java - 在 javafx 中的 gridpane 中的 Pane 上放置标签

标签 java javafx gridpane

我想以编程方式将标签放入我的 Pane 中。我有一个 11x12 的网格 Pane 。这些字段位于外部字段中。 我需要实现的是将我的 MonopolyConstants.FIELD_NAMES[I] 添加到必须位于 Pane 中的标签中。

到目前为止,我的代码如下所示:

package gui;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
import javafx.scene.layout.GridPane;
import monopoly_import.MonopolyConstants;

/**
* FXML Controller class
*
* @author nj
*/

public class GUIController implements Initializable {

@FXML private GridPane grindPane;
@FXML private Label field0;

/**
 * Initializes the controller class.
 *
 * @param url
 */
@Override
public void initialize(URL url, ResourceBundle rb) {
    GridPane gridPane = new GridPane();
    gridPane.add(new Label("Item listing"), 0, 0);

    for (int i = 0; i < 1; i++) {
        Label field0 = new Label(MonopolyConstants.FIELD_NAMES[i]);
        gridPane.add(field0, i + 1, 0);
    }
}

}

这是 FXML。

    <GridPane fx:id="grindPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="900.0" style="-fx-background-color: #E04134; -fx-background-repeat: stretch; -fx-background-position: center center;" xmlns="http://javafx.com/javafx/9" xmlns:fx="http://javafx.com/fxml/1" fx:controller="gui.GUIController">
  <columnConstraints>
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
    <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
      <ColumnConstraints />
  </columnConstraints>
  <rowConstraints>
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
      <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
  </rowConstraints>
   <children>
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;">
         <children>
            <Label fx:id="field0" layoutX="24.0" layoutY="17.0" text="START" />
         </children></Pane>
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="1" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="2" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="3" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="4" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="5" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="6" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="7" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="8" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="1" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" GridPane.rowIndex="2" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="3" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" GridPane.rowIndex="4" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="5" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" GridPane.rowIndex="6" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="7" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" GridPane.rowIndex="8" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="9" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="9" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="8" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="7" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="6" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="5" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="4" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="3" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="2" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.columnIndex="1" GridPane.rowIndex="11" />
      <Pane prefHeight="33.0" prefWidth="60.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="11" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="9" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.rowIndex="8" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="7" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.rowIndex="6" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="5" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.rowIndex="4" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="3" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.rowIndex="2" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.rowIndex="1" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: f1f1f1;" GridPane.columnIndex="9" GridPane.rowIndex="10" />
      <Pane prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: white;" GridPane.rowIndex="10" />
      <ImageView fitHeight="161.0" fitWidth="400.0" pickOnBounds="true" preserveRatio="true" GridPane.columnIndex="1" GridPane.columnSpan="8" GridPane.halignment="CENTER" GridPane.rowIndex="1" GridPane.rowSpan="10" GridPane.valignment="CENTER">
         <image>
            <Image url="@../MonopolyLogo.png" />
         </image>
      </ImageView>
   </children>
</GridPane>

在这里您可以看到它在场景构建器中的外观。 Monopoly game

最佳答案

好的,首先,如果您在 Controller 中使用initialize,则不需要实例化小部件。只需通过 @FXML 使用它们,或者使用 public 使小部件可访问。如果使用正确的 fx:id 设置这些小部件,FXMLLoader 将进行实例化。因此,这个 GridPane gridPane = new GridPane(); 将不再是必要的。

第二个技巧是,以样式表的形式利用 JavaFX 样式概率,并避免使用内联样式使 FXML 文件膨胀。我更喜欢为布局的根容器提供样式表引用,例如 stylesheets="@../style.css"。然后,您可以为所需的小部件提供适当的 styleClass 属性。

对于您的问题:有多种可能性可以解决此问题。

  • 首先,您可以向 FXML 内 GridPane 的每个单元格添加一个标签。 恕我直言,您不需要为每个单元格设置单独的 Pane ,特别是因为您可以使用所需的背景颜色、宽度和高度定义标签。这样做的缺点是,您无法直接使用常量。相反,您可以使用 ResourceBundle 直接在 FXML 中访问其字符串。

要从 ResourceBundle 添加标签所需的样式和文本,请执行以下操作:

<GridPane ...>
    ...
    <children>
        <Label styleClass="label-even" text="%00"/>
        <Label styleClass="label-odd" text="%01" GridPane.columnIndex="1"/>
        <Label styleClass="label-even" text="%10" GridPane.rowIndex="1"/>
    </children>
</GridPane>

为了使捆绑文件(最好命名为strings_en.properties)工作,您需要 FXMLLoader 来告诉他在哪里可以找到它。这是在加载 FXML 文件时完成的,例如:

final FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("sample.fxml"),
            ResourceBundle.getBundle("strings", Locale.getDefault()));

bundle 可能需要这样的字符串(适合我的示例):

00=START
01=Label of first row and second column
...
10=Label of second column and first row
...
  • 其次,您可以通过编程方式添加这些内容,就像您已经尝试过的那样。在这里您可以使用常量 MonopolyConstants.FIELD_NAMES

为了您的方便,您可以在以下内容上进行构建:

public class GUIController implements Initializable {
    @FXML 
    private GridPane gridPane;

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        gridPane.add(new Label(MonopolyConstants.FIELD_NAMES[0]), 0, 0);
        gridPane.add(new Label(MonopolyConstants.FIELD_NAMES[1]), 1, 0);
        gridPane.add(new Label(MonopolyConstants.FIELD_NAMES[2]), 2, 0);
        ...
        gridPane.add(new Label(MonopolyConstants.FIELD_NAMES[39]), 11, 11);
    }
}

我确信,有一种巧妙的方法可以更动态地执行此操作,但我没有那么多的空闲时间;)

关于java - 在 javafx 中的 gridpane 中的 Pane 上放置标签,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47189224/

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