javafx的GridPane怎么设置2*2
时间: 2024-04-29 20:21:16 浏览: 8
在JavaFX中,可以使用GridPane来创建网格布局。要创建2×2的GridPane,可以按照以下步骤进行操作:
1. 创建一个GridPane对象。
```java
GridPane gridPane = new GridPane();
```
2. 使用add()方法向GridPane中添加四个节点。
```java
gridPane.add(node1, 0, 0);
gridPane.add(node2, 1, 0);
gridPane.add(node3, 0, 1);
gridPane.add(node4, 1, 1);
```
其中,node1、node2、node3和node4是要添加的四个节点,第一个参数是节点对象,第二个参数是列数,第三个参数是行数。
3. 设置节点的列宽和行高。
```java
ColumnConstraints col1 = new ColumnConstraints();
col1.setPercentWidth(50);
ColumnConstraints col2 = new ColumnConstraints();
col2.setPercentWidth(50);
gridPane.getColumnConstraints().addAll(col1, col2);
RowConstraints row1 = new RowConstraints();
row1.setPercentHeight(50);
RowConstraints row2 = new RowConstraints();
row2.setPercentHeight(50);
gridPane.getRowConstraints().addAll(row1, row2);
```
以上代码将网格布局分为两列和两行,每个节点占用50%的宽度和高度。
完整代码示例:
```java
GridPane gridPane = new GridPane();
// 创建四个节点
Node node1 = new Node();
Node node2 = new Node();
Node node3 = new Node();
Node node4 = new Node();
// 添加节点到GridPane
gridPane.add(node1, 0, 0);
gridPane.add(node2, 1, 0);
gridPane.add(node3, 0, 1);
gridPane.add(node4, 1, 1);
// 设置列宽和行高
ColumnConstraints col1 = new ColumnConstraints();
col1.setPercentWidth(50);
ColumnConstraints col2 = new ColumnConstraints();
col2.setPercentWidth(50);
gridPane.getColumnConstraints().addAll(col1, col2);
RowConstraints row1 = new RowConstraints();
row1.setPercentHeight(50);
RowConstraints row2 = new RowConstraints();
row2.setPercentHeight(50);
gridPane.getRowConstraints().addAll(row1, row2);
```