals("Kaalu langetamine")) { 
      loppkcal = (int) (keskkcal - (keskkcal * 0.1)); 
     } 
     if (cbValik.getSelectionModel().getSelectedItem().equals("Kaalu säilitamine")) { 
      loppkcal = (int) keskkcal; 
     } 
     if (cbValik.getSelectionModel().getSelectedItem().equals("Kaalu tõstmine")) { 
      loppkcal = (int) (keskkcal + (keskkcal * 0.1)); 
     } 
    } catch (NullPointerException e) { 
     lblVigaGoal.setText("Vali eesmärk!"); 

    } 
    lblKcal.setText((Double.toString(loppkcal)) + " kcal"); //Wanna do the same as i have done here, in the "packet" package to lblCal. 
    lblValk.setText((Double.toString(kaal * 2)) + " g"); 
    lblRasv.setText((Double.toString(kaal)) + " g"); 
    sysivesik = (int) (loppkcal - (kaal * 8) - (kaal * 9))/4; 
    lblSysi.setText((Double.toString(sysivesik)) + " g"); 
} 

public void pressButton(ActionEvent event) throws Exception { 
    try { 
     FXMLLoader fxmlLoader = new FXMLLoader(); 
     Parent root1 = (Parent) fxmlLoader.load(getClass().getResource("/packet/PaevikInterface.fxml")); 
     Stage stage = new Stage(); 
     stage.setScene(new Scene(root1)); 
     stage.show(); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 

} 
}

而且，这里是FXML代码，如果这些是任何帮助。

在 “应用程序” 包

<?import javafx.scene.control.Button?> 
<?import javafx.scene.control.ComboBox?> 
<?import javafx.scene.control.Label?> 
<?import javafx.scene.control.TextField?> 
<?import javafx.scene.layout.AnchorPane?> 
<?import javafx.scene.text.Font?> 

<AnchorPane prefHeight="600.0" prefWidth="400.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainControll"> 
    <children> 
     <Button fx:id="btnArvuta" layoutX="305.0" layoutY="281.0" mnemonicParsing="false" onAction="#arvutaNuppVajutus" text="Arvuta" textFill="#0a0a0a"> 
     <font> 
      <Font size="18.0" /> 
     </font> 
     </Button> 
     <TextField fx:id="txtPikkus" layoutX="25.0" layoutY="36.0" promptText="Sisesta pikkus"> 
     <font> 
      <Font size="18.0" /> 
     </font> 
     </TextField> 
     <TextField fx:id="txtKaal" layoutX="25.0" layoutY="92.0" promptText="Sisesta kaal"> 
     <font> 
      <Font size="18.0" /> 
     </font> 
     </TextField> 
     <Label layoutX="35.0" layoutY="1.0" text="Arvuta päevane kaloraazh"> 
     <font> 
      <Font size="18.0" /> 
     </font> 
     </Label> 
     <ComboBox fx:id="cbValik" layoutX="23.0" layoutY="283.0" prefWidth="150.0" promptText="Eesmärk" /> 
     <Label layoutX="27.0" layoutY="325.0" text="Päevane soovituslik kcal ja makrotoitained on:"> 
     <font> 
      <Font size="18.0" /> 
     </font> 
     </Label> 
     <Label layoutX="27.0" layoutY="352.0" text="Kcal:"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label layoutX="27.0" layoutY="377.0" text="Valgud:"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label layoutX="27.0" layoutY="403.0" text="Süsivesikud:"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label layoutX="27.0" layoutY="427.0" text="Rasvad:"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblKcal" layoutX="137.0" layoutY="355.0" text="0 kcal"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblValk" layoutX="137.0" layoutY="377.0" text="0 g"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblSysi" layoutX="137.0" layoutY="403.0" text="0 g"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblRasv" layoutX="137.0" layoutY="427.0" text="0 g"> 
     <font> 
      <Font size="19.0" /> 
     </font> 
     </Label> 
     <ComboBox fx:id="cbAktiivsus" layoutX="23.0" layoutY="192.0" prefWidth="150.0" promptText="Vali aktiivsus" /> 
     <ComboBox fx:id="cbSugu" layoutX="23.0" layoutY="236.0" prefWidth="150.0" promptText="Sugu" /> 
     <Button fx:id="btnPaevik" layoutX="23.0" layoutY="489.0" mnemonicParsing="false" onAction="#pressButton" prefHeight="56.0" prefWidth="162.0" text="Toitumispäevik"> 
     <font> 
      <Font size="20.0" /> 
     </font> 
     </Button> 
     <TextField fx:id="txtVanus" layoutX="27.0" layoutY="142.0" prefHeight="37.0" prefWidth="64.0" promptText="Vanus"> 
     <font> 
      <Font size="16.0" /> 
     </font> 
     </TextField> 
     <Label fx:id="lblVigaPikk" layoutX="254.0" layoutY="37.0" prefHeight="37.0" prefWidth="142.0" text="-&#10;&#10;" textFill="RED" /> 
     <Label fx:id="lblVigaKaal" layoutX="254.0" layoutY="93.0" prefHeight="37.0" prefWidth="142.0" text="-&#10;&#10;" textFill="RED" /> 
     <Label fx:id="lblVigaVanus" layoutX="102.0" layoutY="142.0" prefHeight="37.0" prefWidth="217.0" text="-&#10;&#10;" textFill="RED" /> 
     <Label fx:id="lblVigaAktiivsus" layoutX="185.0" layoutY="186.0" prefHeight="37.0" prefWidth="205.0" text="-&#10;&#10;" textFill="RED" /> 
     <Label fx:id="lblVigaSugu" layoutX="183.0" layoutY="233.0" prefHeight="37.0" prefWidth="205.0" text="-&#10;&#10;" textFill="RED" /> 
     <Label fx:id="lblVigaGoal" layoutX="183.0" layoutY="277.0" prefHeight="37.0" prefWidth="120.0" text="-&#10;&#10;" textFill="RED" /> 
    </children> 
</AnchorPane>

