JavaFX GridPane - 配置控件以增长和占用所有可用空间

Question

努力实现：

1. Text Field 1和Text Field 3应占用所有可用空间
2. Button 1和Button 2应具有相同的宽度

问题：

Text Field 1和Text Field 3并未占用所有可用空间（虽然Label完全显示后它们正在增长）

以下是截图：



// Removed imports for brevity

public class GridPaneTest extends Application
{
  @Override
  public void start(Stage primaryStage)
  {
    primaryStage.setTitle("GridPane Test");

    GridPane gridPane = new GridPane();
    // gridPane.setGridLinesVisible(true);
    gridPane.setHgap(5);
    gridPane.setVgap(5);
    gridPane.setPadding(new Insets(5));

    TextField tf1 = new TextField("Text Field 1");
    GridPane.setHgrow(tf1, Priority.ALWAYS);
    gridPane.add(tf1, 0, 0);
    TextField tf2 = new TextField("Text Field 2");
    GridPane.setHgrow(tf2, Priority.NEVER);
    gridPane.add(tf2, 1, 0);
    Button button1 = new Button("Button 1");
    button1.setMaxWidth(140);
    GridPane.setHgrow(button1, Priority.NEVER);
    GridPane.setHalignment(button1, HPos.RIGHT);
    gridPane.add(button1, 2, 0);

    TextField tf3 = new TextField("Text Field 3");
    GridPane.setHgrow(tf3, Priority.ALWAYS);
    gridPane.add(tf3, 0, 1, 2, 1);
    Button button2 = new Button("Button 2 Button 2");
    button2.setMaxWidth(140);
    GridPane.setHgrow(button2, Priority.NEVER);
    GridPane.setHalignment(button2, HPos.RIGHT);
    gridPane.add(button2, 2, 1);

    Label label1 = new Label(
        "Label 1 Label 1 Label 1 Label 1 Label 1 Label 1 Label 1 Label 1 Label 1 Label 1 Label 1");
    GridPane.setHgrow(label1, Priority.ALWAYS);
    gridPane.add(label1, 0, 2, 3, 1);

    primaryStage.setScene(new Scene(gridPane)); 

    primaryStage.show();
  }

  public static void main(String[] args)
  {
    launch(args);
  }
}

Answer 1

根据GridPane documentation

  

如果应用程序需要显式控制行或列的大小，可以通过添加RowConstraints和ColumnConstraints对象来指定这些指标

gridPane.getColumnConstraints()
  .addAll(new ColumnConstraints(), new ColumnConstraints(),
    new ColumnConstraints(140) /* Control the third column size */);

屏幕截图：