我在GridPane中包含ScrollPane，以便在将新行添加到网格时滚动它。
<BorderPane fx:id="SubmitStageBorderPane"
stylesheets="@../SubmitStageStyles.css"
xmlns="http://javafx.com/javafx/8.0.112-ea"
xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.SubmitStage">
<center>
<AnchorPane fx:id="SubmitStageAnchorPane">
<children>
<ScrollPane fx:id="GridscPane" hbarPolicy="NEVER" vbarPolicy="ALWAYS">
<content>
<GridPane fx:id="submitLayout" maxHeight="1080.0" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="500.0" prefWidth="700.0" stylesheets="@../SubmitStageStyles.css">
<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>
<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>
<children>
<TextField fx:id="course1" promptText="Course name" GridPane.rowIndex="1">
<opaqueInsets>
<Insets />
</opaqueInsets>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="course2" promptText="Cource name" GridPane.rowIndex="2">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="course3" promptText="Course name" GridPane.rowIndex="3">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="course4" promptText="Course name" GridPane.rowIndex="4">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Grade:" GridPane.columnIndex="1" GridPane.rowIndex="1">
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Grade:" GridPane.columnIndex="1" GridPane.rowIndex="2">
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Grade:" GridPane.columnIndex="1" GridPane.rowIndex="3">
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Grade:" GridPane.columnIndex="1" GridPane.rowIndex="4">
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
</Label>
<TextField fx:id="grade1" promptText="Enter the grade" GridPane.columnIndex="2" GridPane.rowIndex="1">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="grade2" promptText="Enter the grade" GridPane.columnIndex="2" GridPane.rowIndex="2">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="grade3" promptText="Enter the grade" GridPane.columnIndex="2" GridPane.rowIndex="3">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="grade4" promptText="Enter the grade" GridPane.columnIndex="2" GridPane.rowIndex="4">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Credits:" GridPane.columnIndex="3" GridPane.rowIndex="1">
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Credits:" GridPane.columnIndex="3" GridPane.rowIndex="2">
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Credits:" GridPane.columnIndex="3" GridPane.rowIndex="3">
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
</Label>
<Label alignment="CENTER_RIGHT" contentDisplay="CENTER" text="Credits:" GridPane.columnIndex="3" GridPane.rowIndex="4">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="10.0" right="15.0" top="10.0" />
</padding>
<font>
<Font name="Eras Demi ITC" size="21.0" />
</font>
</Label>
<TextField fx:id="credit1" promptText="Course credit" GridPane.columnIndex="4" GridPane.rowIndex="1">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="credit2" promptText="Course credit" GridPane.columnIndex="4" GridPane.rowIndex="2">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="credit3" promptText="Course credit" GridPane.columnIndex="4" GridPane.rowIndex="3">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
<TextField fx:id="credit4" promptText="Course credit" GridPane.columnIndex="4" GridPane.rowIndex="4">
<GridPane.margin>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</GridPane.margin>
</TextField>
</children>
<opaqueInsets>
<Insets />
</opaqueInsets>
<padding>
<Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
</padding>
</GridPane>
</content>
</ScrollPane>
<Button fx:id="AddAnotherCourseButton" alignment="BOTTOM_CENTER" mnemonicParsing="false" onAction="#AddAnotherCourseClicked" text="ADD ANOTHER COURSE">
<font>
<Font name="Book Antiqua Bold" size="15.0" />
</font>
</Button>
</children>
</AnchorPane>
</center>
<top>
<MenuBar fx:id="SubmitStageMenuBar" BorderPane.alignment="CENTER">
<menus>
<Menu mnemonicParsing="false" text="File">
<items>
<MenuItem mnemonicParsing="false" text="Save" />
<MenuItem mnemonicParsing="false" text="Load" />
<SeparatorMenuItem mnemonicParsing="false" />
<MenuItem mnemonicParsing="false" text="Exit" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="About">
<items>
<MenuItem mnemonicParsing="false" text="Action 1" />
</items>
</Menu>
</menus>
</MenuBar>
</top>
</BorderPane>
我有一个按钮，只要点击它，就会在GridPane添加一行元素。
public void AddAnotherCourseClicked(){
int rowCount = returnMaxRow();
TextField courseName = new TextField();
courseName.setPromptText("Course name");
submitLayout.setMargin(courseName, new Insets(5, 5, 5, 5));
Label gradeLabel = new Label("Grade:");
gradeLabel.setFont(Font.font("Eras Demi ITC", 21));
submitLayout.setMargin(gradeLabel, new Insets(5, 5, 5, 5));
gradeLabel.setPadding(new Insets(10, 10, 15, 10));
TextField gradeReceived = new TextField();
gradeReceived.setPromptText("Enter the grade");
submitLayout.setMargin(gradeReceived, new Insets(5, 5, 5, 5));
Label creditsLabel = new Label("Credits:");
creditsLabel.setFont(Font.font("Eras Demi ITC", 21));
submitLayout.setMargin(gradeLabel, new Insets(5, 5, 5, 5));
creditsLabel.setPadding(new Insets(10, 10, 15, 10));
TextField courseCredit = new TextField();
courseCredit.setPromptText("Course credit");
submitLayout.setMargin(courseCredit, new Insets(5, 5, 5, 5));
submitLayout.addRow(rowCount+1, courseName, gradeLabel, gradeReceived, creditsLabel, courseCredit);
}
private int returnMaxRow(){
int rowNum, lastRow = 0;
for(Node element : submitLayout.getChildren()){
rowNum = submitLayout.getRowIndex(element);
lastRow = (rowNum > lastRow ? rowNum : lastRow);
}
return lastRow;
}
到目前为止，添加了ScrollBar，但是当我按下按钮时，行只是聚集在一起，而ScrollBar没有延伸，它的高度保持不变。
答案 0 :(得分：0)
我也遇到了同样的问题..到处都是...最后有一种解决方法。
只需不使用场景构建器添加网格窗格即可，只需使用场景构建器创建滚动窗格，然后使用代码动态添加网格窗格即可，如下所示
// create new constraints for columns and set their percentage
ColumnConstraints columnConstraints = new ColumnConstraints();
columnConstraints.setHgrow(Priority.NEVER);
columnConstraints.setPercentWidth(100.00);
// create new constraints for row and set their percentage
RowConstraints rowConstraints = new RowConstraints();
rowConstraints.setVgrow(Priority.NEVER);
columnConstraints.setPercentWidth(100.0);
// don't set preferred size or anything on gridpane
GridPane gridPane = new GridPane();
gridPane.getRowConstraints().add(rowConstraints);
gridPane.getColumnConstraints().add(columnConstraints);
// suppose your scroll pane id is scrollPane
scrollPane.setContent(gridPane);
最后，在场景构建器中，请记住在滚动窗格上勾选FitHeight和FitWidth，以便在移动网格时添加网格以适应滚动窗格的大小