我在FXML文檔中使用id爲matrix的GridPane。我想爲矩陣中的每個單元添加標籤。 這裏是我的控制器:在JavaFX中向GridPane添加標籤時遇到問題
package application.view;
import java.awt.Button;
import java.awt.Insets;
import java.awt.Label;
import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.layout.GridPane;
public class viewController {
@FXML
private GridPane matrix;
private Label[][] label = new Label[10][10];
public viewController() {
}
@FXML
private void initialize() {
}
@FXML
private void setMatrix() {
for (int i = 0; i < label.length; i++) {
for (int j = 0; j < label[i].length; j++) {
label[i][j].setText("1");
matrix.add(label[i][j], i, j);
}
}
}
}
這裏是我的FXML文件:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.effect.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="400.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.view.viewController">
<children>
<SplitPane dividerPositions="0.8467336683417085" orientation="VERTICAL" prefHeight="200.0" prefWidth="160.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<items>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
<children>
<GridPane fx:id="matrix" alignment="CENTER" disable="true" gridLinesVisible="true" layoutX="73.0" layoutY="125.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<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>
<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>
</GridPane>
</children>
</AnchorPane>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="100.0" prefWidth="160.0">
<children>
<HBox alignment="CENTER" prefHeight="65.0" prefWidth="200.0" spacing="10.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<Button fx:id="refresh" mnemonicParsing="false" text="Refresh" />
<Button fx:id="findBlock" mnemonicParsing="false" text="Find Largest Block" />
</children>
</HBox>
</children>
</AnchorPane>
</items>
</SplitPane>
</children>
</AnchorPane>
正如你可以看到我拿到ID矩陣的GridPane。在那裏我想在每個單元格中添加一個標籤。該標籤顯然會有一個數字。唯一給我錯誤的是matrix.add()
。它說不能轉換爲節點。請幫忙。謝謝!
非常感謝!我一直在試圖弄清楚這兩個小時的情況,而且這一點很容易解決。哇。我想這是學習過程。 – Nazariy1995 2014-10-12 14:43:20
這是一個不幸的決定,AWT和JavaFX共享許多控件名稱,就像Label的情況一樣。但是,當代碼甚至沒有編譯時,檢查導入的類型是一種很好的做法。更好的辦法是在IDE中設置排除自動導入的完整路徑(如java.awt。* path here)。 Eclipse和IntelliJ IDEA都支持該選項。 – user645859 2014-10-12 15:04:17