，并在 “数据包” 的FXML码这就是包

<?xml version="1.0" encoding="UTF-8"?> 

<?import javafx.scene.control.Button?> 
<?import javafx.scene.control.ComboBox?> 
<?import javafx.scene.control.Label?> 
<?import javafx.scene.control.TableColumn?> 
<?import javafx.scene.control.TableView?> 
<?import javafx.scene.control.TextField?> 
<?import javafx.scene.layout.AnchorPane?> 
<?import javafx.scene.layout.HBox?> 
<?import javafx.scene.text.Font?> 

<AnchorPane prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.60" xmlns:fx="http://javafx.com/fxml/1"> 
    <children> 
     <HBox fx:id="hboxKAst" layoutX="38.0" layoutY="37.0" prefHeight="100.0" prefWidth="547.0"> 
     <children> 
      <TextField fx:id="lisaToit" prefHeight="25.0" prefWidth="192.0" promptText="Toiduaine" /> 
      <TextField fx:id="lisaValk" prefHeight="25.0" prefWidth="56.0" promptText="Valgud" /> 
      <TextField fx:id="lisaSysi" prefHeight="25.0" prefWidth="90.0" promptText="Süsivesikud" /> 
      <TextField fx:id="lisaRasv" prefHeight="25.0" prefWidth="54.0" promptText="Rasvad" /> 
      <Button fx:id="lisaNupp" mnemonicParsing="false" prefHeight="25.0" prefWidth="131.0" text="Lisa andmebaasi" /> 
     </children> 
     </HBox> 
     <ComboBox fx:id="cbToiduaine" layoutX="38.0" layoutY="169.0" prefWidth="150.0" promptText="Vali toiduaine" /> 
     <TextField fx:id="txtKogus" layoutX="204.0" layoutY="169.0" prefHeight="25.0" prefWidth="112.0" promptText="Kogus grammides" /> 
     <TableView fx:id="tbTabel" layoutX="38.0" layoutY="227.0" prefHeight="333.0" prefWidth="555.0"> 
     <columns> 
      <TableColumn fx:id="tbToit" prefWidth="188.0" text="Toiduaine nimetus" /> 
      <TableColumn fx:id="tbValk" prefWidth="85.0" text="Valgud" /> 
      <TableColumn fx:id="tbSysi" prefWidth="81.0" text="Süsivesikud" /> 
      <TableColumn fx:id="tbRasv" prefWidth="92.0" text="Rasvad" /> 
      <TableColumn fx:id="tbKcal" prefWidth="104.0" text="Kalorid" /> 
     </columns> 
     </TableView> 
     <Button fx:id="lisaMenyy" layoutX="339.0" layoutY="169.0" mnemonicParsing="false" text="Lisa menüüsse" /> 
     <Button layoutX="636.0" layoutY="37.0" mnemonicParsing="false" prefHeight="25.0" prefWidth="150.0" text="Toiduainete andmebaas" /> 
     <Label layoutX="608.0" layoutY="238.0" prefHeight="45.0" prefWidth="176.0" text="Sinule vajalik kogus kaloreid&#10; ja makrotoitaineid:&#10;"> 
     <font> 
      <Font size="15.0" /> 
     </font> 
     </Label> 
     <Label layoutX="608.0" layoutY="292.0" text="Kcal:"> 
     <font> 
      <Font size="15.0" /> 
     </font> 
     </Label> 
     <Label layoutX="608.0" layoutY="324.0" text="Valgud:"> 
     <font> 
      <Font size="15.0" /> 
     </font> 
     </Label> 
     <Label layoutX="608.0" layoutY="352.0" text="Süsivesikud:"> 
     <font> 
      <Font size="15.0" /> 
     </font> 
     </Label> 
     <Label layoutX="608.0" layoutY="385.0" text="Rasvad:"> 
     <font> 
      <Font size="15.0" /> 
     </font> 
     </Label> 
     <Label fx:id="lblCal" layoutX="658.0" layoutY="294.0" text="0 kcal" /> 
     <Label fx:id="lblProt" layoutX="672.0" layoutY="326.0" text="0 g" /> 
     <Label fx:id="lblCarb" layoutX="697.0" layoutY="354.0" text="0 g" /> 
     <Label fx:id="lblFat" layoutX="672.0" layoutY="387.0" text="0 g" /> 
    </children> 
</AnchorPane>

来源

2016-11-22 kiq

的FXML码这是你可以改变这一点：

lblCal.setText(nr.arvutaNuppVajutus.loppkcal); //Want same value for this as lblKcal or loppkcal has in "application" package.

到

lblCal.setText(nr.arvutaNuppVajutu());

和更改arvutaNuppVajutu（）来

public string arvutaNuppVajutu() { 
    .. 

    return "" + lblKcal; 
}

来源

2016-11-22 18:51:26 mWhitley

从另一个包中获取值

回答

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